From cda7e5350c3b62c8946a1449b9e0ff956cd6dd7b Mon Sep 17 00:00:00 2001
From: Joseph Stahl <1269177+josephst@users.noreply.github.com>
Date: Sat, 25 Nov 2023 14:43:54 -0500
Subject: [PATCH] whois: add implicit.patch to fix builds with clang 16

Based on work from Macports by @ryandesign.

Clang 16 now reports error (instead of warning)
for -Wimplicit-function-declaration which was breaking builds
---
 pkgs/tools/networking/whois/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/networking/whois/default.nix b/pkgs/tools/networking/whois/default.nix
index fe4950d5c240..992303ec6072 100644
--- a/pkgs/tools/networking/whois/default.nix
+++ b/pkgs/tools/networking/whois/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, perl, gettext, pkg-config, libidn2, libiconv }:
+{ lib, stdenv, fetchFromGitHub, fetchpatch, perl, gettext, pkg-config, libidn2, libiconv }:
 
 stdenv.mkDerivation rec {
   version = "5.5.20";
@@ -11,6 +11,14 @@ stdenv.mkDerivation rec {
     hash = "sha256-0vQ6GBBtNA6Phlqhl3NZvEJqoyZ1um7VdkpsIRKhsm4=";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/macports/macports-ports/raw/93de4e9fc1e5e8427bf98f48209e783a5e8fab57/net/whois/files/implicit.patch";
+      extraPrefix = "";
+      hash = "sha256-ogVylQz//tpXxPNIWIHkhghvToU1z1D1FfnUBdZLyRY=";
+    })
+  ];
+
   nativeBuildInputs = [ perl gettext pkg-config ];
   buildInputs = [ libidn2 libiconv ];