ory-hydra: run upstream test suite

* add `subPackages` attr to build and test relevant artifacts, remove
  custom `checkPhase`
* add __darwinAllowLocalNetworking, __structuredAttrs
* update comment (https://github.com/NixOS/nixpkgs/pull/502029#discussion_r3016666366)
* use `finalAttrs.src.tag` (https://github.com/NixOS/nixpkgs/pull/502029#discussion_r3016668229)
* remove `-failfast` switch (https://github.com/NixOS/nixpkgs/pull/502029#discussion_r3016669901)
* fix tests by adding `export GOFLAGS=''${GOFLAGS//-trimpath/}`
* add `postInstall` to install shell completion, update meta attrs

pkgs/by-name/or/ory-hydra/package.nix

@@ -1,8 +1,10 @@
 {
   lib,
+  stdenv,
   buildGoModule,
   fetchFromGitHub,
   versionCheckHook,
+  installShellFiles,
 }:
 buildGoModule (finalAttrs: {
   pname = "hydra";
@@ -17,6 +19,7 @@ buildGoModule (finalAttrs: {
 
   vendorHash = "sha256-KVCoDATyt5Qp0r3vGwdXqkjh0FEdNyKi6mXk99D6HD8=";
 
+  __structuredAttrs = true;
   # `json1` not needed (see: https://github.com/ory/hydra/commit/93edc9ad894771c67f46ae2c57ee7e50382d73cd)
   # `sqlite_omit_load_extension` consistency with upstream (see: https://github.com/ory/hydra/blob/master/.docker/Dockerfile-local-build#L20C58-L20C84). Will disable sqlite runtime extension loading (see: https://sqlite.org/loadext.html)
   tags = [
@@ -25,22 +28,49 @@ buildGoModule (finalAttrs: {
     "sqlite_omit_load_extension"
   ];
 
-  subPackages = [ "." ];
+  subPackages = [ "..." ];
 
   ldflags = [
     "-s"
-    "-X github.com/ory/hydra/v2/driver/config.Version=v${finalAttrs.version}"
+    "-X github.com/ory/hydra/v2/driver/config.Version=${finalAttrs.src.tag}"
     "-X github.com/ory/hydra/v2/driver/config.Commit=${finalAttrs.src.rev}"
   ];
 
+  nativeBuildInputs = [ installShellFiles ];
+  # tests use dynamic port assignment via port `0`
+  __darwinAllowLocalNetworking = true;
+  preCheck = ''
+    export version="${finalAttrs.src.tag}"
+  '';
+  checkFlags = [
+    "-short"
+  ];
   doInstallCheck = true;
   nativeInstallCheckInputs = [ versionCheckHook ];
   versionCheckProgramArg = [ "version" ];
 
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+    installShellCompletion --cmd hydra \
+      --bash <($out/bin/hydra completion bash) \
+      --fish <($out/bin/hydra completion fish) \
+      --zsh <($out/bin/hydra completion zsh)
+  '';
+
   meta = {
     description = "OpenID Certified™ OAuth 2.0 Server and OpenID Connect Provider";
-    homepage = "https://www.ory.com/hydra";
-    changelog = "https://github.com/ory/hydra/releases/tag/v${finalAttrs.version}";
+    longDescription = ''
+      Server implementation of the OAuth 2.0 authorization framework and the OpenID Connect Core 1.0. It follows
+      [cloud architecture best practices](https://www.ory.com/docs/ecosystem/software-architecture-philosophy) and focuses on:
+
+      - OAuth 2.0 and OpenID Connect flows
+      - Token issuance and validation
+      - Client management
+      - Consent and login flow orchestration
+      - JWKS management
+      - Low latency and high throughput
+    '';
+    homepage = "https://github.com/ory/hydra";
+    changelog = "https://github.com/ory/hydra/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [
       debtquity