gotify-server{,.ui}: modernize; remove Go reference (#421071)

pkgs/by-name/go/gotify-server/package.nix

···
   nix-update-script,
 }:
 
-buildGoModule rec {
+buildGoModule (finalAttrs: {
   pname = "gotify-server";
   version = "2.6.3";
 
   src = fetchFromGitHub {
     owner = "gotify";
     repo = "server";
-    rev = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-9vIReA29dWf3QwUYEW8JhzF9o74JZqG4zGobgI+gIWE=";
   };
 
-  # With `allowGoReference = true;`, `buildGoModule` adds the `-trimpath`
-  # argument for Go builds which apparently breaks the UI like this:
-  #
-  #   server[780]: stat /var/lib/private/ui/build/index.html: no such file or directory
-  allowGoReference = true;
-
   vendorHash = "sha256-rs6EfnJT6Jgif2TR5u5Tp5/Ozn+4uhSapksyKFnQiCo=";
 
+  # No test
   doCheck = false;
 
   buildInputs = [
     sqlite
   ];
 
-  ui = callPackage ./ui.nix { };
+  ui = callPackage ./ui.nix { inherit (finalAttrs) src version; };
 
-  preBuild = ''
-    if [ -n "$ui" ] # to make the preBuild a no-op inside the goModules fixed-output derivation, where it would fail
-    then
-      cp -r $ui ui/build
-    fi
+  # Use preConfigure instead of preBuild to keep goModules independent from ui
+  preConfigure = ''
+    cp -r ${finalAttrs.ui} ui/build
   '';
 
   passthru = {
-    # For nix-update to detect the location of this attribute from this
-    # derivation.
-    inherit (ui) offlineCache;
-    updateScript = nix-update-script { };
+    updateScript = nix-update-script {
+      extraArgs = [
+        "--subpackage"
+        "ui"
+      ];
+    };
     tests = {
       nixos = nixosTests.gotify-server;
     };
···
   # produce binaries which panic when executed and are not interesting at all
   subPackages = [ "." ];
 
+  # Based on LD_FLAGS in upstream's .github/workflows/build.yml:
+  # https://github.com/gotify/server/blob/v2.6.3/.github/workflows/build.yml#L33
   ldflags = [
-    "-X main.Version=${version}"
+    "-s"
+    "-X main.Version=${finalAttrs.version}"
     "-X main.Mode=prod"
+    "-X main.Commit=refs/tags/v${finalAttrs.version}"
+    "-X main.BuildDate=unknown"
   ];
 
-  meta = with lib; {
+  meta = {
     description = "Simple server for sending and receiving messages in real-time per WebSocket";
     homepage = "https://gotify.net";
-    license = licenses.mit;
-    maintainers = with maintainers; [ doronbehar ];
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ doronbehar ];
     mainProgram = "server";
   };
-}
+})

pkgs/by-name/go/gotify-server/ui.nix

···
 {
+  src,
+  version,
   stdenv,
-  yarn,
-  fixup-yarn-lock,
+  yarnConfigHook,
+  yarnBuildHook,
   nodejs-slim,
   fetchYarnDeps,
-  gotify-server,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "gotify-ui";
-  inherit (gotify-server) version;
+  inherit version;
 
-  src = gotify-server.src + "/ui";
+  src = src + "/ui";
 
-  offlineCache = fetchYarnDeps {
-    yarnLock = "${src}/yarn.lock";
+  yarnOfflineCache = fetchYarnDeps {
+    yarnLock = "${finalAttrs.src}/yarn.lock";
     hash = "sha256-ejHzo6NHCMlNiYePWvfMY9Blb58pj3UQ5PFI0V84flI=";
   };
 
   nativeBuildInputs = [
-    yarn
-    fixup-yarn-lock
+    yarnConfigHook
+    yarnBuildHook
     nodejs-slim
   ];
 
-  postPatch = ''
-    export HOME=$NIX_BUILD_TOP/fake_home
-    yarn config --offline set yarn-offline-mirror $offlineCache
-    fixup-yarn-lock yarn.lock
-    yarn install --offline --frozen-lockfile --ignore-scripts --no-progress --non-interactive
-    patchShebangs node_modules/
-  '';
-
-  buildPhase = ''
-    runHook preBuild
-
-    export NODE_OPTIONS=--openssl-legacy-provider
-    yarn --offline build
-
-    runHook postBuild
-  '';
+  env.NODE_OPTIONS = "--openssl-legacy-provider";
 
   installPhase = ''
     runHook preInstall
···
 
     runHook postInstall
   '';
-}
+})