From a9238a1e6f6613af99defa286595a8bfc83853ed Mon Sep 17 00:00:00 2001
From: Tom van Dijk <18gatenmaker6@gmail.com>
Date: Tue, 29 Jul 2025 01:52:03 +0200
Subject: [PATCH] iwd: get rid of readline segfault

Co-authored-by: Franz Pletz <fpletz@fnordicwalking.de>
---
 pkgs/by-name/iw/iwd/package.nix | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/pkgs/by-name/iw/iwd/package.nix b/pkgs/by-name/iw/iwd/package.nix
index ebf3f4324a86..9e9243adf928 100644
--- a/pkgs/by-name/iw/iwd/package.nix
+++ b/pkgs/by-name/iw/iwd/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchgit,
+  fetchpatch,
   autoreconfHook,
   pkg-config,
   ell,
@@ -13,6 +14,24 @@
   gitUpdater,
 }:
 
+let
+  # fix segfault in iwctl with readline-8.3
+  # https://lists.gnu.org/archive/html/bug-readline/2025-07/msg00007.htmlP
+  readline-patch = fetchpatch {
+    url = "https://lists.gnu.org/archive/html/bug-readline/2025-07/txtmA7rksnmmi.txt";
+    hash = "sha256-QSS1GUJ2i/bF2ksvUtw27oqFHuTHALi+7QwxMFt9ZaM=";
+    stripLen = 2;
+  };
+
+  myreadline = (
+    readline.overrideAttrs (
+      _final: prev: {
+        patches = (prev.patches or [ ]) ++ [ readline-patch ];
+      }
+    )
+  );
+in
+
 stdenv.mkDerivation (finalAttrs: {
   pname = "iwd";
   version = "3.9";
@@ -47,7 +66,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     ell
     python3Packages.python
-    readline
+    myreadline
   ];
 
   nativeCheckInputs = [ openssl ];