GNU bug report logs - #44030
guix import pypi foo@1.2.3 breaks

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From: zimoun <zimon.toutoune <at> gmail.com>
To: Lulu <me <at> erkin.party>, "guix-patches <at> gnu.org" <guix-patches <at> gnu.org>
Subject: bug#44030: [PATCH] guix: import: Add versioning syntax to pypi importer.
Date: Mon, 26 Oct 2020 16:49:14 +0100

Hi,

Thank you for working on this.

On Sun, 25 Oct 2020 at 23:04, Lulu <me <at> erkin.party> wrote:
> Ah, heck, I used an old revision of the file when I generated the diff.
> Sorry about that. Here's the properly working patch:

That’s fine.  Usually to ease the reading, it is a good habit to
increase the version of the patch, (see the option ’reroll-count’ of
git-format-patch). 


However, the 2 patches are not proper commit, right?  You can locally
commit your changes and send them.  Basically, it means the same thing
but including the commit message.  Here it looks like:

--8<---------------cut here---------------start------------->8---
import: pypi: Allow ’@’ for specifying the version.

Fixes <https://bugs.gnu.org/44030>.

* guix/import/pypi.json (pypi-fetch): Allow ’@’ for specifying the
  version.
--8<---------------cut here---------------end--------------->8---

Well, I let you find more inspiration in previous commit messages. ;-)


> diff --git a/guix/import/pypi.scm b/guix/import/pypi.scm
> index 15116e349d..1ec1ecbfa1 100644
> --- a/guix/import/pypi.scm
> +++ b/guix/import/pypi.scm
> @@ -118,13 +118,15 @@
>  
>  (define (pypi-fetch name)
>    "Return a <pypi-project> record for package NAME, or #f on failure."
> -  (and=> (json-fetch (string-append "https://pypi.org/pypi/" name "/json"))
> -         json->pypi-project))
> +  ;; Convert @ in package name to / to access the correct URL.
> +  (let ((versioned-name (string-join (string-split name #\@) "/")))
> +    (and=> (json-fetch (string-append "https://pypi.org/pypi/" versioned-name "/json"))
> +           json->pypi-project)))

If you feel adventurous, you could try to add a test in the file
“tests/pypi.scm”. :-)

>  ;; For packages found on PyPI that lack a source distribution.
>  (define-condition-type &missing-source-error &error
>    missing-source-error?
> -  (package  missing-source-error-package))
> +  (package missing-source-error-package))

Why is this line modified?


>  (define (latest-source-release pypi-package)
>    "Return the latest source release for PYPI-PACKAGE."
> @@ -371,7 +373,7 @@ be extracted in a temporary directory."
>                   (invoke "tar" "xf" archive "-C" dir)))
>             (let ((requires.txt-files
>                    (find-files dir (lambda (abs-file-name _)
> -		                    (string-match "\\.egg-info/requires.txt$"
> +                                    (string-match "\\.egg-info/requires.txt$"

Idem.


All the best,
simon

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