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{"parentUuid":"6b9850c7-c303-49c2-a508-e5daf52cea48","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01TayGAmkwMQsmji1pHZwrpu","type":"tool_result","content":"     1→#!/bin/bash\n     2→# Build Arch Linux kernel for s390x using PKGBUILD system\n     3→\n     4→set -e\n     5→\n     6→# Configuration\n     7→SCRIPT_DIR=\"$(cd \"$(dirname \"${BASH_SOURCE[0]}\")\" && pwd)\"\n     8→PROJECT_ROOT=\"$(dirname \"$SCRIPT_DIR\")\"\n     9→ARCH_KERNEL_DIR=\"$PROJECT_ROOT/arch-kernel\"\n    10→BUILD_DIR=\"$PROJECT_ROOT/build-kernel\"\n    11→OUTPUT_DIR=\"$PROJECT_ROOT/output\"\n    12→\n    13→# Colors for output\n    14→GREEN='\\033[0;32m'\n    15→YELLOW='\\033[1;33m'\n    16→RED='\\033[0;31m'\n    17→NC='\\033[0m'\n    18→\n    19→echo -e \"${GREEN}=== Building Arch Linux kernel for s390x ===${NC}\"\n    20→\n    21→# Create directories\n    22→mkdir -p \"$BUILD_DIR\" \"$OUTPUT_DIR\"\n    23→\n    24→# Check if we have the PKGBUILD\n    25→if [ ! -f \"$ARCH_KERNEL_DIR/PKGBUILD-s390x\" ]; then\n    26→    echo -e \"${RED}Error: PKGBUILD-s390x not found!${NC}\"\n    27→    echo \"Please run from the project root directory\"\n    28→    exit 1\n    29→fi\n    30→\n    31→# Create build environment inside container\n    32→cat > \"$BUILD_DIR/build-arch-kernel-container.sh\" << 'EOF'\n    33→#!/bin/bash\n    34→set -e\n    35→\n    36→# Setup colors\n    37→GREEN='\\033[0;32m'\n    38→YELLOW='\\033[1;33m'\n    39→RED='\\033[0;31m'\n    40→NC='\\033[0m'\n    41→\n    42→# Install required build dependencies\n    43→echo -e \"${YELLOW}Installing build dependencies...${NC}\"\n    44→dnf install -y \\\n    45→    bc \\\n    46→    bison \\\n    47→    cpio \\\n    48→    flex \\\n    49→    gettext \\\n    50→    elfutils-libelf-devel \\\n    51→    openssl-devel \\\n    52→    perl \\\n    53→    python3 \\\n    54→    rsync \\\n    55→    tar \\\n    56→    xz \\\n    57→    zstd \\\n    58→    gcc-s390x-linux-gnu \\\n    59→    binutils-s390x-linux-gnu \\\n    60→    wget \\\n    61→    patch \\\n    62→    diffutils \\\n    63→    make || {\n    64→    echo -e \"${RED}Failed to install dependencies${NC}\"\n    65→    exit 1\n    66→}\n    67→\n    68→# Setup build directory\n    69→cd /work/arch-kernel\n    70→BUILD_DIR=\"/tmp/makepkg\"\n    71→mkdir -p \"$BUILD_DIR\"\n    72→\n    73→# Copy PKGBUILD and config\n    74→cp PKGBUILD-s390x \"$BUILD_DIR/PKGBUILD\"\n    75→cp config-s390x \"$BUILD_DIR/\"\n    76→\n    77→cd \"$BUILD_DIR\"\n    78→\n    79→# Download sources\n    80→echo -e \"${YELLOW}Downloading kernel sources...${NC}\"\n    81→KERNEL_VERSION=\"6.18.6\"\n    82→ARCH_TAG=\"v${KERNEL_VERSION}-arch1\"            # v6.18.6-arch1\n    83→\n    84→KERNEL_URL=\"https://cdn.kernel.org/pub/linux/kernel/v${KERNEL_VERSION%%.*}.x/linux-${KERNEL_VERSION}.tar.xz\"\n    85→ARCH_PATCH_URL=\"https://github.com/archlinux/linux/releases/download/${ARCH_TAG}/linux-${ARCH_TAG}.patch.zst\"\n    86→\n    87→if [ ! -f \"linux-${KERNEL_VERSION}.tar.xz\" ]; then\n    88→    wget --no-verbose --show-progress \"$KERNEL_URL\" || {\n    89→        echo -e \"${RED}Failed to download kernel${NC}\"\n    90→        exit 1\n    91→    }\n    92→fi\n    93→\n    94→if [ ! -f \"linux-${ARCH_TAG}.patch.zst\" ]; then\n    95→    echo -e \"${YELLOW}Downloading Arch Linux patches (${ARCH_TAG})...${NC}\"\n    96→    wget --no-verbose --show-progress \"$ARCH_PATCH_URL\" || {\n    97→        echo -e \"${RED}Failed to download Arch patches${NC}\"\n    98→        exit 1\n    99→    }\n   100→fi\n   101→\n   102→# Extract and prepare sources\n   103→echo -e \"${YELLOW}Extracting kernel source...${NC}\"\n   104→if [ ! -d \"linux-${KERNEL_VERSION}\" ]; then\n   105→    tar -xf \"linux-${KERNEL_VERSION}.tar.xz\"\n   106→fi\n   107→\n   108→# Setup cross-compilation environment\n   109→export ARCH=s390\n   110→export CROSS_COMPILE=s390x-linux-gnu-\n   111→\n   112→# Enter kernel directory\n   113→cd \"linux-${KERNEL_VERSION}\"\n   114→\n   115→# Apply Arch Linux patches\n   116→echo -e \"${YELLOW}Applying Arch Linux patches...${NC}\"\n   117→zstd -d --stdout \"../linux-${ARCH_TAG}.patch.zst\" | patch -Np1 || {\n   118→    echo -e \"${RED}Failed to apply Arch patches${NC}\"\n   119→    exit 1\n   120→}\n   121→\n   122→# Set Arch localversion\n   123→echo \"-1\" > localversion.10-pkgrel\n   124→echo \"-s390x\" > localversion.20-pkgname\n   125→\n   126→# Apply s390x config\n   127→echo -e \"${YELLOW}Configuring kernel for s390x...${NC}\"\n   128→cp ../config-s390x .config\n   129→make olddefconfig\n   130→\n   131→# Show kernel version\n   132→echo -e \"${GREEN}Building kernel version: $(make -s kernelrelease)${NC}\"\n   133→\n   134→# Build kernel\n   135→echo -e \"${YELLOW}Building kernel (this will take a while)...${NC}\"\n   136→make -j$(nproc) bzImage || {\n   137→    echo -e \"${RED}Kernel build failed${NC}\"\n   138→    exit 1\n   139→}\n   140→\n   141→# Build modules (optional, can be slow)\n   142→echo -e \"${YELLOW}Building kernel modules...${NC}\"\n   143→make -j$(nproc) modules || {\n   144→    echo -e \"${YELLOW}Warning: Module build failed, continuing without modules${NC}\"\n   145→}\n   146→\n   147→# Copy kernel image\n   148→echo -e \"${YELLOW}Copying output files...${NC}\"\n   149→cp -v arch/s390/boot/bzImage \"/work/output/vmlinuz-${KERNEL_VERSION}-s390x-arch\"\n   150→cp -v System.map \"/work/output/System.map-${KERNEL_VERSION}-s390x-arch\"\n   151→cp -v .config \"/work/output/config-${KERNEL_VERSION}-s390x-arch\"\n   152→\n   153→# Create kernel info file\n   154→cat > /work/output/kernel-info-arch.txt << EOFINFO\n   155→Kernel Version: ${KERNEL_VERSION}-s390x-arch\n   156→Architecture: s390x\n   157→Build Date: $(date)\n   158→Build Method: Arch Linux kernel configuration for s390x\n   159→Kernel Config: Based on Arch Linux defaults + s390x hardware support\n   160→EOFINFO\n   161→\n   162→echo -e \"${GREEN}OK: Arch Linux kernel build complete!${NC}\"\n   163→EOF\n   164→\n   165→chmod +x \"$BUILD_DIR/build-arch-kernel-container.sh\"\n   166→\n   167→# Run the build in container\n   168→echo -e \"${YELLOW}Running build in container (requires sudo)...${NC}\"\n   169→sudo podman run --rm \\\n   170→    -v \"$PROJECT_ROOT:/work\" \\\n   171→    -w /work \\\n   172→    s390x-archlinux-dev \\\n   173→    /work/build-kernel/build-arch-kernel-container.sh\n   174→\n   175→echo -e \"${GREEN}OK: Arch Linux kernel for s390x built successfully!${NC}\"\n   176→echo -e \"${GREEN}Output files:${NC}\"\n   177→ls -la \"$OUTPUT_DIR/\"*-arch* 2>/dev/null || echo \"No Arch kernel files found yet\"\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"fee064bf-d981-4c8c-a342-bdeb38996742","timestamp":"2026-01-27T19:55:34.260Z","sourceToolAssistantUUID":"6b9850c7-c303-49c2-a508-e5daf52cea48"}
{"parentUuid":"02273a60-4031-419c-b04b-a4ed8ebce6eb","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Q9Q5b9BvKTzjsLXHy85z4V","type":"tool_result","content":"     1→# Maintainer: Jan Alexander Steffens (heftig) <heftig@archlinux.org>\n     2→# s390x Port Maintainer: Josephine Pfeiffer <josie@redhat.com>\n     3→\n     4→pkgbase=linux-s390x\n     5→pkgver=6.18.6\n     6→pkgrel=1\n     7→pkgdesc='Linux (s390x mainframe port)'\n     8→url='https://github.com/archlinux/linux'\n     9→arch=(x86_64)  # Build host architecture\n    10→_target_arch=s390x\n    11→license=(GPL-2.0-only)\n    12→makedepends=(\n    13→  bc\n    14→  cpio\n    15→  gettext\n    16→  libelf\n    17→  pahole\n    18→  perl\n    19→  python\n    20→  tar\n    21→  xz\n    22→  # Cross-compilation tools\n    23→  s390x-linux-gnu-gcc\n    24→  s390x-linux-gnu-binutils\n    25→)\n    26→options=(\n    27→  !debug\n    28→  !strip\n    29→)\n    30→_srcname=linux-${pkgver%.*}\n    31→_srctag=v${pkgver}-arch1\n    32→source=(\n    33→  https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/${_srcname}.tar.{xz,sign}\n    34→  $url/releases/download/$_srctag/linux-$_srctag.patch.zst{,.sig}\n    35→  config-s390x  # s390x specific kernel config\n    36→)\n    37→validpgpkeys=(\n    38→  ABAF11C65A2970B130ABE3C479BE3E4300411886  # Linus Torvalds\n    39→  647F28654894E3BD457199BE38DBBDC86092693E  # Greg Kroah-Hartman\n    40→  83BC8889351B5DEBBB68416EB8AC08600F108CDF  # Jan Alexander Steffens (heftig)\n    41→)\n    42→# Updated checksums will be needed after creating config-s390x\n    43→sha256sums=('SKIP'\n    44→            'SKIP'\n    45→            'SKIP'\n    46→            'SKIP'\n    47→            'SKIP')\n    48→\n    49→export KBUILD_BUILD_HOST=archlinux\n    50→export KBUILD_BUILD_USER=$pkgbase\n    51→export KBUILD_BUILD_TIMESTAMP=\"$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})\"\n    52→\n    53→# Cross-compilation environment\n    54→export ARCH=s390\n    55→export CROSS_COMPILE=s390x-linux-gnu-\n    56→\n    57→prepare() {\n    58→  cd $_srcname\n    59→\n    60→  echo \"Setting version...\"\n    61→  echo \"-$pkgrel\" > localversion.10-pkgrel\n    62→  echo \"${pkgbase#linux}\" > localversion.20-pkgname\n    63→\n    64→  local src\n    65→  for src in \"${source[@]}\"; do\n    66→    src=\"${src%%::*}\"\n    67→    src=\"${src##*/}\"\n    68→    src=\"${src%.zst}\"\n    69→    [[ $src = *.patch ]] || continue\n    70→    echo \"Applying patch $src...\"\n    71→    patch -Np1 < \"../$src\"\n    72→  done\n    73→\n    74→  echo \"Setting config for s390x...\"\n    75→  cp ../config-s390x .config\n    76→  make olddefconfig\n    77→  diff -u ../config-s390x .config || :\n    78→\n    79→  make -s kernelrelease > version\n    80→  echo \"Prepared $pkgbase version $(<version)\"\n    81→}\n    82→\n    83→build() {\n    84→  cd $_srcname\n    85→  \n    86→  # Build kernel for s390x\n    87→  make -j$(nproc) bzImage modules\n    88→  \n    89→  # Note: htmldocs and bpftool builds are skipped for cross-compilation\n    90→}\n    91→\n    92→_package() {\n    93→  pkgdesc=\"The $pkgdesc kernel and modules\"\n    94→  depends=(\n    95→    coreutils\n    96→    initramfs\n    97→    kmod\n    98→  )\n    99→  optdepends=(\n   100→    'linux-firmware: firmware images needed for some devices'\n   101→  )\n   102→  provides=(\n   103→    WIREGUARD-MODULE\n   104→  )\n   105→\n   106→  cd $_srcname\n   107→  local modulesdir=\"$pkgdir/usr/lib/modules/$(<version)\"\n   108→\n   109→  echo \"Installing boot image...\"\n   110→  # For s390x, the kernel image is arch/s390/boot/bzImage\n   111→  install -Dm644 \"arch/s390/boot/bzImage\" \"$modulesdir/vmlinuz\"\n   112→\n   113→  # Used by mkinitcpio to name the kernel\n   114→  echo \"$pkgbase\" | install -Dm644 /dev/stdin \"$modulesdir/pkgbase\"\n   115→\n   116→  echo \"Installing modules...\"\n   117→  ZSTD_CLEVEL=19 make INSTALL_MOD_PATH=\"$pkgdir/usr\" INSTALL_MOD_STRIP=1 \\\n   118→    DEPMOD=/doesnt/exist modules_install  # Suppress depmod\n   119→\n   120→  # remove build link\n   121→  rm \"$modulesdir\"/build\n   122→}\n   123→\n   124→_package-headers() {\n   125→  pkgdesc=\"Headers and scripts for building modules for the $pkgdesc kernel\"\n   126→  depends=(pahole)\n   127→\n   128→  cd $_srcname\n   129→  local builddir=\"$pkgdir/usr/lib/modules/$(<version)/build\"\n   130→\n   131→  echo \"Installing build files...\"\n   132→  install -Dt \"$builddir\" -m644 .config Makefile Module.symvers System.map \\\n   133→    localversion.* version vmlinux\n   134→  install -Dt \"$builddir/kernel\" -m644 kernel/Makefile\n   135→  install -Dt \"$builddir/arch/s390\" -m644 arch/s390/Makefile\n   136→  cp -t \"$builddir\" -a scripts\n   137→\n   138→  # s390x doesn't use objtool\n   139→  # install -Dt \"$builddir/tools/objtool\" tools/objtool/objtool\n   140→\n   141→  echo \"Installing headers...\"\n   142→  cp -t \"$builddir\" -a include\n   143→  cp -t \"$builddir/arch/s390\" -a arch/s390/include\n   144→  install -Dt \"$builddir/arch/s390/kernel\" -m644 arch/s390/kernel/asm-offsets.s\n   145→\n   146→  install -Dt \"$builddir/drivers/md\" -m644 drivers/md/*.h\n   147→  install -Dt \"$builddir/net/mac80211\" -m644 net/mac80211/*.h\n   148→\n   149→  echo \"Installing KConfig files...\"\n   150→  find . -name 'Kconfig*' -exec install -Dm644 {} \"$builddir/{}\" \\;\n   151→\n   152→  echo \"Removing unneeded architectures...\"\n   153→  local arch\n   154→  for arch in \"$builddir\"/arch/*/; do\n   155→    [[ $arch = */s390/ ]] && continue\n   156→    echo \"Removing $(basename \"$arch\")\"\n   157→    rm -r \"$arch\"\n   158→  done\n   159→\n   160→  echo \"Removing documentation...\"\n   161→  rm -r \"$builddir/Documentation\"\n   162→\n   163→  echo \"Removing broken symlinks...\"\n   164→  find -L \"$builddir\" -type l -printf 'Removing %P\\n' -delete\n   165→\n   166→  echo \"Removing loose objects...\"\n   167→  find \"$builddir\" -type f -name '*.o' -printf 'Removing %P\\n' -delete\n   168→\n   169→  echo \"Stripping build tools...\"\n   170→  local file\n   171→  while read -rd '' file; do\n   172→    case \"$(file -Sib \"$file\")\" in\n   173→      application/x-sharedlib\\;*)      # Libraries (.so)\n   174→        strip -v $STRIP_SHARED \"$file\" ;;\n   175→      application/x-archive\\;*)        # Libraries (.a)\n   176→        strip -v $STRIP_STATIC \"$file\" ;;\n   177→      application/x-executable\\;*)     # Binaries\n   178→        strip -v $STRIP_BINARIES \"$file\" ;;\n   179→      application/x-pie-executable\\;*) # Relocatable binaries\n   180→        strip -v $STRIP_SHARED \"$file\" ;;\n   181→    esac\n   182→  done < <(find \"$builddir\" -type f -perm -u+x ! -name vmlinux -print0)\n   183→\n   184→  echo \"Stripping vmlinux...\"\n   185→  strip -v $STRIP_STATIC \"$builddir/vmlinux\"\n   186→\n   187→  echo \"Adding symlink...\"\n   188→  mkdir -p \"$pkgdir/usr/src\"\n   189→  ln -sr \"$builddir\" \"$pkgdir/usr/src/$pkgbase\"\n   190→}\n   191→\n   192→pkgname=(\n   193→  \"$pkgbase\"\n   194→  \"$pkgbase-headers\"\n   195→)\n   196→for _p in \"${pkgname[@]}\"; do\n   197→  eval \"package_$_p() {\n   198→    $(declare -f \"_package${_p#$pkgbase}\")\n   199→    _package${_p#$pkgbase}\n   200→  }\"\n   201→done\n   202→\n   203→# vim:set ts=8 sts=2 sw=2 et:\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"a85a71b1-ec15-4ad5-8f2d-e07fe837d604","timestamp":"2026-01-27T19:55:34.260Z","sourceToolAssistantUUID":"02273a60-4031-419c-b04b-a4ed8ebce6eb"}
{"parentUuid":"6440d6c3-9280-4c6c-9cf6-5c32d3651fee","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_019BAC22vryoCoLdSq7DhpPz","type":"tool_result","content":"     1→#!/bin/bash\n     2→# Build static busybox on z/VM s390x RHEL system\n     3→# SPDX-License-Identifier: GPL-2.0-only\n     4→\n     5→# Source utilities (only common.sh since this runs on z/VM)\n     6→if [ -f \"scripts/common.sh\" ]; then\n     7→    source scripts/common.sh\n     8→else\n     9→    # Minimal logging for z/VM environment\n    10→    log_info() { echo \"[INFO] $1\"; }\n    11→    log_success() { echo \"[SUCCESS] $1\"; }\n    12→    log_error() { echo \"[ERROR] $1\" >&2; }\n    13→    die() { log_error \"$1\"; exit \"${2:-1}\"; }\n    14→fi\n    15→\n    16→log_info \"Building static busybox on native s390x...\"\n    17→\n    18→# Install build dependencies\n    19→sudo dnf install -y gcc make wget tar bzip2 glibc-static\n    20→\n    21→# Extract busybox\n    22→tar -xjf busybox-1.35.0.tar.bz2\n    23→cd busybox-1.35.0\n    24→\n    25→# Configure for static build\n    26→make defconfig\n    27→\n    28→# Enable static linking in config\n    29→cat >> .config << 'EOF'\n    30→CONFIG_STATIC=y\n    31→CONFIG_FEATURE_HAVE_RPC=n\n    32→CONFIG_SELINUX=n\n    33→CONFIG_FEATURE_SYSTEMD=n\n    34→CONFIG_PAM=n\n    35→CONFIG_FEATURE_UTMP=n\n    36→CONFIG_FEATURE_WTMP=n\n    37→CONFIG_LOCALE_SUPPORT=n\n    38→CONFIG_UNICODE_SUPPORT=n\n    39→EOF\n    40→\n    41→# Disable problematic options\n    42→sed -i 's/CONFIG_FEATURE_HAVE_RPC=y/CONFIG_FEATURE_HAVE_RPC=n/' .config\n    43→sed -i 's/CONFIG_LOCALE_SUPPORT=y/CONFIG_LOCALE_SUPPORT=n/' .config\n    44→\n    45→# Build static busybox\n    46→echo \"Building with static linking...\"\n    47→make CONFIG_STATIC=y LDFLAGS=\"-static\" -j$(nproc)\n    48→\n    49→# Verify the binary\n    50→if [ -f busybox ]; then\n    51→    echo \"Success: Busybox built successfully!\"\n    52→    echo \"File info:\"\n    53→    file busybox\n    54→    echo \"Size: $(du -h busybox | cut -f1)\"\n    55→    echo \"Static linking check:\"\n    56→    ldd busybox 2>&1 | head -1\n    57→    \n    58→    # Copy to home directory for easy transfer\n    59→    cp busybox ~/busybox-s390x-static\n    60→    chmod +x ~/busybox-s390x-static\n    61→    echo \"Success: Copied to ~/busybox-s390x-static\"\n    62→else\n    63→    echo \"ERROR: Build failed!\"\n    64→    exit 1\n    65→fi\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"9b1506b0-6206-4924-92fb-be8b1903b30d","timestamp":"2026-01-27T19:55:34.260Z","sourceToolAssistantUUID":"6440d6c3-9280-4c6c-9cf6-5c32d3651fee"}
{"parentUuid":"4ad9102d-59a7-45c4-9c4c-0742fcabac48","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01XyRYYnJEnZA6Hv9w1pszEC","type":"tool_result","content":"     1→# Arch Linux s390x Port with Systemd\n     2→\n     3→This repository contains a **complete, working** s390x Arch Linux system with **systemd support** and full root filesystem that boots successfully on IBM mainframes and QEMU emulation.\n     4→\n     5→## Quick Start\n     6→\n     7→```bash\n     8→# Build everything\n     9→make all\n    10→\n    11→# Test initramfs-only system\n    12→make test\n    13→\n    14→# Test with root filesystem\n    15→make test-rootfs\n    16→\n    17→# Test with systemd as init\n    18→make test-systemd\n    19→```\n    20→\n    21→## What's Working\n    22→\n    23→- **Arch Linux Kernel**: Linux 6.18.6-arch1 with Arch patches and CONFIG_UNIX/CONFIG_KMOD support (6.1MB)\n    24→- **Initramfs**: Complete 5.0MB initramfs with s390x busybox\n    25→- **Boot Process**: Successful boot to root filesystem with busybox shell\n    26→- **Root Filesystem**: **COMPLETE!** 150MB ext4 root filesystem with Arch Linux identification\n    27→- **Systemd**: **WORKING!** 42MB minimal systemd with mount/udevadm utilities - boots to \"Welcome to Arch Linux!\"\n    28→- **Modern Init**: Full systemd boot reaching Multi-User and Graphical targets\n    29→- **QEMU Testing**: Fully functional in s390x emulation\n    30→- **Ready for Hardware**: IPL configuration for real mainframes\n    31→\n    32→## Build Status\n    33→\n    34→### Core System Components\n    35→| Component | Status | Details |\n    36→|-----------|--------|---------|\n    37→| Kernel | Working | 6.1MB bootable s390x kernel with CONFIG_UNIX/CONFIG_KMOD (6.18.6-arch1) |\n    38→| Initramfs | Working | 5.0MB with native s390x binaries |\n    39→| Boot Process | Working | IPL → kernel → initramfs → root filesystem → systemd |\n    40→| Root Filesystem | **COMPLETE** | 150MB ext4 with working busybox switch_root |\n    41→| Systemd | **WORKING** | 42MB minimal systemd with mount/udevadm - reaches graphical target |\n    42→| mkinitcpio | Fixed | Adapted for s390x architecture |\n    43→\n    44→### Userspace Components\n    45→| Component | Status | Details |\n    46→|-----------|--------|---------|\n    47→| Init System | **COMPLETE** | Busybox in initramfs → switch_root → systemd |\n    48→| Shell | Minimal | Busybox sh (not bash) |\n    49→| Core Utilities | **Enhanced** | Busybox applets + mount/udevadm/kmod utilities |\n    50→| Package Manager | TODO | Pacman needs porting |\n    51→| Systemd Runtime | **WORKING** | Full systemd boot with journal, udev, and basic services |\n    52→| Bash | TODO | Needs s390x build |\n    53→| GNU Coreutils | TODO | Replace busybox applets |\n    54→\n    55→### Legend\n    56→- **Complete** - Fully working\n    57→- **Minimal** - Working but minimal implementation\n    58→- **TODO** - Not yet implemented\n    59→\n    60→## Build System\n    61→\n    62→Uses **Fedora containers with Podman** for cross-compilation:\n    63→\n    64→```bash\n    65→# Container image:\n    66→s390x-archlinux-dev          # All-in-one development container\n    67→```\n    68→\n    69→### Build Targets:\n    70→- `make all` - Build complete system (kernel + initramfs + systemd)\n    71→- `make kernel` - Cross-compile Arch Linux kernel for s390x\n    72→- `make initramfs` - Generate initramfs with mkinitcpio\n    73→- `make systemd` - Build systemd natively on z/VM (requires .env configuration)\n    74→- `make test` - Test initramfs-only system with QEMU\n    75→- `make test-rootfs` - Test with root filesystem switching\n    76→- `make test-systemd` - Test with systemd as init (full modern boot)\n    77→- `make clean` - Clean build artifacts\n    78→\n    79→### Key Scripts:\n    80→- `scripts/build-arch-kernel.sh` - Cross-compile Arch Linux kernel\n    81→- `scripts/build-initramfs-final.sh` - Generate initramfs\n    82→- `scripts/build-systemd-zvm.sh` - Build systemd on z/VM\n    83→- `scripts/deploy-and-build-systemd-zvm.sh` - Orchestrate systemd build\n    84→- `scripts/run-qemu-initramfs-only.sh` - Test initramfs-only system\n    85→- `scripts/test-qemu-rootfs.sh` - Test with root filesystem\n    86→- `scripts/test-qemu-systemd.sh` - Test with systemd as init\n    87→- `scripts/build-busybox-zvm.sh` - Build static busybox on z/VM\n    88→\n    89→## z/VM Configuration\n    90→\n    91→For building systemd and busybox natively on s390x hardware, you'll need access to an IBM z/VM system:\n    92→\n    93→1. **Copy the example configuration**:\n    94→   ```bash\n    95→   cp .env.example .env\n    96→   ```\n    97→\n    98→2. **Edit `.env` with your z/VM details**:\n    99→   ```bash\n   100→   ZVM_HOST=your.zvm.host\n   101→   ZVM_USER=your_username\n   102→   ZVM_SSH_KEY=\"-----BEGIN OPENSSH PRIVATE KEY-----\n   103→   ... your SSH private key content ...\n   104→   -----END OPENSSH PRIVATE KEY-----\"\n   105→   ```\n   106→\n   107→3. **Build systemd**:\n   108→   ```bash\n   109→   make systemd\n   110→   ```\n   111→\n   112→The scripts will automatically load the `.env` configuration when needed.\n   113→\n   114→## Testing\n   115→\n   116→```bash\n   117→# Install QEMU s390x\n   118→sudo pacman -S qemu-system-s390x  # Arch Linux\n   119→# or\n   120→sudo apt install qemu-system-s390x # Ubuntu/Debian\n   121→\n   122→# Test initramfs-only system\n   123→make test\n   124→\n   125→# Test root filesystem switching\n   126→make test-rootfs\n   127→\n   128→# Test full systemd boot (requires systemd build)\n   129→make test-systemd\n   130→```\n   131→\n   132→**Expected Results**: \n   133→- `make test` - System boots to emergency shell in initramfs-only mode (press Ctrl-A X to exit)\n   134→- `make test-rootfs` - Boots completely to root filesystem with busybox shell\n   135→- `make test-systemd` - Full systemd boot reaching \"Welcome to Arch Linux!\" and graphical target\n   136→\n   137→[![asciicast](https://asciinema.org/a/u49jp0Bg7YoGtlGyTh6C9RJ7P.svg)](https://asciinema.org/a/u49jp0Bg7YoGtlGyTh6C9RJ7P)\n   138→\n   139→## Output Files\n   140→\n   141→After building:\n   142→- `boot/vmlinuz-linux` - Ready-to-use s390x kernel\n   143→- `boot/initramfs-linux.img` - Working initramfs  \n   144→- `boot/rootfs-s390x.img` - Root filesystem image (created by test-rootfs)\n   145→- `boot/generic.ins` - IPL configuration for real hardware\n   146→- `boot/arch.prm` - Kernel parameters\n   147→- `boot/busybox-s390x-static` - Static busybox binary built on z/VM (used by mkinitcpio)\n   148→- `output/systemd-root/` - Complete systemd installation for root filesystem\n   149→\n   150→## Technical Details\n   151→\n   152→### s390x Adaptations:\n   153→- Big-endian architecture support\n   154→- IPL boot process (not BIOS/UEFI)\n   155→- Channel I/O subsystem drivers\n   156→- mkinitcpio modified for cross-architecture builds\n   157→\n   158→### Key Fixes Applied:\n   159→1. **mkinitcpio adaptation** - Fixed `add_binary` vs `add_file` issue for init scripts\n   160→2. **Static busybox in initramfs** - Built natively on z/VM for early boot operations\n   161→3. **Architecture compatibility** - Fixed base hook to exclude x86_64 binaries\n   162→4. **switch_root support** - Enables transition from initramfs to systemd on root filesystem\n   163→5. **Kernel configuration** - Added CONFIG_UNIX and CONFIG_KMOD for systemd support\n   164→\n   165→## System Boot Sequence\n   166→\n   167→The complete boot process follows this sequence:\n   168→\n   169→1. **IPL (Initial Program Load)** - IBM mainframe boot process\n   170→2. **Kernel loads** - Linux 6.18.6-arch1 s390x kernel with Arch patches\n   171→3. **Initramfs unpacked** - Contains busybox and init script\n   172→4. **Early boot** - Busybox provides utilities for mounting and setup\n   173→5. **Root filesystem mounted** - `/dev/vda` mounted to `/new_root`\n   174→6. **switch_root** - Busybox `switch_root` transitions to real root filesystem\n   175→7. **Systemd starts** - `/usr/lib/systemd/systemd` becomes PID 1\n   176→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"7f833851-c219-48f2-aa9c-e31cfa162b54","timestamp":"2026-01-27T19:55:34.260Z","sourceToolAssistantUUID":"4ad9102d-59a7-45c4-9c4c-0742fcabac48"}
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{"parentUuid":"bbbdea56-35da-4b19-9d37-1eb438db0202","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","message":{"model":"claude-haiku-4-5-20251001","id":"msg_0129SCVBqednzX9c3xgjwwac","type":"message","role":"assistant","content":[{"type":"text","text":"Now let me read the base hook patch to count applets:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":125,"cache_creation_input_tokens":256,"cache_read_input_tokens":29692,"cache_creation":{"ephemeral_5m_input_tokens":256,"ephemeral_1h_input_tokens":0},"output_tokens":1,"service_tier":"standard"}},"requestId":"req_011CXYUG9PZoGfDbd7NxXdLz","type":"assistant","uuid":"0100deb0-c9c5-4c9c-ac60-619db5151d60","timestamp":"2026-01-27T19:55:38.959Z"}
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{"parentUuid":"8332ee93-a80d-4406-9d7e-082b8414987b","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01RL3ovWbRi4s76Zy6USUVxj","type":"tool_result","content":"     1→#!/usr/bin/env bash\n     2→# SPDX-License-Identifier: GPL-2.0-only\n     3→# Modified for s390x cross-architecture support\n     4→\n     5→build() {\n     6→    local applet\n     7→    \n     8→    echo \"=== S390X BASE HOOK STARTING ===\"\n     9→    \n    10→    # Use s390x busybox binary if available (cross-architecture support)\n    11→    if [[ -f \"/work/boot/busybox-s390x-static\" ]]; then\n    12→        echo \"Using s390x static busybox binary\"\n    13→        add_file \"/work/boot/busybox-s390x-static\" \"/usr/bin/busybox\" 755\n    14→        \n    15→        # Create symlinks for busybox applets (using a known list since we can't execute cross-arch binary)\n    16→        local busybox_applets=(\n    17→            \"[\" \"[[\" \"ash\" \"awk\" \"basename\" \"cat\" \"chgrp\" \"chmod\" \"chown\" \"cp\" \"cut\"\n    18→            \"date\" \"dd\" \"df\" \"dirname\" \"dmesg\" \"du\" \"echo\" \"env\" \"expr\" \"false\"\n    19→            \"find\" \"grep\" \"head\" \"hostname\" \"id\" \"kill\" \"ln\" \"ls\" \"mkdir\" \"mknod\"\n    20→            \"mktemp\" \"mount\" \"mv\" \"printf\" \"ps\" \"pwd\" \"readlink\" \"rm\" \"rmdir\"\n    21→            \"sed\" \"sh\" \"sleep\" \"sort\" \"stat\" \"switch_root\" \"tail\" \"tar\" \"test\" \"touch\" \"tr\"\n    22→            \"true\" \"umount\" \"uname\" \"uniq\" \"wc\" \"which\" \"whoami\" \"xargs\"\n    23→        )\n    24→        \n    25→        for applet in \"${busybox_applets[@]}\"; do\n    26→            add_symlink \"/usr/bin/$applet\" busybox\n    27→        done\n    28→        \n    29→        # Manually add switch_root symlink (critical for root filesystem switching)\n    30→        add_symlink \"/usr/bin/switch_root\" busybox\n    31→    elif [[ -f \"/work/boot/busybox-s390x-native\" ]]; then\n    32→        echo \"Using s390x busybox binary\"\n    33→        add_file \"/work/boot/busybox-s390x-native\" \"/usr/bin/busybox\" 755\n    34→        \n    35→        # Create symlinks for busybox applets (using a known list since we can't execute cross-arch binary)\n    36→        local busybox_applets=(\n    37→            \"[\" \"[[\" \"ash\" \"awk\" \"basename\" \"cat\" \"chgrp\" \"chmod\" \"chown\" \"cp\" \"cut\"\n    38→            \"date\" \"dd\" \"df\" \"dirname\" \"dmesg\" \"du\" \"echo\" \"env\" \"expr\" \"false\"\n    39→            \"find\" \"grep\" \"head\" \"hostname\" \"id\" \"kill\" \"ln\" \"ls\" \"mkdir\" \"mknod\"\n    40→            \"mktemp\" \"mount\" \"mv\" \"printf\" \"ps\" \"pwd\" \"readlink\" \"rm\" \"rmdir\"\n    41→            \"sed\" \"sh\" \"sleep\" \"sort\" \"stat\" \"switch_root\" \"tail\" \"tar\" \"test\" \"touch\" \"tr\"\n    42→            \"true\" \"umount\" \"uname\" \"uniq\" \"wc\" \"which\" \"whoami\" \"xargs\"\n    43→        )\n    44→        \n    45→        for applet in \"${busybox_applets[@]}\"; do\n    46→            add_symlink \"/usr/bin/$applet\" busybox\n    47→        done\n    48→        \n    49→        # Manually add switch_root symlink (critical for root filesystem switching)\n    50→        add_symlink \"/usr/bin/switch_root\" busybox\n    51→    else\n    52→        echo \"Warning: s390x busybox not found, using system busybox (may cause architecture mismatch)\"\n    53→        # Try to find busybox in various locations\n    54→        if [[ -f /usr/lib/initcpio/busybox ]]; then\n    55→            add_binary /usr/lib/initcpio/busybox /bin/busybox\n    56→        elif [[ -f /usr/bin/busybox ]]; then\n    57→            add_binary /usr/bin/busybox /bin/busybox\n    58→        elif [[ -f /bin/busybox ]]; then\n    59→            add_binary /bin/busybox /bin/busybox\n    60→        else\n    61→            echo \"ERROR: No busybox binary found!\"\n    62→            return 1\n    63→        fi\n    64→        # Get applet list from the binary we found\n    65→        for applet in $(busybox --list 2>/dev/null || echo \"sh ash\"); do\n    66→            add_symlink \"/usr/bin/$applet\" busybox\n    67→        done\n    68→    fi\n    69→\n    70→    # Add kmod with applet symlinks (if available)\n    71→    if type -P kmod >/dev/null 2>&1; then\n    72→        echo \"Adding kmod utilities...\"\n    73→        add_binary kmod\n    74→        for applet in {dep,ins,rm,ls}mod mod{probe,info}; do\n    75→            add_symlink \"/usr/bin/$applet\" kmod\n    76→        done\n    77→    else\n    78→        echo \"Warning: kmod not found, module utilities will not be available\"\n    79→    fi\n    80→\n    81→    # Check for additional utilities (may not be available in cross-compile environment)\n    82→    # IMPORTANT: Skip mount/umount as they should come from busybox to avoid arch mismatch\n    83→    for binary in blkid switch_root; do\n    84→        if type -P \"$binary\" >/dev/null 2>&1; then\n    85→            echo \"Adding $binary\"\n    86→            add_binary \"$binary\"\n    87→        else\n    88→            echo \"Warning: $binary not found, skipping (functionality may be limited)\"\n    89→        fi\n    90→    done\n    91→\n    92→    # Ensure switch_root symlink exists (critical for root filesystem switching)\n    93→    echo \"Ensuring switch_root symlink...\"\n    94→    add_symlink \"/usr/bin/switch_root\" busybox\n    95→\n    96→    # Always add init files\n    97→    echo \"Adding init files...\"\n    98→    # Check both lib and lib64 locations for init files\n    99→    if [[ -f /usr/lib/initcpio/init_functions ]]; then\n   100→        add_file \"/usr/lib/initcpio/init_functions\" \"/init_functions\" 644\n   101→    elif [[ -f /usr/lib64/initcpio/init_functions ]]; then\n   102→        add_file \"/usr/lib64/initcpio/init_functions\" \"/init_functions\" 644\n   103→    else\n   104→        echo \"ERROR: init_functions not found in /usr/lib/initcpio or /usr/lib64/initcpio\"\n   105→        return 1\n   106→    fi\n   107→    \n   108→    # Use standard Arch init but patch the switch_root call\n   109→    echo \"Patching standard init script for s390x...\"\n   110→    \n   111→    # Copy the standard init and patch it\n   112→    if [[ -f /usr/lib/initcpio/init ]]; then\n   113→        cp /usr/lib/initcpio/init /tmp/s390x_init\n   114→    elif [[ -f /usr/lib64/initcpio/init ]]; then\n   115→        cp /usr/lib64/initcpio/init /tmp/s390x_init\n   116→    else\n   117→        echo \"ERROR: Standard init not found\"\n   118→        return 1\n   119→    fi\n   120→    \n   121→    # Patch the switch_root line to use busybox\n   122→    sed -i 's|/usr/bin/switch_root|/usr/bin/busybox switch_root|g' /tmp/s390x_init\n   123→    \n   124→    # Add debug break when udevadm fails - use a more aggressive replacement\n   125→    sed -i 's|udevadm settle|echo \":: udevadm not available, dropping to shell\"; /bin/sh|g' /tmp/s390x_init\n   126→    \n   127→    # Add the patched init script to the initramfs\n   128→    add_file \"/tmp/s390x_init\" \"/init\" 755\n   129→    echo \"✓ Standard Arch init patched for s390x (switch_root -> busybox switch_root)\"\n   130→    echo \"=== S390X BASE HOOK COMPLETED ===\"\n   131→}\n   132→\n   133→help() {\n   134→    cat <<HELPEOF\n   135→This hook provides crucial runtime necessities for booting. This is a modified \n   136→version with s390x cross-architecture support. DO NOT remove this hook unless \n   137→you know what you're doing.\n   138→HELPEOF\n   139→}\n   140→\n   141→# vim: set ft=sh ts=4 sw=4 et:\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"c438caa7-2683-4489-8c99-f531c484e465","timestamp":"2026-01-27T19:55:39.681Z","sourceToolAssistantUUID":"8332ee93-a80d-4406-9d7e-082b8414987b"}
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{"parentUuid":"3e0fdc59-cf28-4102-a426-cc0f70b51ed1","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","message":{"model":"claude-haiku-4-5-20251001","id":"msg_01X1HWXHgfTPbDNEybAvAaoH","type":"message","role":"assistant","content":[{"type":"text","text":"Perfect! Now let me search for any repository URL references and check on the initramfs embedding of busybox:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":3132,"cache_read_input_tokens":29948,"cache_creation":{"ephemeral_5m_input_tokens":3132,"ephemeral_1h_input_tokens":0},"output_tokens":1,"service_tier":"standard"}},"requestId":"req_011CXYUGHhsk1RneZDrMQaYX","type":"assistant","uuid":"6f543cf9-443b-4c84-ae78-0c2c33d127f4","timestamp":"2026-01-27T19:55:41.720Z"}
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{"parentUuid":"fe32caa2-9d09-4ff1-ab0f-026c78e6a627","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01HX1qZ9k7x2ymxXm2oMcWxb","type":"tool_result","content":"Found 1 file\nnotes/fosdem-slides.md"}]},"uuid":"c9e086b4-50fa-402f-8523-1e4719580c62","timestamp":"2026-01-27T19:55:43.744Z","sourceToolAssistantUUID":"fe32caa2-9d09-4ff1-ab0f-026c78e6a627"}
{"parentUuid":"67ca9f22-83e9-4e8e-84bd-ebc51c5dd5c2","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01RUAxz4jYBCr4DQFuq1hM1V","type":"tool_result","content":"     1→#!/bin/bash\n     2→\n     3→set -e\n     4→\n     5→# Configuration\n     6→KERNEL_VERSION=\"${KERNEL_VERSION:-6.18.6}\"\n     7→SCRIPT_DIR=\"$(cd \"$(dirname \"${BASH_SOURCE[0]}\")\" && pwd)\"\n     8→PROJECT_ROOT=\"$(dirname \"$SCRIPT_DIR\")\"\n     9→OUTPUT_DIR=\"$PROJECT_ROOT/output\"\n    10→INITRAMFS_NAME=\"initramfs-${KERNEL_VERSION}-s390x.img\"\n    11→MKINITCPIO_SOURCE=\"$PROJECT_ROOT/mkinitcpio-source\"\n    12→MKINITCPIO_REPO=\"https://github.com/archlinux/mkinitcpio.git\"\n    13→\n    14→# Colors\n    15→RED='\\033[0;31m'\n    16→GREEN='\\033[0;32m'\n    17→YELLOW='\\033[1;33m'\n    18→NC='\\033[0m'\n    19→\n    20→echo -e \"${GREEN}=== Building initramfs with modified mkinitcpio ===${NC}\"\n    21→\n    22→# Clone mkinitcpio from upstream (latest version)\n    23→echo -e \"${YELLOW}Cloning mkinitcpio from upstream (latest)...${NC}\"\n    24→rm -rf \"$MKINITCPIO_SOURCE\"\n    25→git clone --depth 1 \"$MKINITCPIO_REPO\" \"$MKINITCPIO_SOURCE\"\n    26→if [ $? -ne 0 ]; then\n    27→    echo -e \"${RED}Failed to clone mkinitcpio${NC}\"\n    28→    exit 1\n    29→fi\n    30→echo -e \"${GREEN}OK: Cloned latest mkinitcpio${NC}\"\n    31→\n    32→# Create build script that runs inside container\n    33→cat > \"$PROJECT_ROOT/build-final-initramfs.sh\" << 'EOF'\n    34→#!/bin/bash\n    35→set -e\n    36→\n    37→KERNEL_VERSION=\"6.18.6\"\n    38→INITRAMFS_OUTPUT=\"/work/output/initramfs-${KERNEL_VERSION}-s390x.img\"\n    39→\n    40→echo \"Building and installing modified mkinitcpio...\"\n    41→\n    42→# Copy the mkinitcpio source\n    43→mkdir -p /tmp/mkinitcpio\n    44→cp -r /work/mkinitcpio-source/* /tmp/mkinitcpio/\n    45→cp -r /work/mkinitcpio-source/.[^.]* /tmp/mkinitcpio/ 2>/dev/null || true\n    46→cd /tmp/mkinitcpio\n    47→\n    48→# Verify we're in the right directory\n    49→if [ ! -f \"meson.build\" ]; then\n    50→    echo \"ERROR: meson.build not found. Directory contents:\"\n    51→    ls -la\n    52→    exit 1\n    53→fi\n    54→\n    55→# Apply s390x patches\n    56→echo \"Applying s390x patches to mkinitcpio...\"\n    57→\n    58→# Check if patch file exists and apply it\n    59→if [ -f \"/work/patches/mkinitcpio-s390x-base-hook.patch\" ]; then\n    60→    echo \"Found mkinitcpio patch, applying...\"\n    61→    cp /work/patches/mkinitcpio-s390x-base-hook.patch install/base\n    62→    chmod +x install/base\n    63→    echo \"OK: Applied s390x patches to base install hook\"\n    64→else\n    65→    echo \"ERROR: Patch file not found at /work/patches/mkinitcpio-s390x-base-hook.patch\"\n    66→    exit 1\n    67→fi\n    68→\n    69→# Clean any existing build directory\n    70→rm -rf build\n    71→\n    72→# Build with meson\n    73→echo \"Setting up meson build...\"\n    74→meson setup build --prefix=/usr --sysconfdir=/etc\n    75→\n    76→echo \"Installing mkinitcpio...\"\n    77→meson install -C build\n    78→\n    79→# Check where files were installed\n    80→echo \"Checking mkinitcpio installation...\"\n    81→find /usr -name \"init_functions\" -o -name \"init\" | grep initcpio || true\n    82→ls -la /usr/lib/initcpio/ 2>/dev/null || true\n    83→ls -la /usr/lib64/initcpio/ 2>/dev/null || true\n    84→\n    85→echo \"Setting up s390x environment...\"\n    86→\n    87→# Install missing dependencies\n    88→echo \"Installing required dependencies...\"\n    89→dnf install -y kmod-libs kmod util-linux busybox bsdtar || echo \"Warning: Some packages could not be installed\"\n    90→\n    91→# Create kernel module directory structure\n    92→KERNEL_DIR=\"/lib/modules/${KERNEL_VERSION}-s390x\"\n    93→mkdir -p \"$KERNEL_DIR\"\n    94→\n    95→# Create minimal modules.dep files to satisfy mkinitcpio\n    96→touch \"$KERNEL_DIR/modules.dep\"\n    97→touch \"$KERNEL_DIR/modules.dep.bin\"\n    98→touch \"$KERNEL_DIR/modules.alias\"\n    99→touch \"$KERNEL_DIR/modules.alias.bin\"\n   100→\n   101→# Copy kernel if it exists\n   102→if [ -f \"/work/output/vmlinuz-${KERNEL_VERSION}-s390x\" ]; then\n   103→    cp \"/work/output/vmlinuz-${KERNEL_VERSION}-s390x\" \"/boot/vmlinuz-${KERNEL_VERSION}-s390x\"\n   104→    echo \"Kernel copied to /boot/\"\n   105→fi\n   106→\n   107→# Ensure init files are in the correct location\n   108→echo \"Verifying init files installation...\"\n   109→# Check both lib and lib64 locations\n   110→if [ -f /usr/lib/initcpio/init ] || [ -f /usr/lib64/initcpio/init ]; then\n   111→    echo \"OK: init found\"\n   112→else\n   113→    echo \"FAIL: init missing - copying from source\"\n   114→    if [ -f /tmp/mkinitcpio/init ]; then\n   115→        mkdir -p /usr/lib/initcpio\n   116→        cp /tmp/mkinitcpio/init /usr/lib/initcpio/init\n   117→        chmod 755 /usr/lib/initcpio/init\n   118→    fi\n   119→fi\n   120→\n   121→if [ -f /usr/lib/initcpio/init_functions ] || [ -f /usr/lib64/initcpio/init_functions ]; then\n   122→    echo \"OK: init_functions found\"\n   123→else\n   124→    echo \"FAIL: init_functions missing - copying from source\"\n   125→    if [ -f /tmp/mkinitcpio/init_functions ]; then\n   126→        mkdir -p /usr/lib/initcpio\n   127→        cp /tmp/mkinitcpio/init_functions /usr/lib/initcpio/init_functions\n   128→    fi\n   129→fi\n   130→\n   131→# Create symlinks if installed in lib64\n   132→if [ -d /usr/lib64/initcpio ] && [ ! -d /usr/lib/initcpio ]; then\n   133→    echo \"Creating symlinks from lib64 to lib...\"\n   134→    mkdir -p /usr/lib\n   135→    ln -sf /usr/lib64/initcpio /usr/lib/initcpio\n   136→fi\n   137→\n   138→# Create a minimal working s390x configuration\n   139→echo \"Creating minimal s390x configuration...\"\n   140→\n   141→# Copy custom init if available\n   142→if [ -f /work/custom-init ]; then\n   143→    echo \"Using custom init for initramfs-only system\"\n   144→    cp /work/custom-init /usr/lib/initcpio/init\n   145→    chmod 755 /usr/lib/initcpio/init\n   146→fi\n   147→\n   148→# Copy mkinitcpio configuration\n   149→if [ -f \"/work/patches/mkinitcpio-s390x.conf\" ]; then\n   150→    echo \"Using s390x mkinitcpio configuration...\"\n   151→    cp /work/patches/mkinitcpio-s390x.conf /etc/mkinitcpio-s390x.conf\n   152→else\n   153→    echo \"ERROR: Configuration file not found at /work/patches/mkinitcpio-s390x.conf\"\n   154→    exit 1\n   155→fi\n   156→\n   157→echo \"Generating initramfs with mkinitcpio...\"\n   158→echo \"Configuration:\"\n   159→cat /etc/mkinitcpio-s390x.conf\n   160→\n   161→# The s390x busybox integration is now handled by the patched base install hook\n   162→echo \"s390x busybox will be handled by the patched mkinitcpio base hook...\"\n   163→\n   164→# Ensure busybox binary is available for the base hook\n   165→if [ -f \"/work/boot/busybox-s390x-static\" ]; then\n   166→    echo \"OK: Found s390x static busybox at /work/boot/busybox-s390x-static\"\n   167→    ls -la /work/boot/busybox-s390x-static\n   168→elif [ -f \"/work/boot/busybox-s390x-native\" ]; then\n   169→    echo \"OK: Found s390x native busybox at /work/boot/busybox-s390x-native\"\n   170→    ls -la /work/boot/busybox-s390x-native\n   171→else\n   172→    echo \"ERROR: No s390x busybox binary found in /work/boot/\"\n   173→    echo \"Available files in /work/boot:\"\n   174→    ls -la /work/boot/\n   175→    exit 1\n   176→fi\n   177→\n   178→# Debug: List all files that mkinitcpio expects\n   179→echo \"Checking mkinitcpio dependencies:\"\n   180→ls -la /usr/lib/initcpio/ 2>/dev/null || echo \"/usr/lib/initcpio/ not found\"\n   181→\n   182→# Generate the initramfs with verbose output\n   183→echo \"Running mkinitcpio...\"\n   184→/usr/bin/mkinitcpio -c /etc/mkinitcpio-s390x.conf \\\n   185→                    -g \"$INITRAMFS_OUTPUT\" \\\n   186→                    -k \"${KERNEL_VERSION}-s390x\" \\\n   187→                    -v 2>&1 | tee /tmp/mkinitcpio.log\n   188→\n   189→echo \"mkinitcpio generation completed!\"\n   190→if [ -f \"$INITRAMFS_OUTPUT\" ]; then\n   191→    ls -la \"$INITRAMFS_OUTPUT\"\n   192→    echo \"Initramfs size: $(du -h \"$INITRAMFS_OUTPUT\" | cut -f1)\"\n   193→    \n   194→    # Analyze the generated initramfs using lsinitcpio\n   195→    echo \"\"\n   196→    echo \"Analyzing generated initramfs...\"\n   197→    echo \"Checking for critical files:\"\n   198→    \n   199→    # Use lsinitcpio to list contents (it handles concatenated CPIO properly)\n   200→    if command -v lsinitcpio >/dev/null 2>&1; then\n   201→        echo \"\"\n   202→        # Check for critical files\n   203→        if lsinitcpio \"$INITRAMFS_OUTPUT\" | grep -q \"^init$\"; then\n   204→            echo \"OK: /init found\"\n   205→        else\n   206→            echo \"FAIL: /init missing!\"\n   207→        fi\n   208→        \n   209→        if lsinitcpio \"$INITRAMFS_OUTPUT\" | grep -q \"^init_functions$\"; then\n   210→            echo \"OK: /init_functions found\"\n   211→        else\n   212→            echo \"FAIL: /init_functions missing!\"\n   213→        fi\n   214→        \n   215→        # Check for busybox\n   216→        if lsinitcpio \"$INITRAMFS_OUTPUT\" | grep -E \"bin/busybox$|usr/bin/busybox$\" >/dev/null; then\n   217→            echo \"OK: busybox found in initramfs\"\n   218→        else\n   219→            echo \"FAIL: busybox missing from initramfs!\"\n   220→        fi\n   221→        \n   222→        # Show first 20 files\n   223→        echo \"\"\n   224→        echo \"First 20 files in initramfs:\"\n   225→        lsinitcpio \"$INITRAMFS_OUTPUT\" | head -20\n   226→    else\n   227→        echo \"Note: lsinitcpio not available for detailed analysis\"\n   228→        echo \"Initramfs was created successfully but contents cannot be verified\"\n   229→    fi\n   230→    \n   231→    echo \"\"\n   232→    echo \"OK: Success!\"\n   233→else\n   234→    echo \"FAIL: Failed to generate initramfs\"\n   235→    exit 1\n   236→fi\n   237→EOF\n   238→\n   239→chmod +x \"$PROJECT_ROOT/build-final-initramfs.sh\"\n   240→\n   241→# mkinitcpio source already cloned at the beginning of the script\n   242→\n   243→# Run mkinitcpio in container\n   244→echo -e \"${YELLOW}Running modified mkinitcpio for s390x...${NC}\"\n   245→sudo podman run --rm \\\n   246→    -v \"$PROJECT_ROOT:/work\" \\\n   247→    -w /work \\\n   248→    --privileged \\\n   249→    s390x-archlinux-dev \\\n   250→    /work/build-final-initramfs.sh\n   251→\n   252→# Clean up copied source\n   253→rm -rf \"$PROJECT_ROOT/mkinitcpio-source\"\n   254→\n   255→# Fix permissions on output files (they were created as root in container)\n   256→if [ -f \"$OUTPUT_DIR/$INITRAMFS_NAME\" ]; then\n   257→    echo -e \"${YELLOW}Fixing file permissions...${NC}\"\n   258→    sudo chown $(id -u):$(id -g) \"$OUTPUT_DIR/$INITRAMFS_NAME\"\n   259→    chmod 644 \"$OUTPUT_DIR/$INITRAMFS_NAME\"\n   260→fi\n   261→\n   262→# Check result\n   263→if [ -f \"$OUTPUT_DIR/$INITRAMFS_NAME\" ]; then\n   264→    SIZE=$(du -h \"$OUTPUT_DIR/$INITRAMFS_NAME\" | cut -f1)\n   265→    echo -e \"${GREEN}OK: Initramfs created with modified mkinitcpio: $OUTPUT_DIR/$INITRAMFS_NAME (${SIZE})${NC}\"\n   266→    \n   267→    # Update todo to completed\n   268→    echo -e \"${YELLOW}Marking initramfs build as completed...${NC}\"\n   269→else\n   270→    echo -e \"${RED}FAIL: Failed to create initramfs with modified mkinitcpio${NC}\"\n   271→    exit 1\n   272→fi\n   273→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"d0007fda-cc6e-4bc9-9817-feadeee98fe4","timestamp":"2026-01-27T19:55:43.751Z","sourceToolAssistantUUID":"67ca9f22-83e9-4e8e-84bd-ebc51c5dd5c2"}
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{"parentUuid":"fe6a2286-e17c-4dce-8fe4-96e52bf8d5d3","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KktxJy6ud7s65awA4N7JKF","type":"tool_result","content":"     1→# CODEOWNERS for Arch Linux s390x LPAR boot components\n     2→\n     3→* @pfeifferj josie@redhat.com\n     4→* @Morganamilo morganamilo@archlinux.org\n     5→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"ae3a87f7-d8b3-4c9e-bfe9-7708b0c6d49e","timestamp":"2026-01-27T19:55:46.724Z","sourceToolAssistantUUID":"fe6a2286-e17c-4dce-8fe4-96e52bf8d5d3"}
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{"parentUuid":"dd7ed55b-64fc-4f88-80f4-4fcaf6bc6838","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","message":{"model":"claude-haiku-4-5-20251001","id":"msg_01D8bJN24U3qYYboQD2XUwck","type":"message","role":"assistant","content":[{"type":"text","text":"Now let me count the applets precisely from the patch and verify the kernel release string by examining how it would be composed:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":5,"cache_creation_input_tokens":647,"cache_read_input_tokens":37539,"cache_creation":{"ephemeral_5m_input_tokens":647,"ephemeral_1h_input_tokens":0},"output_tokens":1,"service_tier":"standard"}},"requestId":"req_011CXYUH9U4DctKB3n6YsC9g","type":"assistant","uuid":"d06792a2-a51e-4f64-a8a5-018b43737da4","timestamp":"2026-01-27T19:55:54.085Z"}
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{"parentUuid":"2ab3d034-df86-4f6c-ba01-8ce0be68a639","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","message":{"model":"claude-haiku-4-5-20251001","id":"msg_01DJ8gicxEMXZp94fkFnTGoD","type":"message","role":"assistant","content":[{"type":"text","text":"Let me directly count the applets in the array in the patch:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":456,"cache_read_input_tokens":38186,"cache_creation":{"ephemeral_5m_input_tokens":456,"ephemeral_1h_input_tokens":0},"output_tokens":3,"service_tier":"standard"}},"requestId":"req_011CXYUHWb4Gd8BWTzRzApqH","type":"assistant","uuid":"308a481d-6a6d-4f2a-bdf6-ad47b12c0b5f","timestamp":"2026-01-27T19:55:57.277Z"}
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{"parentUuid":"384ba0b3-531e-4d2a-93e1-a46982c8d3b7","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch","sessionId":"b815eccc-dbf4-406d-9db6-c4e33f59cbdc","version":"2.1.19","gitBranch":"main","agentId":"a77d51e","slug":"cozy-mixing-journal","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Pq8TyiG66935BV9UHmPDcc","type":"tool_result","content":"        local busybox_applets=(\n            \"[\" \"[[\" \"ash\" \"awk\" \"basename\" \"cat\" \"chgrp\" \"chmod\" \"chown\" \"cp\" \"cut\"\n            \"date\" \"dd\" \"df\" \"dirname\" \"dmesg\" \"du\" \"echo\" \"env\" \"expr\" \"false\"\n            \"find\" \"grep\" \"head\" \"hostname\" \"id\" \"kill\" \"ln\" \"ls\" \"mkdir\" \"mknod\"\n            \"mktemp\" \"mount\" \"mv\" \"printf\" \"ps\" \"pwd\" \"readlink\" \"rm\" \"rmdir\"\n            \"sed\" \"sh\" \"sleep\" \"sort\" \"stat\" \"switch_root\" \"tail\" \"tar\" \"test\" \"touch\" \"tr\"\n            \"true\" \"umount\" \"uname\" \"uniq\" \"wc\" \"which\" \"whoami\" \"xargs\"\n        )","is_error":false}]},"uuid":"e39600d8-c190-43de-850c-67603c0be7f3","timestamp":"2026-01-27T19:55:59.847Z","sourceToolAssistantUUID":"384ba0b3-531e-4d2a-93e1-a46982c8d3b7"}
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{"parentUuid":"ac047cfd-b0f7-4178-92b5-da05030e9d73","isSidechain":true,"us{"parentUuid":null,"isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch/notes","sessionId":"d5eb9b17-ee31-4634-b7b2-132deec4881d","version":"2.1.19","gitBranch":"main","agentId":"a8bceda","slug":"cozy-seeking-catmull","type":"user","message":{"role":"user","content":"I need a thorough root-cause analysis of a beamer presentation color bug. DO NOT write any code or make edits -- only research.\n\n## The problem\nSlides WITHOUT code blocks render body text correctly (bright, proper color). Slides WITH code blocks (which pandoc marks as `[fragile]` frames) have dimmed/wrong-colored body text. `\\setbeamercovered{invisible}` has been added but hasn't fixed the visual issue on fragile frames.\n\n## Files to read (read ALL of these)\n\n1. `/home/josie/development/archlinux/s390-arch/notes/beamer-header.tex` -- the project's LaTeX header injected via pandoc `-H`\n2. `/home/josie/development/personal/josiedot/design/beamer/beamercolorthemejosie.sty` -- defines colors (normal text fg = #e0e0e0)\n3. `/home/josie/development/personal/josiedot/design/beamer/beamerfontthemejosie.sty`\n4. `/home/josie/development/personal/josiedot/design/beamer/beamerinnerthemejosie.sty`\n5. `/home/josie/development/personal/josiedot/design/beamer/beamerouterthemejosie.sty`\n6. `/home/josie/development/personal/josiedot/design/beamer/beamerthemejosie.sty`\n\nThen generate the intermediate LaTeX and examine it:\n- Run: `cd /home/josie/development/archlinux/s390-arch/notes && TEXINPUTS=\"/home/josie/development/personal/josiedot/design/beamer/:\" pandoc fosdem-slides.md -d /home/josie/development/personal/josiedot/design/beamer/josie.yaml -H beamer-header.tex -o /tmp/fosdem-debug.tex 2>&1`\n- Read the FULL `/tmp/fosdem-debug.tex` output\n\nAlso run:\n- `pandoc -D beamer` to get the default beamer template -- read it fully, looking for ANYTHING related to overlays, covered, transparent, or color settings\n- `pandoc --version` to know what version we're dealing with\n\n## What to investigate\n\n1. **The `framed` package interaction**: The Shaded environment uses `snugshade` from `framed`. Does `\\color[HTML]{e0e0e0}` inside snugshade leak when the environment ends? The `framed` package is known to have color-leak issues. Check if the color declaration persists after `\\end{snugshade}`.\n\n2. **Fragile frame color state**: In beamer, `[fragile]` frames write content to a temp file and re-read it. Does this break beamer's color state management? Does the normal text fg get properly initialized in fragile frames?\n\n3. **Pandoc template overlay defaults**: Does the pandoc beamer template set `\\setbeamercovered{transparent}` anywhere? Does it set default overlay specifications?\n\n4. **Theme file interference**: Do any of the josie theme .sty files set overlay behavior, covered text behavior, or transparency?\n\n5. **The `\\usebeamercolor[fg]{normal text}` fix**: This was added after `\\end{snugshade}` but didn't fix the issue. Why not? Is it being called? Is it effective in fragile frames?\n\n6. **Color comparison**: The theme sets normal text fg to `josie@text@primary` (#e0e0e0). The Shaded environment also uses `\\color[HTML]{e0e0e0}`. These are the SAME hex value. So if the color leaks, the raw color value is identical. Could the visual difference be caused by something OTHER than a color leak? Maybe opacity, font weight, or some other rendering difference?\n\n7. **Check if beamer applies opacity to covered items even with invisible mode**: Maybe `\\setbeamercovered{invisible}` isn't being respected in fragile frames, and beamer is still applying transparency.\n\nReport ALL findings in detail. I need to understand the exact mechanism causing the visual difference."},"uuid":"b938e227-2fd5-4ced-9ff1-0fc375b6eab0","timestamp":"2026-01-27T23:31:09.471Z"}
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We undo that here.\n     3→\\setsansfont{IBMPlexSans}[\n     4→  Extension = .ttf,\n     5→  Path = /home/josie/.fonts/,\n     6→  UprightFont = *-Regular,\n     7→  BoldFont = *-SemiBold,\n     8→  ItalicFont = *-Italic,\n     9→  BoldItalicFont = *-SemiBoldItalic,\n    10→]\n    11→\\setmainfont{IBMPlexSans}[\n    12→  Extension = .ttf,\n    13→  Path = /home/josie/.fonts/,\n    14→  UprightFont = *-Regular,\n    15→  BoldFont = *-SemiBold,\n    16→  ItalicFont = *-Italic,\n    17→  BoldItalicFont = *-SemiBoldItalic,\n    18→]\n    19→\\setmonofont{IBMPlexMono}[\n    20→  Extension = .ttf,\n    21→  Path = /home/josie/.fonts/,\n    22→  UprightFont = *-Regular,\n    23→  BoldFont = *-SemiBold,\n    24→  ItalicFont = *-Italic,\n    25→  BoldItalicFont = *-SemiBoldItalic,\n    26→  Scale = 0.9,\n    27→]\n    28→\\renewcommand{\\familydefault}{\\sfdefault}\n    29→\n    30→% Dark code blocks\n    31→\\usepackage{framed}\n    32→\\definecolor{shadecolor}{HTML}{2a2a2a}\n    33→\\renewenvironment{Shaded}{%\n    34→  \\begin{snugshade}%\n    35→  \\color[HTML]{e0e0e0}%\n    36→}{%\n    37→  \\end{snugshade}%\n    38→  \\usebeamercolor[fg]{normal text}%\n    39→}\n    40→\n    41→% Syntax highlight tokens for dark background\n    42→\\renewcommand{\\KeywordTok}[1]{\\textcolor[HTML]{7ec8e3}{\\textbf{#1}}}\n    43→\\renewcommand{\\DataTypeTok}[1]{\\textcolor[HTML]{7ec8e3}{#1}}\n    44→\\renewcommand{\\DecValTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n    45→\\renewcommand{\\BaseNTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n    46→\\renewcommand{\\FloatTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n    47→\\renewcommand{\\ConstantTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n    48→\\renewcommand{\\CharTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n    49→\\renewcommand{\\SpecialCharTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n    50→\\renewcommand{\\StringTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n    51→\\renewcommand{\\VerbatimStringTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n    52→\\renewcommand{\\SpecialStringTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n    53→\\renewcommand{\\ImportTok}[1]{\\textcolor[HTML]{7ec8e3}{\\textbf{#1}}}\n    54→\\renewcommand{\\CommentTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n    55→\\renewcommand{\\DocumentationTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n    56→\\renewcommand{\\AnnotationTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n    57→\\renewcommand{\\CommentVarTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n    58→\\renewcommand{\\OtherTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n    59→\\renewcommand{\\FunctionTok}[1]{\\textcolor[HTML]{8aadf4}{#1}}\n    60→\\renewcommand{\\VariableTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n    61→\\renewcommand{\\ControlFlowTok}[1]{\\textcolor[HTML]{c6a0f6}{\\textbf{#1}}}\n    62→\\renewcommand{\\OperatorTok}[1]{\\textcolor[HTML]{a0a0a0}{#1}}\n    63→\\renewcommand{\\BuiltInTok}[1]{\\textcolor[HTML]{7ec8e3}{#1}}\n    64→\\renewcommand{\\ExtensionTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n    65→\\renewcommand{\\PreprocessorTok}[1]{\\textcolor[HTML]{c6a0f6}{#1}}\n    66→\\renewcommand{\\AttributeTok}[1]{\\textcolor[HTML]{7ec8e3}{#1}}\n    67→\\renewcommand{\\RegionMarkerTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n    68→\\renewcommand{\\InformationTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n    69→\\renewcommand{\\WarningTok}[1]{\\textcolor[HTML]{f59e0b}{\\textbf{#1}}}\n    70→\\renewcommand{\\AlertTok}[1]{\\textcolor[HTML]{ef4444}{\\textbf{#1}}}\n    71→\\renewcommand{\\ErrorTok}[1]{\\textcolor[HTML]{ef4444}{\\textbf{#1}}}\n    72→\\renewcommand{\\NormalTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n    73→\n    74→% Brighten tertiary UI elements for contrast on #1a1a1a background\n    75→\\definecolor{uitertiarytext}{HTML}{b0b0b0}\n    76→\\setbeamercolor{itemize item}{fg=uitertiarytext}\n    77→\\setbeamercolor{itemize subitem}{fg=uitertiarytext}\n    78→\\setbeamercolor{itemize subsubitem}{fg=uitertiarytext}\n    79→\\setbeamercolor{enumerate item}{fg=uitertiarytext}\n    80→\\setbeamercolor{enumerate subitem}{fg=uitertiarytext}\n    81→\\setbeamercolor{footline}{fg=uitertiarytext}\n    82→\\setbeamercolor{footnote}{fg=uitertiarytext}\n    83→\\setbeamercolor{footnote mark}{fg=uitertiarytext}\n    84→\\setbeamercolor{author}{fg=uitertiarytext}\n    85→\\setbeamercolor{date}{fg=uitertiarytext}\n    86→\\setbeamercolor{institute}{fg=uitertiarytext}\n    87→\\setbeamercolor{subtitle}{fg=uitertiarytext}\n    88→\n    89→% Hyperlinks visible on dark background (AtBeginDocument to override pandoc's hidelinks)\n    90→\\definecolor{urlblue}{HTML}{8aadf4}\n    91→\\AtBeginDocument{%\n    92→  \\hypersetup{colorlinks=true, urlcolor=urlblue, linkcolor=urlblue}%\n    93→  \\setbeamercovered{invisible}%\n    94→}\n    95→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"97d853ec-1f6f-4c7d-8ecb-9f9acf5fb320","timestamp":"2026-01-27T23:31:14.212Z","sourceToolAssistantUUID":"11f875cf-fce0-4574-bae2-6f910cd90588"}
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{"parentUuid":"a588e954-cb07-44e1-b7c9-1fd9033d85ba","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch/notes","sessionId":"d5eb9b17-ee31-4634-b7b2-132deec4881d","version":"2.1.19","gitBranch":"main","agentId":"a8bceda","slug":"cozy-seeking-catmull","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01UkxBc7XR6Gz3bScJLm1LWX","type":"tool_result","content":"     1→\\mode<presentation>\n     2→\n     3→% --- josiedot design tokens ---\n     4→\n     5→% backgrounds\n     6→\\definecolor{josie@bg@primary}{HTML}{1a1a1a}\n     7→\\definecolor{josie@bg@secondary}{HTML}{2a2a2a}\n     8→\\definecolor{josie@bg@tertiary}{HTML}{404040}\n     9→\n    10→% text\n    11→\\definecolor{josie@text@primary}{HTML}{e0e0e0}\n    12→\\definecolor{josie@text@secondary}{HTML}{a0a0a0}\n    13→\\definecolor{josie@text@tertiary}{HTML}{707070}\n    14→\n    15→% accent\n    16→\\definecolor{josie@accent}{HTML}{ffffff}\n    17→\n    18→% utility\n    19→\\definecolor{josie@success}{HTML}{22c55e}\n    20→\\definecolor{josie@warning}{HTML}{f59e0b}\n    21→\\definecolor{josie@error}{HTML}{ef4444}\n    22→\\definecolor{josie@info}{HTML}{3b82f6}\n    23→\n    24→% --- beamer palette mapping ---\n    25→\n    26→\\setbeamercolor{normal text}{fg=josie@text@primary, bg=josie@bg@primary}\n    27→\\setbeamercolor{alerted text}{fg=josie@error}\n    28→\\setbeamercolor{example text}{fg=josie@info}\n    29→\\setbeamercolor{structure}{fg=josie@text@secondary}\n    30→\n    31→\\setbeamercolor{frametitle}{fg=josie@text@primary, bg=josie@bg@primary}\n    32→\\setbeamercolor{framesubtitle}{fg=josie@text@secondary}\n    33→\n    34→\\setbeamercolor{title}{fg=josie@text@primary}\n    35→\\setbeamercolor{subtitle}{fg=josie@text@secondary}\n    36→\\setbeamercolor{author}{fg=josie@text@tertiary}\n    37→\\setbeamercolor{institute}{fg=josie@text@tertiary}\n    38→\\setbeamercolor{date}{fg=josie@text@tertiary}\n    39→\n    40→\\setbeamercolor{block title}{fg=josie@text@primary, bg=josie@bg@secondary}\n    41→\\setbeamercolor{block body}{fg=josie@text@primary, bg=josie@bg@secondary}\n    42→\n    43→\\setbeamercolor{block title alerted}{fg=josie@error, bg=josie@bg@secondary}\n    44→\\setbeamercolor{block body alerted}{fg=josie@text@primary, bg=josie@bg@secondary}\n    45→\n    46→\\setbeamercolor{block title example}{fg=josie@info, bg=josie@bg@secondary}\n    47→\\setbeamercolor{block body example}{fg=josie@text@primary, bg=josie@bg@secondary}\n    48→\n    49→\\setbeamercolor{itemize item}{fg=josie@text@tertiary}\n    50→\\setbeamercolor{itemize subitem}{fg=josie@text@tertiary}\n    51→\\setbeamercolor{itemize subsubitem}{fg=josie@text@tertiary}\n    52→\\setbeamercolor{enumerate item}{fg=josie@text@tertiary}\n    53→\\setbeamercolor{enumerate subitem}{fg=josie@text@tertiary}\n    54→\n    55→\\setbeamercolor{footnote}{fg=josie@text@tertiary}\n    56→\\setbeamercolor{footnote mark}{fg=josie@text@tertiary}\n    57→\\setbeamercolor{caption name}{fg=josie@text@secondary}\n    58→\n    59→\\setbeamercolor{footline}{fg=josie@text@tertiary, bg=josie@bg@primary}\n    60→\n    61→\\mode<all>\n    62→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"3db047bb-26d1-4f49-b71e-28b9ddc849e2","timestamp":"2026-01-27T23:31:16.688Z","sourceToolAssistantUUID":"a588e954-cb07-44e1-b7c9-1fd9033d85ba"}
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{"parentUuid":"0c82b6f0-2bc6-49e2-83c9-d381135e6531","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch/notes","sessionId":"d5eb9b17-ee31-4634-b7b2-132deec4881d","version":"2.1.19","gitBranch":"main","agentId":"a8bceda","slug":"cozy-seeking-catmull","message":{"model":"claude-haiku-4-5-20251001","id":"msg_019WmWvCMWvaUvJoL22WcBkw","type":"message","role":"assistant","content":[{"type":"text","text":"Now let me generate the intermediate LaTeX and check the pandoc version:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":2862,"cache_creation_input_tokens":4018,"cache_read_input_tokens":18997,"cache_creation":{"ephemeral_5m_input_tokens":4018,"ephemeral_1h_input_tokens":0},"output_tokens":4,"service_tier":"standard"}},"requestId":"req_011CXYkhri4NB6cv1TSX2ifo","type":"assistant","uuid":"c1a49a55-eb8a-449d-b64b-98a23b7a7a9e","timestamp":"2026-01-27T23:31:18.254Z"}
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{"parentUuid":"2b57ffc8-8957-4903-9ea6-3b92f9d896ee","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch/notes","sessionId":"d5eb9b17-ee31-4634-b7b2-132deec4881d","version":"2.1.19","gitBranch":"main","agentId":"a8bceda","slug":"cozy-seeking-catmull","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01VV95TuaTiQJMxvUJExDSDy","type":"tool_result","content":"pandoc 3.5\nFeatures: +server +lua\nScripting engine: Lua 5.4\nUser data directory: /home/josie/.pandoc\nCopyright (C) 2006-2024 John MacFarlane. Web: https://pandoc.org\nThis is free software; see the source for copying conditions. There is no\nwarranty, not even for merchantability or fitness for a particular purpose.","is_error":false}]},"uuid":"3ad66a70-e11b-47f3-b144-0e27048e7a38","timestamp":"2026-01-27T23:31:23.772Z","sourceToolAssistantUUID":"2b57ffc8-8957-4903-9ea6-3b92f9d896ee"}
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{"parentUuid":"0b8b1dbe-b0f6-44fd-8fef-a0b49b512522","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch/notes","sessionId":"d5eb9b17-ee31-4634-b7b2-132deec4881d","version":"2.1.19","gitBranch":"main","agentId":"a8bceda","slug":"cozy-seeking-catmull","message":{"model":"claude-haiku-4-5-20251001","id":"msg_01Jxm1UmafjtXwzxFuih9bpW","type":"message","role":"assistant","content":[{"type":"text","text":"Now let me read the generated LaTeX file and also get the default beamer template from pandoc:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":7,"cache_creation_input_tokens":3406,"cache_read_input_tokens":23015,"cache_creation":{"ephemeral_5m_input_tokens":3406,"ephemeral_1h_input_tokens":0},"output_tokens":1,"service_tier":"standard"}},"requestId":"req_011CXYkiNq3B6ZcmXZLiszVD","type":"assistant","uuid":"82e0eb65-aa74-4c92-bc34-c93079b615e0","timestamp":"2026-01-27T23:31:24.824Z"}
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{"parentUuid":"6e4df914-55ca-4096-80e6-e81da3988ac1","isSidechain":true,"userType":"external","cwd":"/home/josie/development/archlinux/s390-arch/notes","sessionId":"d5eb9b17-ee31-4634-b7b2-132deec4881d","version":"2.1.19","gitBranch":"main","agentId":"a8bceda","slug":"cozy-seeking-catmull","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01JJtsNwzrWCYMkdZSCiMkSe","type":"tool_result","content":"     1→% Options for packages loaded elsewhere\n     2→\\PassOptionsToPackage{unicode}{hyperref}\n     3→\\PassOptionsToPackage{hyphens}{url}\n     4→\\documentclass[\n     5→  ignorenonframetext,\n     6→  aspectratio=169,\n     7→]{beamer}\n     8→\\newif\\ifbibliography\n     9→\\usepackage{pgfpages}\n    10→\\setbeamertemplate{caption}[numbered]\n    11→\\setbeamertemplate{caption label separator}{: }\n    12→\\setbeamercolor{caption name}{fg=normal text.fg}\n    13→\\beamertemplatenavigationsymbolsempty\n    14→% remove section numbering\n    15→\\setbeamertemplate{part page}{\n    16→  \\centering\n    17→  \\begin{beamercolorbox}[sep=16pt,center]{part title}\n    18→    \\usebeamerfont{part title}\\insertpart\\par\n    19→  \\end{beamercolorbox}\n    20→}\n    21→\\setbeamertemplate{section page}{\n    22→  \\centering\n    23→  \\begin{beamercolorbox}[sep=12pt,center]{section title}\n    24→    \\usebeamerfont{section title}\\insertsection\\par\n    25→  \\end{beamercolorbox}\n    26→}\n    27→\\setbeamertemplate{subsection page}{\n    28→  \\centering\n    29→  \\begin{beamercolorbox}[sep=8pt,center]{subsection title}\n    30→    \\usebeamerfont{subsection title}\\insertsubsection\\par\n    31→  \\end{beamercolorbox}\n    32→}\n    33→\\usetheme[]{josie}\n    34→\\usecolortheme[]{josie}\n    35→\\usefonttheme[]{josie}\n    36→\\useinnertheme[]{josie}\n    37→\\useoutertheme[]{josie}\n    38→% Prevent slide breaks in the middle of a paragraph\n    39→\\widowpenalties 1 10000\n    40→\\raggedbottom\n    41→\\AtBeginPart{\n    42→  \\frame{\\partpage}\n    43→}\n    44→\\AtBeginSection{\n    45→  \\ifbibliography\n    46→  \\else\n    47→    \\frame{\\sectionpage}\n    48→  \\fi\n    49→}\n    50→\\AtBeginSubsection{\n    51→  \\frame{\\subsectionpage}\n    52→}\n    53→\\usepackage{iftex}\n    54→\\ifPDFTeX\n    55→  \\usepackage[T1]{fontenc}\n    56→  \\usepackage[utf8]{inputenc}\n    57→  \\usepackage{textcomp} % provide euro and other symbols\n    58→\\else % if luatex or xetex\n    59→  \\usepackage{unicode-math} % this also loads fontspec\n    60→  \\defaultfontfeatures{Scale=MatchLowercase}\n    61→  \\defaultfontfeatures[\\rmfamily]{Ligatures=TeX,Scale=1}\n    62→\\fi\n    63→\\usepackage{lmodern}\n    64→\\ifPDFTeX\\else\n    65→  % xetex/luatex font selection\n    66→\\fi\n    67→% Use upquote if available, for straight quotes in verbatim environments\n    68→\\IfFileExists{upquote.sty}{\\usepackage{upquote}}{}\n    69→\\IfFileExists{microtype.sty}{% use microtype if available\n    70→  \\usepackage[]{microtype}\n    71→  \\UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts\n    72→}{}\n    73→\\makeatletter\n    74→\\@ifundefined{KOMAClassName}{% if non-KOMA class\n    75→  \\IfFileExists{parskip.sty}{%\n    76→    \\usepackage{parskip}\n    77→  }{% else\n    78→    \\setlength{\\parindent}{0pt}\n    79→    \\setlength{\\parskip}{6pt plus 2pt minus 1pt}}\n    80→}{% if KOMA class\n    81→  \\KOMAoptions{parskip=half}}\n    82→\\makeatother\n    83→\\usepackage{color}\n    84→\\usepackage{fancyvrb}\n    85→\\newcommand{\\VerbBar}{|}\n    86→\\newcommand{\\VERB}{\\Verb[commandchars=\\\\\\{\\}]}\n    87→\\DefineVerbatimEnvironment{Highlighting}{Verbatim}{commandchars=\\\\\\{\\}}\n    88→% Add ',fontsize=\\small' for more characters per line\n    89→\\newenvironment{Shaded}{}{}\n    90→\\newcommand{\\AlertTok}[1]{\\textcolor[rgb]{1.00,0.00,0.00}{\\textbf{#1}}}\n    91→\\newcommand{\\AnnotationTok}[1]{\\textcolor[rgb]{0.38,0.63,0.69}{\\textbf{\\textit{#1}}}}\n    92→\\newcommand{\\AttributeTok}[1]{\\textcolor[rgb]{0.49,0.56,0.16}{#1}}\n    93→\\newcommand{\\BaseNTok}[1]{\\textcolor[rgb]{0.25,0.63,0.44}{#1}}\n    94→\\newcommand{\\BuiltInTok}[1]{\\textcolor[rgb]{0.00,0.50,0.00}{#1}}\n    95→\\newcommand{\\CharTok}[1]{\\textcolor[rgb]{0.25,0.44,0.63}{#1}}\n    96→\\newcommand{\\CommentTok}[1]{\\textcolor[rgb]{0.38,0.63,0.69}{\\textit{#1}}}\n    97→\\newcommand{\\CommentVarTok}[1]{\\textcolor[rgb]{0.38,0.63,0.69}{\\textbf{\\textit{#1}}}}\n    98→\\newcommand{\\ConstantTok}[1]{\\textcolor[rgb]{0.53,0.00,0.00}{#1}}\n    99→\\newcommand{\\ControlFlowTok}[1]{\\textcolor[rgb]{0.00,0.44,0.13}{\\textbf{#1}}}\n   100→\\newcommand{\\DataTypeTok}[1]{\\textcolor[rgb]{0.56,0.13,0.00}{#1}}\n   101→\\newcommand{\\DecValTok}[1]{\\textcolor[rgb]{0.25,0.63,0.44}{#1}}\n   102→\\newcommand{\\DocumentationTok}[1]{\\textcolor[rgb]{0.73,0.13,0.13}{\\textit{#1}}}\n   103→\\newcommand{\\ErrorTok}[1]{\\textcolor[rgb]{1.00,0.00,0.00}{\\textbf{#1}}}\n   104→\\newcommand{\\ExtensionTok}[1]{#1}\n   105→\\newcommand{\\FloatTok}[1]{\\textcolor[rgb]{0.25,0.63,0.44}{#1}}\n   106→\\newcommand{\\FunctionTok}[1]{\\textcolor[rgb]{0.02,0.16,0.49}{#1}}\n   107→\\newcommand{\\ImportTok}[1]{\\textcolor[rgb]{0.00,0.50,0.00}{\\textbf{#1}}}\n   108→\\newcommand{\\InformationTok}[1]{\\textcolor[rgb]{0.38,0.63,0.69}{\\textbf{\\textit{#1}}}}\n   109→\\newcommand{\\KeywordTok}[1]{\\textcolor[rgb]{0.00,0.44,0.13}{\\textbf{#1}}}\n   110→\\newcommand{\\NormalTok}[1]{#1}\n   111→\\newcommand{\\OperatorTok}[1]{\\textcolor[rgb]{0.40,0.40,0.40}{#1}}\n   112→\\newcommand{\\OtherTok}[1]{\\textcolor[rgb]{0.00,0.44,0.13}{#1}}\n   113→\\newcommand{\\PreprocessorTok}[1]{\\textcolor[rgb]{0.74,0.48,0.00}{#1}}\n   114→\\newcommand{\\RegionMarkerTok}[1]{#1}\n   115→\\newcommand{\\SpecialCharTok}[1]{\\textcolor[rgb]{0.25,0.44,0.63}{#1}}\n   116→\\newcommand{\\SpecialStringTok}[1]{\\textcolor[rgb]{0.73,0.40,0.53}{#1}}\n   117→\\newcommand{\\StringTok}[1]{\\textcolor[rgb]{0.25,0.44,0.63}{#1}}\n   118→\\newcommand{\\VariableTok}[1]{\\textcolor[rgb]{0.10,0.09,0.49}{#1}}\n   119→\\newcommand{\\VerbatimStringTok}[1]{\\textcolor[rgb]{0.25,0.44,0.63}{#1}}\n   120→\\newcommand{\\WarningTok}[1]{\\textcolor[rgb]{0.38,0.63,0.69}{\\textbf{\\textit{#1}}}}\n   121→\\usepackage{graphicx}\n   122→\\makeatletter\n   123→\\newsavebox\\pandoc@box\n   124→\\newcommand*\\pandocbounded[1]{% scales image to fit in text height/width\n   125→  \\sbox\\pandoc@box{#1}%\n   126→  \\Gscale@div\\@tempa{\\textheight}{\\dimexpr\\ht\\pandoc@box+\\dp\\pandoc@box\\relax}%\n   127→  \\Gscale@div\\@tempb{\\linewidth}{\\wd\\pandoc@box}%\n   128→  \\ifdim\\@tempb\\p@<\\@tempa\\p@\\let\\@tempa\\@tempb\\fi% select the smaller of both\n   129→  \\ifdim\\@tempa\\p@<\\p@\\scalebox{\\@tempa}{\\usebox\\pandoc@box}%\n   130→  \\else\\usebox{\\pandoc@box}%\n   131→  \\fi%\n   132→}\n   133→% Set default figure placement to htbp\n   134→\\def\\fps@figure{htbp}\n   135→\\makeatother\n   136→\\setlength{\\emergencystretch}{3em} % prevent overfull lines\n   137→\\providecommand{\\tightlist}{%\n   138→  \\setlength{\\itemsep}{0pt}\\setlength{\\parskip}{0pt}}\n   139→% Force pandoc's lmodern out -- fontspec is loaded by unicode-math on line 59,\n   140→% then lmodern overrides everything on line 63. We undo that here.\n   141→\\setsansfont{IBMPlexSans}[\n   142→  Extension = .ttf,\n   143→  Path = /home/josie/.fonts/,\n   144→  UprightFont = *-Regular,\n   145→  BoldFont = *-SemiBold,\n   146→  ItalicFont = *-Italic,\n   147→  BoldItalicFont = *-SemiBoldItalic,\n   148→]\n   149→\\setmainfont{IBMPlexSans}[\n   150→  Extension = .ttf,\n   151→  Path = /home/josie/.fonts/,\n   152→  UprightFont = *-Regular,\n   153→  BoldFont = *-SemiBold,\n   154→  ItalicFont = *-Italic,\n   155→  BoldItalicFont = *-SemiBoldItalic,\n   156→]\n   157→\\setmonofont{IBMPlexMono}[\n   158→  Extension = .ttf,\n   159→  Path = /home/josie/.fonts/,\n   160→  UprightFont = *-Regular,\n   161→  BoldFont = *-SemiBold,\n   162→  ItalicFont = *-Italic,\n   163→  BoldItalicFont = *-SemiBoldItalic,\n   164→  Scale = 0.9,\n   165→]\n   166→\\renewcommand{\\familydefault}{\\sfdefault}\n   167→\n   168→% Dark code blocks\n   169→\\usepackage{framed}\n   170→\\definecolor{shadecolor}{HTML}{2a2a2a}\n   171→\\renewenvironment{Shaded}{%\n   172→  \\begin{snugshade}%\n   173→  \\color[HTML]{e0e0e0}%\n   174→}{%\n   175→  \\end{snugshade}%\n   176→  \\usebeamercolor[fg]{normal text}%\n   177→}\n   178→\n   179→% Syntax highlight tokens for dark background\n   180→\\renewcommand{\\KeywordTok}[1]{\\textcolor[HTML]{7ec8e3}{\\textbf{#1}}}\n   181→\\renewcommand{\\DataTypeTok}[1]{\\textcolor[HTML]{7ec8e3}{#1}}\n   182→\\renewcommand{\\DecValTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n   183→\\renewcommand{\\BaseNTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n   184→\\renewcommand{\\FloatTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n   185→\\renewcommand{\\ConstantTok}[1]{\\textcolor[HTML]{f5a97f}{#1}}\n   186→\\renewcommand{\\CharTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n   187→\\renewcommand{\\SpecialCharTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n   188→\\renewcommand{\\StringTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n   189→\\renewcommand{\\VerbatimStringTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n   190→\\renewcommand{\\SpecialStringTok}[1]{\\textcolor[HTML]{a6da95}{#1}}\n   191→\\renewcommand{\\ImportTok}[1]{\\textcolor[HTML]{7ec8e3}{\\textbf{#1}}}\n   192→\\renewcommand{\\CommentTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n   193→\\renewcommand{\\DocumentationTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n   194→\\renewcommand{\\AnnotationTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n   195→\\renewcommand{\\CommentVarTok}[1]{\\textcolor[HTML]{909090}{\\textit{#1}}}\n   196→\\renewcommand{\\OtherTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n   197→\\renewcommand{\\FunctionTok}[1]{\\textcolor[HTML]{8aadf4}{#1}}\n   198→\\renewcommand{\\VariableTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n   199→\\renewcommand{\\ControlFlowTok}[1]{\\textcolor[HTML]{c6a0f6}{\\textbf{#1}}}\n   200→\\renewcommand{\\OperatorTok}[1]{\\textcolor[HTML]{a0a0a0}{#1}}\n   201→\\renewcommand{\\BuiltInTok}[1]{\\textcolor[HTML]{7ec8e3}{#1}}\n   202→\\renewcommand{\\ExtensionTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n   203→\\renewcommand{\\PreprocessorTok}[1]{\\textcolor[HTML]{c6a0f6}{#1}}\n   204→\\renewcommand{\\AttributeTok}[1]{\\textcolor[HTML]{7ec8e3}{#1}}\n   205→\\renewcommand{\\RegionMarkerTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n   206→\\renewcommand{\\InformationTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n   207→\\renewcommand{\\WarningTok}[1]{\\textcolor[HTML]{f59e0b}{\\textbf{#1}}}\n   208→\\renewcommand{\\AlertTok}[1]{\\textcolor[HTML]{ef4444}{\\textbf{#1}}}\n   209→\\renewcommand{\\ErrorTok}[1]{\\textcolor[HTML]{ef4444}{\\textbf{#1}}}\n   210→\\renewcommand{\\NormalTok}[1]{\\textcolor[HTML]{e0e0e0}{#1}}\n   211→\n   212→% Brighten tertiary UI elements for contrast on #1a1a1a background\n   213→\\definecolor{uitertiarytext}{HTML}{b0b0b0}\n   214→\\setbeamercolor{itemize item}{fg=uitertiarytext}\n   215→\\setbeamercolor{itemize subitem}{fg=uitertiarytext}\n   216→\\setbeamercolor{itemize subsubitem}{fg=uitertiarytext}\n   217→\\setbeamercolor{enumerate item}{fg=uitertiarytext}\n   218→\\setbeamercolor{enumerate subitem}{fg=uitertiarytext}\n   219→\\setbeamercolor{footline}{fg=uitertiarytext}\n   220→\\setbeamercolor{footnote}{fg=uitertiarytext}\n   221→\\setbeamercolor{footnote mark}{fg=uitertiarytext}\n   222→\\setbeamercolor{author}{fg=uitertiarytext}\n   223→\\setbeamercolor{date}{fg=uitertiarytext}\n   224→\\setbeamercolor{institute}{fg=uitertiarytext}\n   225→\\setbeamercolor{subtitle}{fg=uitertiarytext}\n   226→\n   227→% Hyperlinks visible on dark background (AtBeginDocument to override pandoc's hidelinks)\n   228→\\definecolor{urlblue}{HTML}{8aadf4}\n   229→\\AtBeginDocument{%\n   230→  \\hypersetup{colorlinks=true, urlcolor=urlblue, linkcolor=urlblue}%\n   231→  \\setbeamercovered{invisible}%\n   232→}\n   233→\\usepackage{bookmark}\n   234→\\IfFileExists{xurl.sty}{\\usepackage{xurl}}{} % add URL line breaks if available\n   235→\\urlstyle{same}\n   236→\\hypersetup{\n   237→  pdftitle={my mainframe runs arch btw},\n   238→  pdfauthor={Josephine Pfeiffer},\n   239→  hidelinks,\n   240→  pdfcreator={LaTeX via pandoc}}\n   241→\n   242→\\title{my mainframe runs arch btw}\n   243→\\subtitle{porting Arch Linux to IBM s390x}\n   244→\\author{Josephine Pfeiffer}\n   245→\\date{FOSDEM 2026}\n   246→\n   247→\\begin{document}\n   248→\\frame{\\titlepage}\n   249→\n   250→\\begin{frame}{the premise}\n   251→\\phantomsection\\label{the-premise}\n   252→I use Arch btw.\n   253→\n   254→\\pause\n   255→\n   256→on an IBM mainframe.\n   257→\n   258→\\pause\n   259→\n   260→an architecture lineage from 1964.\n   261→\\end{frame}\n   262→\n   263→\\begin{frame}{s390x in 30 seconds}\n   264→\\phantomsection\\label{s390x-in-30-seconds}\n   265→\\begin{itemize}\n   266→\\tightlist\n   267→\\item\n   268→  IBM Z / IBM LinuxONE\n   269→\\item\n   270→  64-bit big-endian\n   271→\\item\n   272→  boots via \\textbf{IPL}\n   273→\\item\n   274→  your bank runs on this\n   275→\\end{itemize}\n   276→\\end{frame}\n   277→\n   278→\\begin{frame}{``why?''}\n   279→\\phantomsection\\label{why}\n   280→\\end{frame}\n   281→\n   282→\\begin{frame}{``why?''}\n   283→\\phantomsection\\label{why-1}\n   284→I thought it would be funny :p\n   285→\\end{frame}\n   286→\n   287→\\begin{frame}{the problem}\n   288→\\phantomsection\\label{the-problem}\n   289→Arch Linux assumes you build entirely on the target architecture.\n   290→\n   291→\\pause\n   292→\n   293→I do not own a mainframe.\n   294→\n   295→\\pause\n   296→\n   297→(but I have access to one)\n   298→\n   299→\\includegraphics[width=\\linewidth,height=0.45\\textheight,keepaspectratio]{diagrams/mainframe.jpeg}\n   300→\\end{frame}\n   301→\n   302→\\begin{frame}{the solution: a hybrid build}\n   303→\\phantomsection\\label{the-solution-a-hybrid-build}\n   304→\\includegraphics[width=\\linewidth,height=0.8\\textheight,keepaspectratio]{diagrams/hybrid-build.png}\n   305→\\end{frame}\n   306→\n   307→\\begin{frame}[fragile]{step 1: the kernel}\n   308→\\phantomsection\\label{step-1-the-kernel}\n   309→cross-compile with \\texttt{s390x-linux-gnu-gcc} in a Fedora container.\n   310→\n   311→\\begin{Shaded}\n   312→\\begin{Highlighting}[]\n   313→\\FunctionTok{make}\\NormalTok{ ARCH=s390 CROSS\\_COMPILE=s390x{-}linux{-}gnu{-} }\\DataTypeTok{\\textbackslash{}}\n   314→     \\AttributeTok{{-}j}\\VariableTok{$(}\\FunctionTok{nproc}\\VariableTok{)}\\NormalTok{ bzImage modules}\n   315→\\end{Highlighting}\n   316→\\end{Shaded}\n   317→\n   318→this part actually works fine.\n   319→\n   320→\\pause\n   321→\n   322→this is the last time I will say that.\n   323→\\end{frame}\n   324→\n   325→\\begin{frame}[fragile]{step 2: busybox}\n   326→\\phantomsection\\label{step-2-busybox}\n   327→busybox must be statically linked for the initramfs.\n   328→\n   329→\\pause\n   330→\n   331→reliably static-linking s390x binaries requires native compilation.\n   332→\n   333→\\pause\n   334→\n   335→you need a real mainframe.\n   336→\n   337→\\begin{Shaded}\n   338→\\begin{Highlighting}[]\n   339→\\ExtensionTok{$}\\NormalTok{ ssh mainframe}\n   340→\\ExtensionTok{$}\\NormalTok{ make CONFIG\\_STATIC=y}\n   341→\\ExtensionTok{$}\\NormalTok{ scp busybox{-}s390x{-}static laptop:boot/}\n   342→\\end{Highlighting}\n   343→\\end{Shaded}\n   344→\n   345→2.3 MB. 60+ applets. built on hardware worth more than my apartment.\n   346→\n   347→\\note{busybox is a single binary that provides stripped-down\n   348→implementations of common Unix utilities (sh, cp, mount, etc). It\n   349→replaces coreutils, util-linux, and a shell in a single\n   350→statically-linked binary. The initramfs needs these tools before the\n   351→real root filesystem is mounted, and busybox is the standard way to\n   352→provide them in a minimal footprint. The ``ash'' applet in the later\n   353→slide is busybox's Almquist shell implementation -- the shell that runs\n   354→as /bin/sh in early boot.}\n   355→\\end{frame}\n   356→\n   357→\\begin{frame}[fragile]{step 3: mkinitcpio}\n   358→\\phantomsection\\label{step-3-mkinitcpio}\n   359→Arch's initramfs generator assumes it can \\emph{run} the binaries it\n   360→packs.\n   361→\n   362→\\pause\n   363→\n   364→it cannot run s390x binaries on x86\\_64.\n   365→\n   366→\\pause\n   367→\n   368→\\begin{Shaded}\n   369→\\begin{Highlighting}[]\n   370→\\CommentTok{\\# Can\\textquotesingle{}t do this on x86\\_64:}\n   371→\\ExtensionTok{busybox} \\AttributeTok{{-}{-}list}\n   372→\\CommentTok{\\# So instead: hardcode all 60+ applet names}\n   373→\\BuiltInTok{local} \\VariableTok{busybox\\_applets}\\OperatorTok{=}\\VariableTok{(}\n   374→    \\StringTok{\"[\"} \\StringTok{\"[[\"} \\StringTok{\"ash\"} \\StringTok{\"awk\"} \\StringTok{\"basename\"} \\StringTok{\"cat\"}\n   375→    \\StringTok{\"chmod\"} \\StringTok{\"cp\"} \\StringTok{\"dd\"} \\StringTok{\"df\"} \\StringTok{\"echo\"} \\StringTok{\"env\"}\n   376→    \\CommentTok{\\# ... 50 more lines of this}\n   377→\\VariableTok{)}\n   378→\\end{Highlighting}\n   379→\\end{Shaded}\n   380→\\end{frame}\n   381→\n   382→\\begin{frame}[fragile]{step 4: the CONFIG\\_UNIX incident}\n   383→\\phantomsection\\label{step-4-the-config_unix-incident}\n   384→systemd boots. systemd immediately dies.\n   385→\n   386→\\pause\n   387→\n   388→hours later:\n   389→\n   390→\\begin{Shaded}\n   391→\\begin{Highlighting}[]\n   392→\\VariableTok{CONFIG\\_UNIX}\\OperatorTok{=}\\NormalTok{y}\n   393→\\CommentTok{\\# AF\\_UNIX sockets. systemd needs these.}\n   394→\\end{Highlighting}\n   395→\\end{Shaded}\n   396→\\end{frame}\n   397→\n   398→\\begin{frame}{the boot sequence}\n   399→\\phantomsection\\label{the-boot-sequence}\n   400→\\includegraphics[width=1\\linewidth,height=\\textheight,keepaspectratio]{diagrams/boot-sequence.png}\n   401→\n   402→total system image: \\textbf{11 MB} -- smaller than most Electron apps.\n   403→\\end{frame}\n   404→\n   405→\\begin{frame}[fragile]{it works}\n   406→\\phantomsection\\label{it-works}\n   407→\\begin{Shaded}\n   408→\\begin{Highlighting}[]\n   409→\\ExtensionTok{$}\\NormalTok{ uname }\\AttributeTok{{-}a}\n   410→\\ExtensionTok{Linux}\\NormalTok{ archlinux 6.18.6{-}arch1{-}1{-}s390x }\\CommentTok{\\#1 SMP s390x GNU/Linux}\n   411→\n   412→\\ExtensionTok{$}\\NormalTok{ cat /etc/os{-}release}\n   413→\\VariableTok{NAME}\\OperatorTok{=}\\StringTok{\"Arch Linux\"}\n   414→\\VariableTok{PRETTY\\_NAME}\\OperatorTok{=}\\StringTok{\"Arch Linux\"}\n   415→\n   416→\\ExtensionTok{$}\\NormalTok{ busybox }\\KeywordTok{|} \\FunctionTok{head} \\AttributeTok{{-}1}\n   417→\\ExtensionTok{BusyBox}\\NormalTok{ v1.37.0 }\\ErrorTok{(}\\ExtensionTok{s390x}\\KeywordTok{)} \\ExtensionTok{multi{-}call}\\NormalTok{ binary.}\n   418→\n   419→\\ExtensionTok{$}\\NormalTok{ systemctl status}\n   420→  \\ExtensionTok{State:}\\NormalTok{ running}\n   421→  \\ExtensionTok{Units:}\\NormalTok{ 12 loaded}\n   422→\\end{Highlighting}\n   423→\\end{Shaded}\n   424→\\end{frame}\n   425→\n   426→\\begin{frame}[fragile]{what I learned}\n   427→\\phantomsection\\label{what-i-learned}\n   428→\\begin{itemize}\n   429→\\tightlist\n   430→\\item\n   431→  cross-compilation has hard limits -- sometimes you need the real\n   432→  hardware\n   433→\\item\n   434→  distribution tooling has architecture assumptions everywhere\n   435→\\item\n   436→  \\texttt{CONFIG\\_UNIX=y}\n   437→\\item\n   438→  the s390x boot process is fascinating and completely alien\n   439→\\end{itemize}\n   440→\\end{frame}\n   441→\n   442→\\begin{frame}{Arch Linux on s390x}\n   443→\\phantomsection\\label{arch-linux-on-s390x}\n   444→\\textbf{working today:}\n   445→\n   446→\\begin{itemize}\n   447→\\tightlist\n   448→\\item\n   449→  kernel, initramfs, busybox, systemd\n   450→\\item\n   451→  full boot to systemd shell\n   452→\\item\n   453→  QEMU emulation + real z/VM hardware\n   454→\\end{itemize}\n   455→\n   456→\\textbf{next:}\n   457→\n   458→\\begin{itemize}\n   459→\\tightlist\n   460→\\item\n   461→  pacman and makepkg for s390x\n   462→\\item\n   463→  pacstrap and base packages\n   464→\\item\n   465→  convince the Arch community this is not a joke\n   466→\\end{itemize}\n   467→\\end{frame}\n   468→\n   469→\\begin{frame}{thank you}\n   470→\\phantomsection\\label{thank-you}\n   471→github.com/pfeifferj/archlinux-s390x\n   472→\\end{frame}\n   473→\n   474→\\end{document}\n   475→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"uuid":"097c44f3-cea2-4261-ae77-8446bc8e5bd5","timestamp":"2026-01-27T23:31:26.513Z","sourceToolAssistantUUID":"6e4df914-55ca-4096-80e6-e81da3988ac1"}
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