From 4122bd643e29232cae238c97f020a91c3c26c65b Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Sun, 20 Nov 2011 20:53:15 +0000
Subject: validateLicenses: Warn about derivations lacking licensing
 information.

svn path=/nixpkgs/trunk/; revision=30496
---
 pkgs/stdenv/adapters.nix | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'pkgs/stdenv/adapters.nix')

diff --git a/pkgs/stdenv/adapters.nix b/pkgs/stdenv/adapters.nix
index 4c6cd24a973..a1e8aafd7bc 100644
--- a/pkgs/stdenv/adapters.nix
+++ b/pkgs/stdenv/adapters.nix
@@ -330,16 +330,22 @@ rec {
     { mkDerivation = args:
         let
           pkg = stdenv.mkDerivation args;
+          drv = builtins.unsafeDiscardStringContext pkg.drvPath;
           license =
             if pkg ? meta && pkg.meta ? license then
               pkg.meta.license
+            else if pkg ? outputHash then
+              # Fixed-output derivations such as source tarballs usually
+              # don't have licensing information, but that's OK.
+              null
             else
-              null;
+              builtins.trace
+                "warning: ${drv} lacks licensing information" null;
 
           validate = arg:
             if licensePred license then arg
             else abort ''
-              while building ${builtins.unsafeDiscardStringContext pkg.drvPath}:
+              while building ${drv}:
               license `${builtins.toString license}' does not pass the predicate.
             '';
 
-- 
cgit 1.4.1