mockgen: change upstream to uber-go fork

nixos/doc/manual/release-notes/rl-2405.section.md

@@ -128,6 +128,8 @@ The pre-existing [services.ankisyncd](#opt-services.ankisyncd.enable) has been m
   `globalRedirect` can now have redirect codes other than 301 through
   `redirectCode`.
 
+- The source of the `mockgen` package has changed to the [go.uber.org/mock](https://github.com/uber-go/mock) fork because [the original repository is no longer maintained](https://github.com/golang/mock#gomock).
+
 - [](#opt-boot.kernel.sysctl._net.core.wmem_max_) changed from a string to an integer because of the addition of a custom merge option (taking the highest value defined to avoid conflicts between 2 services trying to set that value), just as [](#opt-boot.kernel.sysctl._net.core.rmem_max_) since 22.11.
 
 - `services.zfs.zed.enableMail` now uses the global `sendmail` wrapper defined by an email module

pkgs/development/tools/mockgen/default.nix

@@ -1,28 +1,49 @@
-{ buildGoModule, fetchFromGitHub, lib }:
+{ buildGoModule
+, fetchFromGitHub
+, lib
+, testers
+, mockgen
+}:
 
 buildGoModule rec {
   pname = "mockgen";
-  version = "1.6.0";
+  version = "0.4.0";
 
   src = fetchFromGitHub {
-    owner = "golang";
+    owner = "uber-go";
     repo = "mock";
     rev = "v${version}";
-    sha256 = "sha256-5Kp7oTmd8kqUN+rzm9cLqp9nb3jZdQyltGGQDiRSWcE=";
+    sha256 = "sha256-3nt70xrZisK5vgQa+STZPiY4F9ITKw8PbBWcKoBn4Vc=";
   };
 
-  vendorHash = "sha256-5gkrn+OxbNN8J1lbgbxM8jACtKA7t07sbfJ7gVJWpJM=";
+  vendorHash = "sha256-mcNVud2jzvlPPQEaar/eYZkP71V2Civz+R5v10+tewA=";
+
+  CGO_ENABLED = 0;
 
   subPackages = [ "mockgen" ];
 
-  preCheck = ''
-    export GOROOT="$(go env GOROOT)"
-  '';
+  ldflags = [
+    "-X=main.version=${version}"
+    "-X=main.date=1970-01-01T00:00:00Z"
+    "-X=main.commit=unknown"
+  ];
+
+  passthru.tests.version = testers.testVersion {
+    package = mockgen;
+    command = "mockgen -version";
+    version = ''
+      v${version}
+      Commit: unknown
+      Date: 1970-01-01T00:00:00Z
+    '';
+  };
 
   meta = with lib; {
     description = "GoMock is a mocking framework for the Go programming language";
-    homepage = "https://github.com/golang/mock";
+    homepage = "https://github.com/uber-go/mock";
+    changelog = "https://github.com/uber-go/mock/blob/v${version}/CHANGELOG.md";
     license = licenses.asl20;
     maintainers = with maintainers; [ bouk ];
+    mainProgram = "mockgen";
   };
 }