From a88067e6da4059b5532537dd4732ab3b81326727 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Wed, 19 Mar 2014 11:44:50 +0100
Subject: [PATCH] haskell-dlist-instances: add version 0.1

---
 .../libraries/haskell/dlist-instances/default.nix  | 14 ++++++++++++++
 pkgs/top-level/haskell-packages.nix                |  2 ++
 2 files changed, 16 insertions(+)
 create mode 100644 pkgs/development/libraries/haskell/dlist-instances/default.nix

diff --git a/pkgs/development/libraries/haskell/dlist-instances/default.nix b/pkgs/development/libraries/haskell/dlist-instances/default.nix
new file mode 100644
index 000000000000..d168c4b35831
--- /dev/null
+++ b/pkgs/development/libraries/haskell/dlist-instances/default.nix
@@ -0,0 +1,14 @@
+{ cabal, dlist, semigroups }:
+
+cabal.mkDerivation (self: {
+  pname = "dlist-instances";
+  version = "0.1";
+  sha256 = "0r1j7djywqd7c224wc9ixkplj3m2mbf9k3ra7n92ja2kfpksm615";
+  buildDepends = [ dlist semigroups ];
+  meta = {
+    homepage = "https://github.com/gregwebs/dlist-instances";
+    description = "Difference lists instances";
+    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 4fdc5058f5f6..15ba3d011616 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -990,6 +990,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   dlist = callPackage ../development/libraries/haskell/dlist {};
 
+  dlistInstances = callPackage ../development/libraries/haskell/dlist-instances {};
+
   dns = callPackage ../development/libraries/haskell/dns {};
 
   doctest = callPackage ../development/libraries/haskell/doctest {};