From 2f46ed8ef6101dab2fc2cf82d0a68f9309d35179 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sandro=20J=C3=A4ckel?= <sandro.jaeckel@gmail.com>
Date: Sat, 13 Feb 2021 05:59:36 +0100
Subject: [PATCH] gnulib: cleanup, fix shebangs for python script

---
 pkgs/development/tools/gnulib/default.nix | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/pkgs/development/tools/gnulib/default.nix b/pkgs/development/tools/gnulib/default.nix
index 2a2ce1b190f..7441d4018a8 100644
--- a/pkgs/development/tools/gnulib/default.nix
+++ b/pkgs/development/tools/gnulib/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchgit }:
+{ lib, stdenv, fetchgit, python3 }:
 
 stdenv.mkDerivation {
   pname = "gnulib";
@@ -10,19 +10,26 @@ stdenv.mkDerivation {
     sha256 = "0hkg3nql8nsll0vrqk4ifda0v4kpi67xz42r8daqsql6c4rciqnw";
   };
 
-  dontFixup = true;
-  # no "make install", gnulib is a collection of source code
+  postPatch = ''
+    patchShebangs gnulib-tool.py
+  '';
+
+  buildInputs = [ python3 ];
+
   installPhase = ''
-    mkdir -p $out; mv * $out/
-    ln -s $out/lib $out/include
     mkdir -p $out/bin
+    cp -r * $out/
+    ln -s $out/lib $out/include
     ln -s $out/gnulib-tool $out/bin/
   '';
 
-  meta = {
+  # do not change headers to not update all vendored build files
+  dontFixup = true;
+
+  meta = with lib; {
     homepage = "https://www.gnu.org/software/gnulib/";
     description = "Central location for code to be shared among GNU packages";
-    license = lib.licenses.gpl3Plus;
-    platforms = lib.platforms.unix;
+    license = licenses.gpl3Plus;
+    platforms = platforms.unix;
   };
 }