From a0828c8916c8674816e25cf01fa4b07c05eec6e8 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sat, 22 Jul 2017 23:34:47 +0200
Subject: lib.eval-source: sanitize source

---
 lib/eval-source.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/eval-source.nix b/lib/eval-source.nix
index 468fc92d1..ff853185b 100644
--- a/lib/eval-source.nix
+++ b/lib/eval-source.nix
@@ -10,6 +10,12 @@ let
       };
     };
   };
+  sanitize = x: getAttr (typeOf x) {
+    set = mapAttrs
+            (const sanitize)
+            (filterAttrs (name: value: name != "_module" && value != null) x);
+    string = x;
+  };
 in
   # This function's return value can be used as pkgs.populate input.
-  _file: source: (eval _file source).config.source
+  _file: source: sanitize (eval _file source).config.source
-- 
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