---
image: nixpkgs/nix-flakes:latest

variables:
  NIX_PATH: "nixpkgs=channel:nixpkgs-unstable"

before_script:
  - nix --version
  - nix flake metadata

stages:
  - info
  - check
  - cachix

info:
  stage: info
  script:
    - env
    - nix show-config
    - nix show-derivation

check:
  stage: check
  script:
    - nix flake check --show-trace
  allow_failure: true

cachix:
  stage: cachix
  script:
    - set -o pipefail
    - nix build --print-build-logs --show-trace --json |
      nix shell nixpkgs#jq
      --command jq -r '.[].outputs | to_entries[].value' |
      nix shell nixpkgs#cachix
      --command cachix push $CACHIX_CACHE_NAME
  artifacts:
    paths:
      - result
    expire_in: 1 week
    when: on_success