tcld: 0.40.0 -> 0.41.0 (#418245)

pkgs/by-name/tc/tcld/package.nix

@@ -4,25 +4,46 @@
   lib,
   stdenvNoCC,
   installShellFiles,
+  versionCheckHook,
   nix-update-script,
   ...
 }:
 
 buildGoModule (finalAttrs: {
   pname = "tcld";
-  version = "0.40.0";
+  version = "0.41.0";
   src = fetchFromGitHub {
     owner = "temporalio";
     repo = "tcld";
     rev = "refs/tags/v${finalAttrs.version}";
-    hash = "sha256-bIJSvop1T3yiLs/LTgFxIMmObfkVfvvnONyY4Bsjj8g=";
+    hash = "sha256-Jnm6l9Jj1mi9esDS6teKTEMhq7V1QD/dTl3qFhKsW4o=";
+    # Populate values from the git repository; by doing this in 'postFetch' we
+    # can delete '.git' afterwards and the 'src' should stay reproducible.
+    leaveDotGit = true;
+    postFetch = ''
+      cd "$out"
+      # Replicate 'COMMIT' and 'DATE' variables from upstream's Makefile.
+      git rev-parse --short=12 HEAD > $out/COMMIT
+      git log -1 --format=%cd --date=iso-strict > $out/SOURCE_DATE_EPOCH
+      find "$out" -name .git -exec rm -rf '{}' '+'
+    '';
   };
+
   vendorHash = "sha256-GOko8nboj7eN4W84dqP3yLD6jK7GA0bANV0Tj+1GpgY=";
-  ldFlags = [
+
+  subPackages = [ "cmd/tcld" ];
+  ldflags = [
     "-s"
     "-w"
+    "-X=github.com/temporalio/tcld/app.version=${finalAttrs.version}"
   ];
 
+  # ldflags based on metadata from git.
+  preBuild = ''
+    ldflags+=" -X=github.com/temporalio/tcld/app.date=$(cat SOURCE_DATE_EPOCH)"
+    ldflags+=" -X=github.com/temporalio/tcld/app.commit=$(cat COMMIT)"
+  '';
+
   # FIXME: Remove after https://github.com/temporalio/tcld/pull/447 lands.
   patches = [ ./compgen.patch ];
 
@@ -36,12 +57,19 @@ buildGoModule (finalAttrs: {
     installShellCompletion --cmd tcld --zsh ${./zsh_autocomplete}
   '';
 
+  nativeInstallCheckInputs = [ versionCheckHook ];
+  doInstallCheck = true;
+  versionCheckProgram = "${placeholder "out"}/bin/${finalAttrs.meta.mainProgram}";
+  versionCheckProgramArg = "version";
+
   passthru.updateScript = nix-update-script { };
 
   meta = {
     description = "Temporal cloud cli";
     homepage = "https://www.github.com/temporalio/tcld";
+    changelog = "https://github.com/temporalio/tcld/releases/tag/v${finalAttrs.version}";
     license = lib.licenses.mit;
     teams = [ lib.teams.mercury ];
+    mainProgram = "tcld";
   };
 })