name: Setup Nix

description: Installs nix, sets up cachix and installs a subset of tooling.

inputs:
  authToken:
    description: Token to pass to cachix
  tools:
    description: Tools to install with nix-env -iA <tools>

runs:
  using: composite
  steps:
    - uses: nixbuild/nix-quick-install-action@1f095fee853b33114486cfdeae62fa099cda35a9 # v33
      with:
        nix_conf: |-
          always-allow-substitutes = true
          max-jobs = auto
    - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
      with:
        name: postgrest
        authToken: ${{ inputs.authToken }}
        skipPush: ${{ inputs.authToken == '' }}
    - if: ${{ inputs.tools }}
      run: nix-env -f default.nix -iA ${{ inputs.tools }}
      shell: bash