From 4efbf5545968d629f125be806182ef415db7ad7c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philippe=20H=C3=BCrlimann?= <p@hurlimann.org>
Date: Fri, 5 Dec 2025 11:56:09 +0100
Subject: [PATCH] prometheus: fix cross-build

---
 pkgs/by-name/pr/prometheus/package.nix | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pkgs/by-name/pr/prometheus/package.nix b/pkgs/by-name/pr/prometheus/package.nix
index 2ad59a39c355..7b75b0b7bff7 100644
--- a/pkgs/by-name/pr/prometheus/package.nix
+++ b/pkgs/by-name/pr/prometheus/package.nix
@@ -1,5 +1,6 @@
 {
   stdenv,
+  buildPackages,
   lib,
   go,
   buildGoModule,
@@ -48,6 +49,8 @@ buildGoModule (finalAttrs: {
     hash = "sha256-hRuZxwPPDLxQvy5MPKEyfmanNabcSjLRO+XbNKugPtk=";
   };
 
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+
   vendorHash = "sha256-5wDaG01vcTtGzrS/S33U5XWXoSWM+N9z3dzXZlILxD8=";
 
   webUiStatic = fetchurl {
@@ -96,7 +99,9 @@ buildGoModule (finalAttrs: {
   '';
 
   preBuild = ''
-    if [[ -d vendor ]]; then GOARCH= make -o assets assets-compress plugins; fi
+    if [[ -d vendor ]]; then
+      GOARCH= CC="$CC_FOR_BUILD" LD="$LD_FOR_BUILD" make -o assets assets-compress plugins
+    fi
   '';
 
   tags = [ "builtinassets" ];