From 7848f96b5824597965bba4acaf5c404cafe1d472 Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Mon, 5 May 2014 19:48:50 -0500
Subject: [PATCH] Add an expression for the Haskell library djinn

---
 .../libraries/haskell/djinn/default.nix       | 19 +++++++++++++++++++
 pkgs/top-level/haskell-packages.nix           |  2 ++
 2 files changed, 21 insertions(+)
 create mode 100644 pkgs/development/libraries/haskell/djinn/default.nix

diff --git a/pkgs/development/libraries/haskell/djinn/default.nix b/pkgs/development/libraries/haskell/djinn/default.nix
new file mode 100644
index 000000000000..6e8a52bb78b0
--- /dev/null
+++ b/pkgs/development/libraries/haskell/djinn/default.nix
@@ -0,0 +1,19 @@
+{ cabal, haskeline, mtl }:
+
+cabal.mkDerivation (self: {
+  pname = "djinn";
+  version = "2011.7.23";
+  sha256 = "14748pqzrd1r9jg2vc9v232pi38q99l9zdlia6ashm2v871hp1xv";
+  isLibrary = false;
+  isExecutable = true;
+  buildDepends = [ haskeline mtl ];
+  preConfigure = self.stdenv.lib.optionalString self.stdenv.isDarwin ''
+    sed -i 's/-Wall -optl-Wl/-Wall/' djinn.cabal
+  '';
+  meta = {
+    homepage = "http://www.augustsson.net/Darcs/Djinn/";
+    description = "Generate Haskell code from a type";
+    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 1810dca6c0e1..40c10e76daaa 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1008,6 +1008,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   distributive = callPackage ../development/libraries/haskell/distributive {};
 
+  djinn = callPackage ../development/libraries/haskell/djinn {};
+
   dlist = callPackage ../development/libraries/haskell/dlist {};
 
   dlistInstances = callPackage ../development/libraries/haskell/dlist-instances {};