on:
  workflow_call:
    secrets:
      CACHIX_KEY:
        required: true

jobs:
  prepare_nix:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.4.0
      - uses: cachix/install-nix-action@v16
        name: Set up Nix and IOHK caches
        with:
          nix_path: nixpkgs=channel:nixos-unstable
          extra_nix_config: |
            trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
            substituters = https://hydra.iohk.io https://iohk.cachix.org https://cache.nixos.org/
            experimental-features = nix-command flakes
      - uses: cachix/cachix-action@v10
        with:
          name: mlabs
          authToken: ${{ secrets.CACHIX_KEY }}