mattermost: 5.37.5 -> 6.2.1

Add overridable arguments:
- versionSuffix (default: nixpkgs)
- buildDate (default: 1970-01-01)
- storePathAsBuildHash (default: false)

pkgs/servers/mattermost/default.nix

@@ -1,35 +1,71 @@
-{ lib, stdenv, fetchurl, fetchFromGitHub, buildGoModule, buildEnv }:
+{ lib, stdenv, fetchurl, fetchFromGitHub, buildGo117Package, buildEnv
+
+# The suffix for the Mattermost version.
+, versionSuffix ? "nixpkgs"
+
+# The constant build date.
+, buildDate ? "1970-01-01"
+
+# Set to true to set the build hash to the Nix store path.
+, storePathAsBuildHash ? false }:
 
 let
-  version = "5.37.5";
+  version = "6.2.1";
 
-  mattermost-server = buildGoModule rec {
+  goPackagePath = "github.com/mattermost/mattermost-server";
+
+  mattermost-server-build = buildGo117Package rec {
     pname = "mattermost-server";
-    inherit version;
+    inherit version goPackagePath;
 
     src = fetchFromGitHub {
       owner = "mattermost";
-      repo = pname;
+      repo = "mattermost-server";
       rev = "v${version}";
-      sha256 = "sha256-ddK7gxWl1arCtW2vqmon28AAeyZQPYlbGj3QtOlqtiU=";
+      sha256 = "WjBsbW7aEI+MX2I1LrEJh8JgNQ4Do7PpeshXgaQAk1s=";
     };
 
-    vendorSha256 = null;
-    doCheck = false;
-
     ldflags = [
-      "-s" "-w" "-X github.com/mattermost/mattermost-server/v${lib.versions.major version}/model.BuildNumber=${version}"
+      "-s" "-w"
+      "-X ${goPackagePath}/model.BuildNumber=${version}${lib.optionalString (versionSuffix != null) "-${versionSuffix}"}"
+      "-X ${goPackagePath}/model.BuildDate=${buildDate}"
+      "-X ${goPackagePath}/model.BuildEnterpriseReady=false"
     ];
-
   };
 
+  mattermost-server = if storePathAsBuildHash then mattermost-server-build.overrideAttrs (orig: {
+    buildPhase = ''
+      origGo="$(type -p go)"
+
+      # Override the Go binary to set the build hash in -ldflags to $out.
+      # Technically this is more accurate than a Git hash!
+      # nixpkgs does not appear to support environment variables in ldflags
+      # for go packages, so we have to rewrite -ldflags before calling go.
+      go() {
+        local args=()
+        local ldflags="-X ${goPackagePath}/model.BuildHash=$out"
+        local found=0
+        for arg in "$@"; do
+          if [[ "$arg" == -ldflags=* ]] && [ $found -eq 0 ]; then
+            arg="-ldflags=''${ldflags} ''${arg#-ldflags=}"
+            found=1
+          fi
+          args+=("$arg")
+        done
+        "$origGo" "''${args[@]}"
+      }
+
+      ${orig.buildPhase}
+    '';
+  }) else mattermost-server-build;
+
   mattermost-webapp = stdenv.mkDerivation {
     pname = "mattermost-webapp";
     inherit version;
 
     src = fetchurl {
       url = "https://releases.mattermost.com/${version}/mattermost-${version}-linux-amd64.tar.gz";
-      sha256 = "sha256-G6L8Ct6PtARg2LKxcoFyg9vrDJXIKGByxovquMc6p00=";
+      sha256 = "pV/MwMCK8vMzASXuM1+ePcarIgrcNAkFLEdmPya911E=";
     };
 
     installPhase = ''
@@ -52,7 +88,7 @@ in
       description = "Open-source, self-hosted Slack-alternative";
       homepage = "https://www.mattermost.org";
       license = with licenses; [ agpl3 asl20 ];
-      maintainers = with maintainers; [ fpletz ryantm ];
+      maintainers = with maintainers; [ fpletz ryantm numinit ];
       platforms = platforms.unix;
     };
   }