From 9958dbbd26736d94927fa737e6f15276284aca86 Mon Sep 17 00:00:00 2001
From: Jonathan Davies <jpds@protonmail.com>
Date: Tue, 19 Sep 2023 22:01:10 +0100
Subject: [PATCH] prometheus-systemd-exporter: Added ldflags to include version
 into build_info metric.

Fixes: #256135
---
 .../servers/monitoring/prometheus/systemd-exporter.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/servers/monitoring/prometheus/systemd-exporter.nix b/pkgs/servers/monitoring/prometheus/systemd-exporter.nix
index e0f93332547e..835433e59619 100644
--- a/pkgs/servers/monitoring/prometheus/systemd-exporter.nix
+++ b/pkgs/servers/monitoring/prometheus/systemd-exporter.nix
@@ -13,6 +13,16 @@ buildGoModule rec {
     sha256 = "sha256-q6rnD8JCtB1zTkUfZt6f2Uyo91uFi3HYI7WFlZdzpBM=";
   };
 
+  ldflags = [
+    "-s"
+    "-w"
+    "-X github.com/prometheus/common/version.Version=${version}"
+    "-X github.com/prometheus/common/version.Revision=unknown"
+    "-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"
+  ];
+
   passthru.tests = { inherit (nixosTests.prometheus-exporters) systemd; };
 
   meta = with lib; {