GNU bug report logs - #50836
[PATCH 0/5] Python logic programming packages

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From: Maxime Devos <maximedevos <at> telenet.be>
To: Ryan Prior <rprior <at> protonmail.com>, 50836 <at> debbugs.gnu.org
Subject: [bug#50836] [PATCH 1/5] gnu: Add python-multipledispatch.
Date: Mon, 27 Sep 2021 12:28:23 +0200

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Ryan Prior via Guix-patches via schreef op ma 27-09-2021 om 02:20 [+0000]:
> * gnu/packages/python-xyz.scm (python-multipledispatch): New variable.
> ---
>  gnu/packages/python-xyz.scm | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
> index a34c444a87..c833c95b5a 100644
> --- a/gnu/packages/python-xyz.scm
> +++ b/gnu/packages/python-xyz.scm
> @@ -26584,6 +26584,26 @@ objects in the combined source, and how they define or use each other.  The
>  graph can be output for rendering by GraphViz or yEd.")
>      (license license:gpl2)))
> 
> +(define-public python-multipledispatch
> +  (package
> +    (name "python-multipledispatch")
> +    (version "0.6.0")
> +    (source
> +     (origin
> +       (method url-fetch)
> +       (uri (pypi-uri "multipledispatch" version))
> +       (sha256
> +        (base32
> +         "1slblghfjg9fdi9zpd7gmrkvfbv20nrdgnrymcnbky8bzm8i9ax7"))))
> +    (build-system python-build-system)
> +    (propagated-inputs `(("six" ,python-six)))

The convention is to use the package name of the input package as input
label ("python-six" instead of "six" in this case).  This is important for
the "guix style" in <https://issues.guix.gnu.org/49169>, which, when it will
be in master, allows writing this package definition as

(define-public python-multipledispatch
  (package
    (name "python-multipledispatch")
    ...
    (propagated-inputs (list python-six))
    ...))

(The long-term goal appears to be to remove input labels completely.)

Greetings,
Maxime.

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