summary refs log tree commit diff
path: root/pkgs/applications/graphics/gqview/default.nix
diff options
context:
space:
mode:
Diffstat (limited to 'pkgs/applications/graphics/gqview/default.nix')
-rw-r--r--pkgs/applications/graphics/gqview/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/applications/graphics/gqview/default.nix b/pkgs/applications/graphics/gqview/default.nix
index b507c67b5f53..2fd40e983b60 100644
--- a/pkgs/applications/graphics/gqview/default.nix
+++ b/pkgs/applications/graphics/gqview/default.nix
@@ -1,6 +1,6 @@
 {stdenv, fetchurl, pkgconfig, gtk, libpng}:
 
-assert !isNull pkgconfig && !isNull gtk && !isNull libpng;
+assert pkgconfig != null && gtk != null && libpng != null;
 # Note that we cannot just copy gtk's png attribute, since gtk might
 # not be linked against png.
 assert libpng == gtk.libpng;