From 831bf15565a0d14a252169847d5b9de9178ad1a7 Mon Sep 17 00:00:00 2001
From: Mitsuhiro Nakamura <m.nacamura@gmail.com>
Date: Fri, 28 May 2021 20:51:08 +0900
Subject: [PATCH] feedgnuplot: fix perl shebang

(cherry picked from commit 75176e353c7e9d809f8465d70c76dc96452cec70)
---
 pkgs/tools/graphics/feedgnuplot/default.nix | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/graphics/feedgnuplot/default.nix b/pkgs/tools/graphics/feedgnuplot/default.nix
index 02bb022dfb4..768d65af051 100644
--- a/pkgs/tools/graphics/feedgnuplot/default.nix
+++ b/pkgs/tools/graphics/feedgnuplot/default.nix
@@ -1,5 +1,6 @@
 { lib, fetchFromGitHub, makeWrapper, gawk
 , makeFontsConf, freefont_ttf, gnuplot, perl, perlPackages
+, stdenv, shortenPerlShebang
 }:
 
 let
@@ -21,7 +22,7 @@ perlPackages.buildPerlPackage rec {
 
   outputs = [ "out" ];
 
-  nativeBuildInputs = [ makeWrapper gawk ];
+  nativeBuildInputs = [ makeWrapper gawk ] ++ lib.optional stdenv.isDarwin shortenPerlShebang;
 
   buildInputs = [ gnuplot perl ]
     ++ (with perlPackages; [ ListMoreUtils IPCRun StringShellQuote ]);
@@ -36,7 +37,9 @@ perlPackages.buildPerlPackage rec {
   # Tests require gnuplot 4.6.4 and are completely skipped with gnuplot 5.
   doCheck = false;
 
-  postInstall = ''
+  postInstall = lib.optionalString stdenv.isDarwin ''
+    shortenPerlShebang $out/bin/feedgnuplot
+  '' + ''
     wrapProgram $out/bin/feedgnuplot \
         --prefix "PATH" ":" "$PATH" \
         --prefix "PERL5LIB" ":" "$PERL5LIB"