From d45431efa78eefb1a3bee986386e9dbf0c5f6fc2 Mon Sep 17 00:00:00 2001
From: Arnout Engelen <arnout@bzzt.net>
Date: Thu, 3 Apr 2025 09:43:04 +0200
Subject: [PATCH] jemalloc: keep VERSION in header file

fix the recently-introduced regression in
https://github.com/NixOS/nixpkgs/pull/393724
---
 pkgs/development/libraries/jemalloc/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/libraries/jemalloc/default.nix b/pkgs/development/libraries/jemalloc/default.nix
index 5700ca81ceb2..da833969e67f 100644
--- a/pkgs/development/libraries/jemalloc/default.nix
+++ b/pkgs/development/libraries/jemalloc/default.nix
@@ -60,6 +60,7 @@ stdenv.mkDerivation rec {
 
   configureFlags =
     [
+      "--with-version=${version}-0-g0000000000000000000000000000000000000000"
       "--with-lg-vaddr=${with stdenv.hostPlatform; toString (if isILP32 then 32 else parsed.cpu.bits)}"
     ]
     # see the comment on stripPrefix
@@ -85,6 +86,11 @@ stdenv.mkDerivation rec {
   # Tries to link test binaries binaries dynamically and fails
   doCheck = !stdenv.hostPlatform.isStatic;
 
+  doInstallCheck = true;
+  installCheckPhase = ''
+    ! grep missing_version_try_git_fetch_tags $out/include/jemalloc/jemalloc.h
+  '';
+
   # Parallel builds break reproducibility.
   enableParallelBuilding = false;