name: "mach-nix CI"

on:
  pull_request:
    branches: ["master"]
  push:
    branches: [master, dev, "ci*" ]

jobs:

## tasks per matrix element
  nixVersion:
    name: Test Nix version - ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, ]
        python-version: [3.7]
    steps:

    - uses: actions/checkout@v2
      with:
        fetch-depth: 1

    - name: Install/Setup - NIX
      uses: cachix/install-nix-action@v13
      with:
        nix_path: nixpkgs=channel:nixos-unstable
        install_url: https://github.com/numtide/nix-flakes-installer/releases/download/nix-2.4pre20201221_9fab14a/install
        extra_nix_config: |
          experimental-features = nix-command flakes
          sandbox = true
          sandbox-fallback = false

    - name: nix-env installation
      run: nix-env -if . -A mach-nix
      shell: bash

    - name: cli test
      run: |
        export MACHNIX_VERSION=$GITHUB_SHA
        mach-nix --version
        echo "tensorflow" > reqs.txt
        mach-nix env ./env -r reqs.txt
      shell: bash

    - name: mach-nix evaluation tests
      run: |
        wget https://github.com/DavHau/nix-portable/releases/download/v008/nix-portable
        chmod +x nix-portable
        WORKERS=5 ./nix-portable nix run .#tests-all
      shell: bash