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numa/.github/workflows/publish-aur.yml

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# `publish-aur.yml` - Arch Linux AUR Package Workflow
# --------------------
# This workflow automates the validation and publishing of the 'numa-git' package to the
# Arch User Repository (AUR). The AUR is a community-driven repository for Arch Linux users.
#
# Workflow Overview:
# 1. Validate: Builds and tests the package on both x86_64 and aarch64 (ARM64)
# architectures using clean Arch Linux containers.
# 2. Audit: Checks Rust dependencies for known security vulnerabilities using 'cargo-audit'.
# 3. Publish: If on the 'main' branch, it pushes the updated PKGBUILD and .SRCINFO to the AUR.
#
# Security Best Practices:
# - SHA Pinning: All GitHub Actions are pinned to a full-length commit SHA (e.g., v4.1.7 @ SHA)
# to ensure the code is immutable and protects against supply-chain attacks where a tag
# might be maliciously moved to a compromised commit.
# - SSH Hygiene: Uses ssh-agent to keep the private key in memory rather than on disk.
# - Audit: Runs 'cargo audit' to prevent publishing known vulnerable dependencies.
name: Publish - Arch Linux AUR Package
on:
push:
branches: [main]
workflow_dispatch:
permissions:
contents: read
jobs:
# The 'validate' job ensures that the PKGBUILD is correct and the software builds/tests
# successfully on Arch Linux before we attempt to publish it.
validate:
name: Validate PKGBUILD (${{ matrix.arch }})
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
# We test both standard PC (x86_64) and ARM64 (aarch64) architectures.
arch: [x86_64, aarch64]
steps:
- name: Checkout code
uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
# QEMU allows us to run ARM64 containers on x86_64 GitHub runners.
- name: Set up QEMU
if: matrix.arch == 'aarch64'
uses: docker/setup-qemu-action@6882732593b27c7f95a044d559b586a46371a68e # v3.0.0
- name: Build and Test Package
timeout-minutes: 60
env:
AUR_PKGNAME: ${{ secrets.AUR_PACKAGE_NAME }}
run: |
# Select the appropriate Arch Linux image for the architecture.
if [ "${{ matrix.arch }}" = "x86_64" ]; then
IMAGE="archlinux:latest"
else
IMAGE="agners/archlinuxarm:latest"
fi
# We use a temporary directory to avoid Docker permission issues with the workspace.
mkdir -p build-dir
cp PKGBUILD build-dir/
docker run --rm -v $PWD/build-dir:/pkg -w /pkg $IMAGE /bin/bash -c "
# ARCH LINUX SECURITY REQUIREMENT:
# 'makepkg' (the tool that builds Arch packages) refuses to run as root for safety.
# We must create a standard user and give them sudo access.
useradd -m builduser
chown -R builduser:builduser /pkg
# Install build-time dependencies.
# 'base-devel' includes essential tools like gcc, make, and binutils.
pacman -Syu --noconfirm --needed base-devel cargo git sudo cargo-audit
# Allow the build user to install dependencies during the build process.
echo 'builduser ALL=(ALL) NOPASSWD: ALL' > /etc/sudoers.d/builduser
# SECURITY AUDIT:
# Fail early if any dependencies have known security vulnerabilities.
sudo -u builduser cargo audit
# BUILD & TEST:
# 'makepkg -s' will:
# 1. Download source files (cloning this repo)
# 2. Run prepare(), build(), and check() (running cargo test)
# 3. Create the final .pkg.tar.zst package
sudo -u builduser makepkg -s --noconfirm
"
# The 'publish' job updates the AUR repository with our latest PKGBUILD and .SRCINFO.
publish:
name: Publish to AUR
needs: validate
runs-on: ubuntu-latest
if: github.event_name == 'push' && github.ref == 'refs/heads/main'
steps:
- name: Checkout code
uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
# Securely configure SSH for AUR access.
- name: Configure SSH
run: |
mkdir -p ~/.ssh
# Official AUR Ed25519 fingerprint (prevents Man-in-the-Middle attacks).
echo "aur.archlinux.org ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEu46S9S6YfBD5C8GeOBip8Z11+4" >> ~/.ssh/known_hosts
# Use ssh-agent to keep the private key in memory rather than writing it to disk.
eval $(ssh-agent -s)
echo "${{ secrets.AUR_SSH_PRIVATE_KEY }}" | tr -d '\r' | ssh-add -
# Export the agent socket so subsequent 'git' commands can use it.
echo "SSH_AUTH_SOCK=$SSH_AUTH_SOCK" >> $GITHUB_ENV
echo "SSH_AGENT_PID=$SSH_AGENT_PID" >> $GITHUB_ENV
- name: Push to AUR
env:
AUR_PKGNAME: ${{ secrets.AUR_PACKAGE_NAME }}
AUR_EMAIL: ${{ secrets.AUR_EMAIL }}
AUR_USER: ${{ secrets.AUR_USERNAME }}
run: |
# AUR repos are managed via Git. Each package has its own repo at:
# ssh://aur@aur.archlinux.org/<package-name>.git
git clone ssh://aur@aur.archlinux.org/$AUR_PKGNAME.git aur-repo
cp PKGBUILD aur-repo/
cd aur-repo
# METADATA GENERATION:
# '.SRCINFO' is a machine-readable version of the PKGBUILD.
# The AUR website uses this file to display package details like dependencies and version.
# We generate it inside an Arch container to ensure 'makepkg' is available.
docker run --rm -v $(pwd):/pkg archlinux:latest /bin/bash -c "
pacman -Syu --noconfirm --needed binutils git
cd /pkg
git config --global --add safe.directory '*'
makepkg --printsrcinfo > .SRCINFO
"
# Set the commit identity using secrets for security and auditability.
git config user.name "$AUR_USER"
git config user.email "$AUR_EMAIL"
# Stage and commit both the human-readable PKGBUILD and machine-readable .SRCINFO.
git add PKGBUILD .SRCINFO
if ! git diff --cached --quiet; then
git commit -m "chore: update PKGBUILD to ${{ github.sha }}"
git push origin master
else
echo "No changes to commit (metadata and PKGBUILD are already up-to-date)."
fi