diff options
| -rw-r--r-- | gnu/packages/haskell.scm | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm index 6619ec9042..599a50d3e3 100644 --- a/gnu/packages/haskell.scm +++ b/gnu/packages/haskell.scm @@ -3212,6 +3212,43 @@ where every element did not have to have an inverse, thus the name semigroup.") (license bsd-3))) +(define-public ghc-free + (package + (name "ghc-free") + (version "4.12.1") + (source + (origin + (method url-fetch) + (uri (string-append + "http://hackage.haskell.org/package/free/free-" + version + ".tar.gz")) + (sha256 + (base32 + "0sr8phvrb4ny8j1wzq55rdn8q4br23q4pw2j276npr844825jr9p")))) + (build-system haskell-build-system) + (propagated-inputs + `(("ghc-prelude-extras" ,ghc-prelude-extras) + ("ghc-profunctors" ,ghc-profunctors) + ("ghc-exceptions" ,ghc-exceptions))) + (inputs + `(("ghc-bifunctors" ,ghc-bifunctors) + ("ghc-comonad" ,ghc-comonad) + ("ghc-distributive" ,ghc-distributive) + ("ghc-mtl" ,ghc-mtl) + ("ghc-semigroupoids" ,ghc-semigroupoids) + ("ghc-semigroups" ,ghc-semigroups))) + (home-page "http://github.com/ekmett/free/") + (synopsis "Unrestricted monads for Haskell") + (description "This library provides free monads, which are useful for many +tree-like structures and domain specific languages. If @code{f} is a +@code{Functor} then the free @code{Monad} on @code{f} is the type of trees +whose nodes are labeled with the constructors of @code{f}. The word \"free\" +is used in the sense of \"unrestricted\" rather than \"zero-cost\": @code{Free +f} makes no constraining assumptions beyond those given by @code{f} and the +definition of @code{Monad}.") + (license bsd-3))) + (define-public ghc-fast-logger (package (name "ghc-fast-logger") |