[PATCH 2/2] gnu: ghc-mtl: Upgrade to 2.2.1.

[James David Trotter]

* gnu/packages/haskell.scm (ghc-mtl): Upgrade to 2.2.1.
---
 gnu/packages/haskell.scm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 33d58f4..c5dcbf3 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -485,7 +485,7 @@ Polymorphism\", by Mark P Jones, in Advanced School of 
Functional Programming,
 (define-public ghc-mtl
   (package
     (name "ghc-mtl")
-    (version "2.1.3.1")
+    (version "2.2.1")
     (outputs '("out" "doc"))
     (source
      (origin
@@ -496,8 +496,9 @@ Polymorphism\", by Mark P Jones, in Advanced School of 
Functional Programming,
              ".tar.gz"))
        (sha256
         (base32
-         "1xpn2wjmqbh2cg1yssc6749xpgcqlrrg4iilwqgkcjgvaxlpdbvp"))))
+         "1icdbj2rshzn0m1zz5wa7v3xvkf6qw811p4s7jgqwvx1ydwrvrfa"))))
     (build-system haskell-build-system)
+    (propagated-inputs `(("ghc-transformers" ,ghc-transformers)))
     (home-page "http://github.com/ekmett/mtl";)
     (synopsis
      "Monad classes, using functional dependencies")
-- 
2.4.3