diff options
Diffstat (limited to 'gnu/packages/haskell.scm')
| -rw-r--r-- | gnu/packages/haskell.scm | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm index a30b4376eb..19cd39e690 100644 --- a/gnu/packages/haskell.scm +++ b/gnu/packages/haskell.scm @@ -11563,6 +11563,32 @@ stand for certain ASCII character sequences, i.e. → instead of @code{->}, ∀ instead of @code{forall} and many others.") (license license:bsd-3))) +(define-public ghc-validity + (package + (name "ghc-validity") + (version "0.7.0.0") + (source + (origin + (method url-fetch) + (uri (string-append + "https://hackage.haskell.org/package/validity/validity-" + version + ".tar.gz")) + (sha256 + (base32 + "0xribw98amafihw87ddajk6vlirp7w9b26lrnjgq7jfm4710j95f")))) + (build-system haskell-build-system) + (native-inputs `(("ghc-hspec" ,ghc-hspec) + ("hspec-discover" ,hspec-discover))) + (home-page + "https://github.com/NorfairKing/validity") + (synopsis "Validity typeclass") + (description + "Values of custom types usually have invariants imposed upon them. This +package provides the @code{Validity} type class, which makes these invariants +explicit by providing a function to check whether the invariants hold.") + (license license:expat))) + (define-public ghc-stylish-haskell (package (name "ghc-stylish-haskell") |