From fb778b705fb24dd68651b0cf312f4412c56db213 Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Fri, 2 May 2014 13:43:34 -0500
Subject: [PATCH] Add expression for Haskell library 'these'

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

diff --git a/pkgs/development/libraries/haskell/these/default.nix b/pkgs/development/libraries/haskell/these/default.nix
new file mode 100644
index 000000000000..4962ace783c7
--- /dev/null
+++ b/pkgs/development/libraries/haskell/these/default.nix
@@ -0,0 +1,19 @@
+{ cabal, bifunctors, mtl, profunctors, semigroupoids, semigroups
+, transformers, vector
+}:
+
+cabal.mkDerivation (self: {
+  pname = "these";
+  version = "0.4.2";
+  sha256 = "0hs59i07k1lkynvdpymjvl1va2frc3aq6wyrmbi7mz3vmz0bjcp7";
+  buildDepends = [
+    bifunctors mtl profunctors semigroupoids semigroups transformers
+    vector
+  ];
+  meta = {
+    homepage = "https://github.com/isomorphism/these";
+    description = "An either-or-both data type, with corresponding hybrid error/writer monad transformer";
+    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 dd7510e4c3fa..08793d972f98 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -2551,6 +2551,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   tfRandom = callPackage ../development/libraries/haskell/tf-random {};
 
+  these = callPackage ../development/libraries/haskell/these {};
+
   thespian = callPackage ../development/libraries/haskell/thespian {};
 
   thDesugar = callPackage ../development/libraries/haskell/th-desugar {};