From a0a5a11236cfb7aa3779ddc81c9657d2b950ca40 Mon Sep 17 00:00:00 2001
From: ghpzin <ghpzin@gmail.com>
Date: Wed, 3 Dec 2025 04:29:04 +0300
Subject: [PATCH] glpk: fix build with gcc15

- add patch from debian replacing `bool` typedef and `true`/`false`
defines with `#include <stdbool.h>`:
https://sources.debian.org/data/main/g/glpk/5.0-2/debian/patches/gcc-15.patch

Upstream issue:
https://lists.gnu.org/archive/html/bug-glpk/2025-05/msg00000.html
(recommends to use `CFLAGS="-ansi"` instead)

Fixes build failure with gcc15:
```
In file included from api/minisat1.c:23:
./minisat/minisat.h:37:13: error: 'bool' cannot be defined via 'typedef'
   37 | typedef int bool;
      |             ^~~~
./minisat/minisat.h:37:13: note: 'bool' is a keyword with '-std=c23' onwards
./minisat/minisat.h:37:1: warning: useless type name in empty declaration
   37 | typedef int bool;
      | ^~~~~~~
```
---
 pkgs/by-name/gl/glpk/package.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/by-name/gl/glpk/package.nix b/pkgs/by-name/gl/glpk/package.nix
index ab7cae435b80..7a2d8532d6d9 100644
--- a/pkgs/by-name/gl/glpk/package.nix
+++ b/pkgs/by-name/gl/glpk/package.nix
@@ -3,6 +3,7 @@
   stdenv,
   fetchurl,
   fetchpatch,
+  fetchDebianPatch,
   libmysqlclient,
   # Excerpt from glpk's INSTALL file:
   # This feature allows the exact simplex solver to use the GNU MP
@@ -51,6 +52,14 @@ stdenv.mkDerivation rec {
       url = "https://raw.githubusercontent.com/sagemath/sage/d3c1f607e32f964bf0cab877a63767c86fd00266/build/pkgs/glpk/patches/error_recovery.patch";
       sha256 = "sha256-2hNtUEoGTFt3JgUvLH3tPWnz+DZcXNhjXzS+/V89toA=";
     })
+
+    # Fix build with gcc15
+    (fetchDebianPatch {
+      inherit pname version;
+      debianRevision = "2";
+      patch = "gcc-15.patch";
+      hash = "sha256-wuWPYqJKIKJAJaeJXW7lhvapu8Fd3zHjLAv7Ve7q8Qw=";
+    })
   ];
 
   postPatch =