2026-01-11

name: 'Guix Environment Setup'
description: 'Export GNU Guix shell environment variables to GITHUB_ENV'
inputs:
  manifest:
    description: 'Path to the Guix manifest file'
    required: true
    default: 'manifest.scm'
  guix-bin:
    description: 'Path to the guix binary'
    required: false
    default: '/var/guix/profiles/per-user/root/current-guix/bin/guix'
  daemon-socket:
    description: 'Guix daemon socket address'
    required: false
    default: 'guix://172.17.0.1'

runs:
  using: "composite"
  steps:
    - name: Export Guix Environment
      shell: bash
      env:
        GUIX_DAEMON_SOCKET: ${{ inputs.daemon-socket }}
      run: |
        ${{ inputs.guix-bin }} shell -m ${{ inputs.manifest }} --search-paths > guix_paths.sh

        while read -r line; do
          if [[ $line == export* ]]; then
            content=${line#export }
            echo "$content" >> $GITHUB_ENV
          fi
        done < guix_paths.sh

        echo "Guix environment variables have been injected into GITHUB_ENV."