[RFC 140] Simple package paths, part 1b: Enabling the directory structure #3
Workflow file for this run
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# Checks pkgs/by-name (see pkgs/by-name/README.md) | |
# using the nixpkgs-check-by-name tool (see pkgs/test/nixpkgs-check-by-name) | |
name: Check pkgs/by-name | |
# The pre-built tool is fetched from a channel, | |
# making it work predictable on all PRs | |
on: pull_request | |
# The tool doesn't need any permissions, it only outputs success or not based on the checkout | |
permissions: {} | |
jobs: | |
check: | |
# This is x86_64-linux, for which the tool is always prebuilt on the nixos-* channels, | |
# as specified in nixos/release-combined.nix | |
runs-on: ubuntu-latest | |
steps: | |
- uses: actions/checkout@v3 | |
- uses: cachix/install-nix-action@v22 | |
- name: Determining channel to use for dependencies | |
run: | | |
echo "Determining which channel to use for PR base branch $GITHUB_BASE_REF" | |
if [[ "$GITHUB_BASE_REF" =~ ^(release|staging|staging-next)-([0-9][0-9]\.[0-9][0-9])$ ]]; then | |
# Use the release channel for all PRs to release-XX.YY, staging-XX.YY and staging-next-XX.YY | |
channel=nixos-${BASH_REMATCH[2]} | |
echo "PR is for a release branch, using release channel $channel" | |
else | |
# Use the nixos-unstable channel for all other PRs | |
channel=nixos-unstable | |
echo "PR is for a non-release branch, using unstable channel $channel" | |
fi | |
echo "channel=$channel" >> "$GITHUB_ENV" | |
- name: Fetching latest version of channel | |
run: | | |
echo "Fetching latest version of channel $channel" | |
# This is probably the easiest way to get Nix to output the path to a downloaded channel! | |
nixpkgs=$(nix-instantiate --find-file nixpkgs -I nixpkgs=channel:"$channel") | |
# This file only exists in channels | |
rev=$(<"$nixpkgs"/.git-revision) | |
echo "Channel $channel is at revision $rev" | |
echo "nixpkgs=$nixpkgs" >> "$GITHUB_ENV" | |
echo "rev=$rev" >> "$GITHUB_ENV" | |
- name: Fetching pre-built nixpkgs-check-by-name from the channel | |
run: | | |
echo "Fetching pre-built nixpkgs-check-by-name from channel $channel at revision $rev" | |
# Passing --max-jobs 0 makes sure that we won't build anything | |
nix-build "$nixpkgs" -A tests.nixpkgs-check-by-name --max-jobs 0 | |
- name: Running nixpkgs-check-by-name | |
run: result/bin/nixpkgs-check-by-name . |