From d0a565c182d42f0eecb1b88f83b2a5516ed88989 Mon Sep 17 00:00:00 2001
From: Michal Sojka <michal.sojka@cvut.cz>
Date: Thu, 11 Sep 2025 16:05:57 +0200
Subject: [PATCH] tcpreplay: Fix build after splitting libpcap to multiple
 outputs

Configure file of tcpreplay expects that libpcap header files and
libraries share the same prefix. Since [1] this is no longer true so
we have to patch the configure script.

[1]: https://github.com/NixOS/nixpkgs/pull/429972/commits/da89a2d075f2279a09585c1b217b8f7382817339
---
 pkgs/by-name/tc/tcpreplay/package.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/by-name/tc/tcpreplay/package.nix b/pkgs/by-name/tc/tcpreplay/package.nix
index 00a0f7d429a0e..333293121a579 100644
--- a/pkgs/by-name/tc/tcpreplay/package.nix
+++ b/pkgs/by-name/tc/tcpreplay/package.nix
@@ -17,6 +17,13 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libpcap ];
 
+  # Allow having different prefix for header files (default output
+  # "out") and libraries ("lib" output)
+  postPatch = ''
+    substituteInPlace configure \
+      --replace-fail 'ls ''${testdir}/$dir/libpcap' 'ls ${lib.getLib libpcap}/$dir/libpcap'
+  '';
+
   configureFlags = [
     "--disable-local-libopts"
     "--disable-libopts-install"