From 0b1a3581144bb74a576282104266df59dc4e4d14 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Thu, 29 Jan 2026 21:45:46 +0000
Subject: [PATCH 1/2] thc-ipv6: `fix gcc-15` build

Without the chnage the build fails on `master` as
https://hydra.nixos.org/build/320117087:

    thc-ipv6-lib.c: In function 'thc_pcap_function':
    thc-ipv6-lib.c:127:36: error: too many arguments to function 'thc_open_ipv6'; expected 0, have 1
      127 |   if (thc_socket < 0) thc_socket = thc_open_ipv6(interface);
          |                                    ^~~~~~~~~~~~~ ~~~~~~~~~
    In file included from thc-ipv6-lib.c:75:
    thc-ipv6.h:211:23: note: declared here
      211 | extern int            thc_open_ipv6();
          |                       ^~~~~~~~~~~~~
---
 pkgs/by-name/th/thc-ipv6/package.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pkgs/by-name/th/thc-ipv6/package.nix b/pkgs/by-name/th/thc-ipv6/package.nix
index c00eabd2e9a7..f44334bd3628 100644
--- a/pkgs/by-name/th/thc-ipv6/package.nix
+++ b/pkgs/by-name/th/thc-ipv6/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch,
   libpcap,
   openssl,
   libnetfilter_queue,
@@ -18,6 +19,16 @@ stdenv.mkDerivation rec {
     sha256 = "07kwika1zdq62s5p5z94xznm77dxjxdg8k0hrg7wygz50151nzmx";
   };
 
+  patches = [
+    # Fix gcc-15 build failure:
+    #   https://github.com/vanhauser-thc/thc-ipv6/pull/53
+    (fetchpatch {
+      name = "gcc-15.patch";
+      url = "https://github.com/vanhauser-thc/thc-ipv6/commit/c9617d5638196bd88336225a6abdfd45c3df0bcf.patch";
+      hash = "sha256-4+LmRsDInzzNFHvj8WK+r1fKeoLggQW7yrahC1d6WCs=";
+    })
+  ];
+
   buildInputs = [
     libpcap
     openssl

From 3dd9c8312643fd46b033822bd7b72a198f79967b Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Thu, 29 Jan 2026 21:47:04 +0000
Subject: [PATCH 2/2] thc-ipv6: enable parallel building

---
 pkgs/by-name/th/thc-ipv6/package.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/by-name/th/thc-ipv6/package.nix b/pkgs/by-name/th/thc-ipv6/package.nix
index f44334bd3628..cd3daa1f7c3c 100644
--- a/pkgs/by-name/th/thc-ipv6/package.nix
+++ b/pkgs/by-name/th/thc-ipv6/package.nix
@@ -40,6 +40,8 @@ stdenv.mkDerivation rec {
     "PREFIX=$(out)"
   ];
 
+  enableParallelBuilding = true;
+
   meta = {
     description = "IPv6 attack toolkit";
     homepage = "https://github.com/vanhauser-thc/thc-ipv6";