From a94453374a1d925bd6bcc1e26da1bcb4b71bce2d Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Sat, 14 Feb 2026 06:44:36 +0000
Subject: [PATCH] ax25-apps: fix `glibc-2.42` build failure

Without the change the build fails in `master` as https://hydra.nixos.org/build/319882690:

```
io.c:22:10: fatal error: termio.h: No such file or directory
   22 | #include <termio.h>
      |          ^~~~~~~~~~
```
---
 pkgs/by-name/ax/ax25-apps/glibc-2.42.patch | 26 ++++++++++++++++++++++
 pkgs/by-name/ax/ax25-apps/package.nix      |  5 +++++
 2 files changed, 31 insertions(+)
 create mode 100644 pkgs/by-name/ax/ax25-apps/glibc-2.42.patch

diff --git a/pkgs/by-name/ax/ax25-apps/glibc-2.42.patch b/pkgs/by-name/ax/ax25-apps/glibc-2.42.patch
new file mode 100644
index 000000000000..1a0c7700549e
--- /dev/null
+++ b/pkgs/by-name/ax/ax25-apps/glibc-2.42.patch
@@ -0,0 +1,26 @@
+--- a/ax25ipd/io.c
++++ b/ax25ipd/io.c
+@@ -19,20 +19,21 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <syslog.h>
+-#include <termio.h>
++#include <termios.h>
+ #include <time.h>
+ #include <unistd.h>
+ #include <arpa/inet.h>
+ #include <netinet/in.h>
+ #include <netinet/in_systm.h>
+ #include <netinet/ip.h>
++#include <sys/ioctl.h>
+ #include <sys/types.h>
+ #include <sys/time.h>
+ #include <sys/socket.h>
+ 
+ #include "ax25ipd.h"
+ 
+-static struct termio nterm;
++static struct termios nterm;
+ 
+ int ttyfd = -1;
+ static int udpsock = -1;
diff --git a/pkgs/by-name/ax/ax25-apps/package.nix b/pkgs/by-name/ax/ax25-apps/package.nix
index dc71602f686f..f92d65f2051e 100644
--- a/pkgs/by-name/ax/ax25-apps/package.nix
+++ b/pkgs/by-name/ax/ax25-apps/package.nix
@@ -29,6 +29,11 @@ stdenv.mkDerivation {
     hash = "sha256-RLeFndis2OhIkJPLD+YfEUrJdZL33huVzlHq+kGq7dA=";
   };
 
+  patches = [
+    # Fix build against glibc-2.42
+    ./glibc-2.42.patch
+  ];
+
   configureFlags = [
     "--sysconfdir=/etc"
     "--localstatedir=/var/lib"