"Alex Griffin" <a@ajgrf.com> writes:

> From 12b43fc165aafce2844f8edf9dad99f89bcad943 Mon Sep 17 00:00:00 2001
> From: Alex Griffin <a@ajgrf.com>
> Date: Sat, 12 Oct 2019 13:45:35 -0500
> Subject: [PATCH 2/3] gnu: Add ghc-unagi-chan.
>
> * gnu/packages/haskell-xyz.scm (ghc-unagi-chan): New variable.

[...]

> +(define-public ghc-unagi-chan
> +  (package
> +    (name "ghc-unagi-chan")
> +    (version "0.4.1.2")
> +    (source
> +     (origin
> +       (method url-fetch)
> +       (uri (string-append
> +             "https://hackage.haskell.org/package/unagi-chan/unagi-chan-"
> +             version
> +             ".tar.gz"))

I did not find this package in Stackage 12.26, so I guess it's OK to
take this one.  It's nice if you can prettify these lines, though :-)

> +       (sha256
> +        (base32
> +         "1lnl5n4jnjmm4chp461glcwkrrw63rjz3fvprwxcy3lkpbkrqvgn"))))
> +    (build-system haskell-build-system)
> +    (inputs
> +     `(("ghc-atomic-primops" ,ghc-atomic-primops)
> +       ("ghc-primitive" ,ghc-primitive)))
> +    (arguments
> +     `(#:tests? #f ; FIXME: Tests can't find Data.Primitive.Addr

Should this not be provided by 'ghc-primitive'?  Perhaps it is expecting
a different version?