From 6aab9ba6d445d3eac32582caa045ebe88374e5aa Mon Sep 17 00:00:00 2001 From: ng0 Date: Tue, 20 Sep 2016 21:17:41 -0400 Subject: [PATCH] gnu: Add ghc-constraints. * gnu/packages/haskell.scm (ghc-constraints): 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 1586923134..91e87789dd 100644 --- a/gnu/packages/haskell.scm +++ b/gnu/packages/haskell.scm @@ -7067,4 +7067,30 @@ the classes @code{IArray} of immutable arrays and @code{MArray} of arrays mutabl within appropriate monads, as well as some instances of these classes.") (license license:bsd-3))) +(define-public ghc-constraints + (package + (name "ghc-constraints") + (version "0.8") + (source + (origin + (method url-fetch) + (uri (string-append + "https://hackage.haskell.org/package/constraints/constraints-" + version ".tar.gz")) + (sha256 + (base32 + "120mmv9rwbahslisc1z8zx9lw7v6hl5fzid4l0hiy5as6ijqgl2c")))) + (build-system haskell-build-system) + (inputs + `(("ghc-hashable" ,ghc-hashable) + ("ghc-mtl" ,ghc-mtl) + ("ghc-transformers-compat" ,ghc-transformers-compat))) + (home-page "http://github.com/ekmett/constraints/") + (synopsis "Constraint manipulation") + (description + "GHC 7.4 gave us the ability to talk about @code{ConstraintKinds}. +They stopped crashing the compiler in GHC 7.6. This package provides +a vocabulary for working with them.") + (license license:bsd-3))) + ;;; haskell.scm ends here