haskell: add monad-extras

2 files changed, 19 insertions, 0 deletions

diff --git a/pkgs/development/libraries/haskell/monad-extras/default.nix b/pkgs/development/libraries/haskell/monad-extras/default.nix
new file mode 100644
index 0000000000000..9a66c5ab983db
--- /dev/null
+++ b/pkgs/development/libraries/haskell/monad-extras/default.nix
@@ -0,0 +1,17 @@
+{ cabal, mmorph, monadControl, stm, transformers, transformersBase
+}:
+
+cabal.mkDerivation (self: {
+  pname = "monad-extras";
+  version = "0.5.7";
+  sha256 = "0dqj3n3ki679b6z5y7qw084chbahlqmj2vgj7yx0v552bl0ylzyj";
+  buildDepends = [
+    mmorph monadControl stm transformers transformersBase
+  ];
+  meta = {
+    homepage = "http://github.com/jwiegley/monad-extras";
+    description = "Extra utility functions for working with monads";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 7f708438fc77d..22b9be810bec4 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1745,6 +1745,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   monadcryptorandom = callPackage ../development/libraries/haskell/monadcryptorandom {};
 
+  monadExtras = callPackage ../development/libraries/haskell/monad-extras {};
+
   monadloc = callPackage ../development/libraries/haskell/monadloc {};
 
   monadLoops = callPackage ../development/libraries/haskell/monad-loops {};