From 24a345abcda9c66af379d2a23362fad75c3b01df Mon Sep 17 00:00:00 2001
From: Alex Epelde <alex@epelde.net>
Date: Sun, 29 Mar 2026 12:13:29 -0400
Subject: [PATCH] _4ti2: patch in absolute patch to `which`

---
 pkgs/by-name/_4/_4ti2/package.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/by-name/_4/_4ti2/package.nix b/pkgs/by-name/_4/_4ti2/package.nix
index 55b0cd1709ce..775a034e64e0 100644
--- a/pkgs/by-name/_4/_4ti2/package.nix
+++ b/pkgs/by-name/_4/_4ti2/package.nix
@@ -5,6 +5,7 @@
   autoreconfHook,
   glpk,
   gmp,
+  which,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -18,6 +19,12 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-bFvq90hLLGty7p6NLxOARVvKdizg3bp2NkP9nZpVFzQ=";
   };
 
+  postPatch = ''
+    substituteInPlace src/{groebner/script.template.in,zsolve/{graver,hilbert}.template} \
+      --replace-fail 'SCRIPT=$(realpath $(which "$0"))' \
+                     'SCRIPT=$(realpath $(${lib.getExe which} "$0"))'
+  '';
+
   nativeBuildInputs = [
     autoreconfHook
   ];