name: Nix
on:
  push:
    branches:
      - master
  pull_request:
  workflow_dispatch:
  schedule:
    # Run once per day
    - cron: '0 0 * * *'
jobs:
  build:
    strategy:
      # Keep building the other channels if one fails
      fail-fast: false
      matrix:
        channel:
          - nixos-unstable
          - nixos-20.09
          - nixos-20.03
          - nixos-21.05
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - uses: cachix/install-nix-action@v15
      - run: nix-shell --run ./ci.sh
        env:
          CI_REGISTRY_AUTH: '${{ secrets.REGISTRY_AUTH }}'
          NIXPKGS_CHANNEL: '${{ matrix.channel }}'