# SPDX-FileCopyrightText: © 2026 Jeffrey C. Ollie <jeff@ocjtech.us>
# SPDX-License-Identifier: MIT

{
  lib,
  stdenv,
  callPackage,
  zig_0_17,
}:
let
  # Generated from build.zig.zon by zon2nix; regenerate with
  #   nix develop -c zon2nix --17 --nix=build.zig.zon.nix build.zig.zon
  zigDeps = callPackage ./build.zig.zon.nix { };
in
stdenv.mkDerivation (finalAttrs: {
  pname = "zig-paperless";
  version = "0.1.0";

  # Named rather than filtered, so that editing something outside this list --
  # the flake, the README, the virtual machine test that consumes the result
  # -- does not rebuild the package and, in the test, the whole machine.
  src = lib.fileset.toSource {
    root = ./.;
    fileset = lib.fileset.unions [
      ./build.zig
      ./build.zig.zon
      ./build.zig.zon.nix
      ./src
      ./tests/client.zig
      ./tests/live.zig
      ./tools
    ];
  };

  nativeBuildInputs = [ zig_0_17.hook ];

  # A Nix build has no network and the Zig package manager wants one, so the
  # dependencies are realised by Nix and handed over as a directory. `--system`
  # forbids fetching outright: a dependency missing from it is a build error
  # naming the package rather than an attempt to reach the network.
  zigBuildFlags = [
    "--system"
    "${zigDeps}"
  ];
  # The check phase assembles its own flags rather than reusing the build's,
  # so without this `zig build test` runs without `--system` and fails in the
  # sandbox.
  zigCheckFlags = finalAttrs.zigBuildFlags;

  # The unit tests are pure and the client tests want only a loopback socket,
  # which the build sandbox has. The tests against a real server are
  # compiled here and run by the flake's `checks`.
  doCheck = true;

  meta = {
    description = "A Zig client for the Paperless-ngx REST API";
    homepage = "https://git.jcollie.dev/jeff/zig-paperless";
    license = lib.licenses.mit;
    mainProgram = "zig-paperless";
    platforms = lib.platforms.unix;
  };
})