51/177: gnu: Add ghc-haskell-src-exts-util.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit 3657bd1faa16d8a074c8867b6d9bb550bd415858
Author: Ricardo Wurmus <address@hidden>
Date:   Mon Feb 12 21:58:30 2018 +0100

    gnu: Add ghc-haskell-src-exts-util.
    
    * gnu/packages/haskell.scm (ghc-haskell-src-exts-util): New variable.
---
 gnu/packages/haskell.scm | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index b08a269..e9e46a3 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -1012,6 +1012,32 @@ are supported.  Apart from these standard extensions, it 
also handles regular
 patterns as per the HaRP extension as well as HSX-style embedded XML syntax.")
     (license license:bsd-3)))
 
+(define-public ghc-haskell-src-exts-util
+  (package
+    (name "ghc-haskell-src-exts-util")
+    (version "0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/";
+                           "haskell-src-exts-util/haskell-src-exts-util-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "14rhwcrdz3kfb69c64qn8kybl7wnpajrjlfz5p95ca4bva4mwclg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default" ,ghc-data-default)
+       ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-uniplate" ,ghc-uniplate)))
+    (home-page "https://github.com/pepeiborra/haskell-src-exts-util";)
+    (synopsis "Helper functions for working with haskell-src-exts trees")
+    (description
+     "This package provides helper functions for working with
address@hidden trees.")
+    (license license:bsd-3)))
+
 (define-public hlint
   (package
     (name "hlint")