Merge pull request #167010 from Ma27/blackbox-exporter-version

prometheus-backbox-exporter: correctly expose version info

pkgs/servers/monitoring/prometheus/blackbox-exporter.nix

···
 buildGoModule rec {
   pname = "blackbox_exporter";
   version = "0.20.0";
+  rev = "v${version}";
 
   src = fetchFromGitHub {
-    rev = "v${version}";
+    inherit rev;
     owner = "prometheus";
     repo = "blackbox_exporter";
     sha256 = "sha256-Y3HdFIChkQVooxy2I2Gbqw3WLHsI4Zm+osHTzFluRZA=";
···
 
   passthru.tests = { inherit (nixosTests.prometheus-exporters) blackbox; };
 
+  ldflags = [
+    "-s"
+    "-w"
+    "-X github.com/prometheus/common/version.Version=${version}"
+    "-X github.com/prometheus/common/version.Revision=${rev}"
+    "-X github.com/prometheus/common/version.Branch=unknown"
+    "-X github.com/prometheus/common/version.BuildUser=nix@nixpkgs"
+    "-X github.com/prometheus/common/version.BuildDate=unknown"
+  ];
+
   meta = with lib; {
     description = "Blackbox probing of endpoints over HTTP, HTTPS, DNS, TCP and ICMP";
     homepage = "https://github.com/prometheus/blackbox_exporter";
     license = licenses.asl20;
-    maintainers = with maintainers; [ globin fpletz willibutz Frostman ];
+    maintainers = with maintainers; [ globin fpletz willibutz Frostman ma27 ];
     platforms = platforms.unix;
   };
 }