From mboxrd@z Thu Jan  1 00:00:00 1970
From: ericbavier@openmailbox.org
Subject: Re: [PATCH] gnu: Add ghc-clock.
Date: Wed, 21 Oct 2015 22:25:07 -0500
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To: guix-devel@gnu.org, Paul van der Walt <paul@denknerd.org>

From: Eric Bavier <ericbavier@openmailbox.org>

> * gnu/packages/haskell.scm (ghc-clock): New variable.
> ---
>  gnu/packages/haskell.scm | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
> index 6aa3a91..be37c5a 100644
> --- a/gnu/packages/haskell.scm
> +++ b/gnu/packages/haskell.scm
> @@ -2445,6 +2445,28 @@ or timeout period.  This package provides alternative functions which use the
>  unbounded @code{Integer} type.")
>      (license bsd-3)))
>  
> +(define-public ghc-clock
> +  (package
> +    (name "ghc-clock")
> +    (version "0.5.1")
> +    (source
> +     (origin
> +       (method url-fetch)
> +       (uri (string-append
> +             "http://hackage.haskell.org/package/"
> +             "clock/"
> +             "clock-" version ".tar.gz"))
> +       (sha256
> +        (base32 "1ncph7vi2q6ywwc8ysxl1ibw6i5dwfvln88ssfazk8jgpj4iyykw"))))
> +    (build-system haskell-build-system)
> +    (arguments `(#:tests? #f)) ;; Testing suite depends on ghc-clock

A trick that's used with some other packages is to define an unexported
*-bootstrap package.  The ghc-clock-bootstrap package would have tests
disabled, then the ghc-clock package would inherit from the
ghc-clock-bootstrap package, declare ghc-clock-bootstrap as an input, and
enable tests.

`~Eric