From 62345fee552f1285ccd5ad60615ee922639dc5a2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Domen=20Ko=C5=BEar?= <domen@dev.si>
Date: Wed, 27 Aug 2014 15:52:44 +0200
Subject: [PATCH] python: provide better message if python interpreter is not
 supported

---
 pkgs/development/python-modules/generic/default.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/generic/default.nix b/pkgs/development/python-modules/generic/default.nix
index 0f5d8499454..4c9c53aab83 100644
--- a/pkgs/development/python-modules/generic/default.nix
+++ b/pkgs/development/python-modules/generic/default.nix
@@ -49,10 +49,9 @@
 
 , ... } @ attrs:
 
-assert (!disabled);
 
 # Keep extra attributes from `attrs`, e.g., `patchPhase', etc.
-python.stdenv.mkDerivation (attrs // {
+if disabled then throw "${name} not supported for interpreter ${python.executable}" else python.stdenv.mkDerivation (attrs // {
   inherit doCheck;
 
   name = namePrefix + name;