* gnu/packages/haskell.scm (ghc-happy): New variable.
---
gnu/packages/haskell.scm | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 27971c4..834e6ad 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -437,6 +437,33 @@ them.")
"This library provides an easy way to define command line parsers.")
(license bsd-3)))
+(define-public ghc-happy
+ (package
+ (name "ghc-happy")
+ (version "1.19.5")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append
+ "http://hackage.haskell.org/package/happy/happy-";
+ version
+ ".tar.gz"))
+ (sha256
+ (base32
+ "1nj353q4z1g186fpjzf0dnsg71qhxqpamx8jy89rjjvv3p0kmw32"))))
+ (build-system haskell-build-system)
+ (arguments `(#:tests? #f)) ;; cannot satisfy -package mtl. Possible Cabal
+ ;; issue.
+ (propagated-inputs
+ `(("ghc-mtl" ,ghc-mtl)))
+ (home-page
+ "https://hackage.haskell.org/package/happy";)
+ (synopsis "Parser generator for Haskell")
+ (description "Parser generator for Haskell. Given a grammar specification
+in BNF, Happy generates Haskell code to parse the grammar. Happy works in a
+similar way to the yacc tool for C.")
+ (license bsd-3)))
+
(define-public ghc-cpphs
(package
(name "ghc-cpphs")
--
2.6.1
