From 004ecac47b4639c6f8a8419ce2e1dcd18c78268b Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Fri, 21 Apr 2017 22:26:31 +0200
Subject: [PATCH] perl: add patch for sw_vers on darwin

Fixes #25090
---
 pkgs/development/interpreters/perl/default.nix   |  2 +-
 pkgs/development/interpreters/perl/sw_vers.patch | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 pkgs/development/interpreters/perl/sw_vers.patch

diff --git a/pkgs/development/interpreters/perl/default.nix b/pkgs/development/interpreters/perl/default.nix
index bbe59f99eef3..3fe04e6bde2e 100644
--- a/pkgs/development/interpreters/perl/default.nix
+++ b/pkgs/development/interpreters/perl/default.nix
@@ -36,7 +36,7 @@ let
         ./no-sys-dirs.patch
       ]
       ++ optional stdenv.isSunOS ./ld-shared.patch
-      ++ optional stdenv.isDarwin [ ./cpp-precomp.patch ];
+      ++ optional stdenv.isDarwin [ ./cpp-precomp.patch ./sw_vers.patch ];
 
     postPatch = ''
       pwd="$(type -P pwd)"
diff --git a/pkgs/development/interpreters/perl/sw_vers.patch b/pkgs/development/interpreters/perl/sw_vers.patch
new file mode 100644
index 000000000000..9d4cd75486e6
--- /dev/null
+++ b/pkgs/development/interpreters/perl/sw_vers.patch
@@ -0,0 +1,13 @@
+diff --git a/hints/darwin.sh b/hints/darwin.sh
+index afadf53..80b7533 100644
+--- a/hints/darwin.sh
++++ b/hints/darwin.sh
+@@ -329,7 +329,7 @@ EOM
+     # sw_vers output                 what we want
+     # "ProductVersion:    10.10.5"   "10.10"
+     # "ProductVersion:    10.11"     "10.11"
+-        prodvers=`sw_vers|awk '/^ProductVersion:/{print $2}'|awk -F. '{print $1"."$2}'`
++        prodvers="10.10"
+     case "$prodvers" in
+     10.*)
+       add_macosx_version_min ccflags $prodvers