# Nixpkgs overlay for commonscomputing
#
# Overlays modify the global pkgs set. Anything that references
# `pkgs.<name>` (including NixOS service modules using `mkPackageOption`)
# automatically picks up our overrides without further config changes.
#
# Each override below should include a brief note about why we're overriding
# and when the override can be removed (e.g. when nixpkgs catches up).

final: prev: {
  # Override bluesky-pds to v0.4.219 (latest tag in bluesky-social/pds repo).
  #
  # As of 2026-04-26 nixpkgs-unstable ships 0.4.204. The deployed version on
  # z-space (from our pinned flake.lock) is even older at 0.4.182.
  #
  # Notable changes between 0.4.182 and 0.4.219:
  #   - Default PDS_BLOB_UPLOAD_LIMIT doubled to 100 MB (commit cc0e9ac)
  #   - Rate limits enabled by default (PR #308)
  #   - Node bumped to v20.20 (commit 0ef7817)
  #   - pdsadmin account commands replaced with goat (PR #313)
  #
  # Remove this override once nixpkgs ships bluesky-pds >= 0.4.219.
  bluesky-pds = prev.bluesky-pds.overrideAttrs (old: rec {
    version = "0.4.219";

    src = prev.fetchFromGitHub {
      owner = "bluesky-social";
      repo = "pds";
      tag = "v${version}";
      hash = "sha256-zXNg1rtXN9qdTBvRlSiPlRu6k1Pv3T8nhROsEarev5U=";
    };

    sourceRoot = "${src.name}/service";
    patches = [];
    nativeBuildInputs =
      (builtins.filter (pkg: !(builtins.elem (pkg.pname or "") [ "nodejs" "pnpm" ])) old.nativeBuildInputs)
      ++ [ prev.nodejs_22 prev.pnpm_9 ];

    buildPhase = ''
      runHook preBuild

      pushd ./node_modules/.pnpm/better-sqlite3@*/node_modules/better-sqlite3
      npm run build-release --offline --nodedir="${prev.srcOnly prev.nodejs_22}"
      find build -type f -exec remove-references-to -t "${prev.srcOnly prev.nodejs_22}" {} \;
      popd

      makeWrapper "${prev.nodejs_22}/bin/node" "$out/bin/pds" \
        --add-flags --enable-source-maps \
        --add-flags "$out/lib/pds/index.js" \
        --set-default NODE_ENV production

      runHook postBuild
    '';

    installPhase = ''
      runHook preInstall

      mkdir -p $out/{bin,lib/pds}
      mv node_modules $out/lib/pds
      mv index.js $out/lib/pds

      runHook postInstall
    '';

    # pnpmDeps must be re-fetched whenever src changes because pnpm-lock.yaml
    # may have changed. The hash below was computed by running a build with
    # an empty hash and reading the correct one from the build failure.
    pnpmDeps = prev.fetchPnpmDeps {
      pname = "pds";
      inherit version src sourceRoot;
      pnpm = prev.pnpm_9;
      fetcherVersion = 3;
      hash = "sha256-rZpimxX4oDXIaUdAkkNPEff6qYJ9C8KptsPWJKwPiFo=";
    };
  });
}