build_tree.yml

name: "Build tree"

on:
  repository_dispatch:
    types: [trigger-workflow]

jobs:
  build-tree:
    runs-on: ${{ matrix.os }}
    permissions:
      id-token: "write"
      contents: "read"
    strategy:
      matrix:
        os: ${{ github.event.client_payload.platforms }}
    steps:
    - uses: actions/checkout@v4
    - uses: DeterminateSystems/nix-installer-action@main
    - uses: DeterminateSystems/magic-nix-cache-action@main

    - name: Access Payload Data
      run: |
          echo "Branch: ${{ github.event.client_payload.ref_name }}"
          echo "Branch: ${{ github.event.client_payload.platforms }}"

    - name: Determine Nix file to use
      id: determine-file
      run: |
          year=$(echo "${{ github.event.client_payload.ref_name }}" | cut -c1-4)
          if [ "$year" -le 2020 ]; then
              echo "nix_file=default_2020.nix" >> $GITHUB_ENV
          else
              echo "nix_file=default.nix" >> $GITHUB_ENV
          fi

    - run:   |
         if [ "$RUNNER_OS" == "Linux" ]; then
              sed -i 's/REPLACE_DATE/${{ github.event.client_payload.ref_name }}/g' ${{ env.nix_file }}
         else
              sed -i '' 's/REPLACE_DATE/${{ github.event.client_payload.ref_name }}/g' ${{ env.nix_file }} 
         fi

    - uses: cachix/cachix-action@v15
      with:
        name: rstats-on-nix
        authToken: '${{ secrets.CACHIX_AUTH }}'
         
    - name: Build on date ${{ github.event.client_payload.ref_name }}
      run:   |
         if [ "$RUNNER_OS" == "Linux" ]; then
              nix-build --max-jobs 1 --cores 2 --argstr system x86_64-linux ${{ env.nix_file }}
              nix-build --max-jobs 1 --cores 2 --argstr system aarch64-linux ${{ env.nix_file }}
         else
              nix-build --max-jobs 1 --cores 2 ${{ env.nix_file }}
         fi