From 7181888c23a5ccf6f5b4721fa3bc305477af8179 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Sun, 24 Feb 2013 19:28:24 +0100
Subject: pkgs/lib/strings.nix: add 'enableFeature' function to simplify
 generation of GNU Autoconf "--{enable,disable}-feature" strings

---
 pkgs/lib/strings.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/lib/strings.nix b/pkgs/lib/strings.nix
index 19d1738182f4..8ea4106709ab 100644
--- a/pkgs/lib/strings.nix
+++ b/pkgs/lib/strings.nix
@@ -171,4 +171,9 @@ rec {
   assert ! eqStrings name filename;
   name;
 
+
+  # Create an --{enable,disable}-<feat> string that can be passed to
+  # standard GNU Autoconf scripts.
+  enableFeature = enable: feat: "--${if enable then "enable" else "disable"}-${feat}";
+
 }
-- 
cgit 1.4.1