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gnu: Add ghc-pretty-show.

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* gnu/packages/haskell.scm (ghc-pretty-show): New variable.
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Ricardo Wurmus 2018-02-12 21:28:29 +01:00
parent b9a64a3671
commit f30b753835
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28
gnu/packages/haskell.scm
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@ -946,6 +946,34 @@ (define-public ghc-haskell-lexer
"This package provides a fully compliant Haskell 98 lexer.")
(license license:bsd-3)))
(define-public ghc-pretty-show
(package
(name "ghc-pretty-show")
(version "1.6.12")
(source
(origin
(method url-fetch)
(uri (string-append "https://hackage.haskell.org/package/pretty-show/"
"pretty-show-" version ".tar.gz"))
(sha256
(base32
"1fblcxw4z4ry14brin1mvwccs6hqqlhi7xhwv1f23szjq25cjacn"))))
(build-system haskell-build-system)
(inputs
`(("ghc-haskell-lexer" ,ghc-haskell-lexer)
("ghc-happy" ,ghc-happy)))
(home-page "http://wiki.github.com/yav/pretty-show")
(synopsis "Tools for working with derived `Show` instances")
(description
"This package provides a library and an executable for working with
derived @code{Show} instances. By using the library, derived @code{Show}
instances can be parsed into a generic data structure. The @code{ppsh} tool
uses the library to produce human-readable versions of @code{Show} instances,
which can be quite handy for debugging Haskell programs. We can also render
complex generic values into an interactive Html page, for easier
examination.")
(license license:expat)))
(define-public ghc-haskell-src-exts
(package
(name "ghc-haskell-src-exts")