on:
  push:
    branches: [main]
  schedule:
    - cron: 37 4 * * *

jobs:
  build:
    runs-on: macos-latest
    steps:
      - name: Install SSH Key
        uses: shimataro/ssh-key-action@d4fffb50872869abe2d9a9098a6d9c5aa7d16be4
        with:
          # SSH private key
          key: ${{ secrets.SSH_KEY_NIXREMOTE }}
          name: id_ed25519
          known_hosts: |
            linde.alanpearce.eu ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHHdh3J7dEmh9G+CVmzFEC8/ont35ZXpCFcpLUO863vC
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install Nix
        uses: cachix/install-nix-action@v26
        with:
          nix_path: nixpkgs=channel:nixos-unstable
      - name: Check evaluation
        run: |
          nix-env -f . -qa \* --meta --xml \
            --allowed-uris https://static.rust-lang.org \
            --option restrict-eval true \
            --option allow-import-from-derivation true \
            --drv-path --show-trace \
            -I nixpkgs=$(nix-instantiate --find-file nixpkgs) \
            -I $PWD
      - name: Show nixpkgs version
        run: nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
      - name: Build nix packages
        run: nix shell -f '<nixpkgs>' nix-build-uncached -c nix-build-uncached ci.nix -A cacheOutputs
      - name: Populate binary cache
        run: nix copy --substitute-on-destination --to ssh://nixremote@linde.alanpearce.eu .