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-rw-r--r--lib/haskell.nix7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/haskell.nix b/lib/haskell.nix
index 4f0ee05ab..f87cfa761 100644
--- a/lib/haskell.nix
+++ b/lib/haskell.nix
@@ -39,7 +39,12 @@ rec {
in
if parse == null then
(pkgs.writeText name s).overrideAttrs (old: {
- dependencies = old.dependencies or [] ++ dependencies;
+ dependencies =
+ lib.uniq
+ (lib.sort (lib.on lib.lessThan (lib.getAttr "name"))
+ (filter
+ (lib.ne null)
+ (old.dependencies or [] ++ dependencies)));
})
else