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-rw-r--r--pkgs/development/libraries/haskell/thyme/default.nix3
1 files changed, 2 insertions, 1 deletions
diff --git a/pkgs/development/libraries/haskell/thyme/default.nix b/pkgs/development/libraries/haskell/thyme/default.nix
index b646fe4d1559..dbf78bac9030 100644
--- a/pkgs/development/libraries/haskell/thyme/default.nix
+++ b/pkgs/development/libraries/haskell/thyme/default.nix
@@ -2,13 +2,14 @@
 
 { cabal, aeson, attoparsec, Cabal, deepseq, filepath, mtl
 , profunctors, QuickCheck, random, systemPosixRedirect, text, time
-, vector, vectorSpace, vectorThUnbox
+, vector, vectorSpace, vectorThUnbox, cpphs
 }:
 
 cabal.mkDerivation (self: {
   pname = "thyme";
   version = "0.3.5.2";
   sha256 = "1vb5qn9m88y9738d9znim5lprb8z10am5yjaksdjl151li8apd6x";
+  buildTools = [ cpphs ];
   buildDepends = [
     aeson attoparsec deepseq mtl profunctors QuickCheck random text
     time vector vectorSpace vectorThUnbox