diff options
Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/packages/haskell.scm | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm index 0b80b3b9a5..d606d48fbd 100644 --- a/gnu/packages/haskell.scm +++ b/gnu/packages/haskell.scm @@ -2479,6 +2479,33 @@ in the @code{IO} monad, like @code{IORef}s or parts of the OpenGL state.") (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") |