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gnu: Add ghc-contravariant.

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* gnu/packages/haskell.scm (ghc-contravariant): New variable.
This commit is contained in:
Paul van der Walt 2015-10-15 14:36:19 +02:00
parent f271524a14
commit 624efe7304
1 changed files with 27 additions and 0 deletions
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27
gnu/packages/haskell.scm
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@ -2479,6 +2479,33 @@ (define-public ghc-bifunctors
(description "This package provides bifunctors for Haskell.")
(license bsd-3)))
(define-public ghc-contravariant
(package
(name "ghc-contravariant")
(version "1.3.3")
(source
(origin
(method url-fetch)
(uri (string-append
"http://hackage.haskell.org/package/contravariant/contravariant-"
version
".tar.gz"))
(sha256
(base32
"184hcmhsznqrkmqlc1kza9pb5p591anva574ry8wrh81vqmhwfb5"))))
(build-system haskell-build-system)
(propagated-inputs
`(("ghc-void" ,ghc-void)
("ghc-transformers-compat" ,ghc-transformers-compat)
("ghc-statevar" ,ghc-statevar)))
(inputs
`(("ghc-semigroups" ,ghc-semigroups)))
(home-page
"http://github.com/ekmett/contravariant/")
(synopsis "Contravariant functors")
(description "Contravariant functors for Haskell.")
(license bsd-3)))
(define-public ghc-semigroups
(package
(name "ghc-semigroups")