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[bug#66359] meaning of %something? (was Re: [bug#66359] [PATCH] gnu: cur
From: |
Simon Tournier |
Subject: |
[bug#66359] meaning of %something? (was Re: [bug#66359] [PATCH] gnu: curl: Update to 8.3.0.) |
Date: |
Mon, 09 Oct 2023 14:33:19 +0200 |
Hi Liliana,
On Fri, 06 Oct 2023 at 11:55, Liliana Marie Prikler <liliana.prikler@gmail.com>
wrote:
>> Well, %something is usually for "global" parameters. At least, that
>> the convention with Guix. Therefore, I would suggest to not use it
>> in order to avoid confusion.
>
> As far as I understand %something means "implementation detail" and
> *something* means global, important something, but I might be mistaken
> about that.
For your information, what the Cookbook says about %something:
The percentage % is typically used for read-only global
variables in the build stage. Note that it is merely a
convention, like _ in C. Scheme treats % exactly the same as any
other letter.
https://guix.gnu.org/cookbook/en/guix-cookbook.html#A-Scheme-Crash-Course
I think your change using ’%version’ in some let-binding is not
consistent with the rest.
Well, I have seen you already pushed this change. Not an issue at all,
I can easily live with it. :-)
My aim with this message is only to communicate on some practises.
Maybe something should be raised on guix-devel. Well, if you and I,
both spending some time working on Guix do not have the same
understanding for %something, then it means something is poorly
documented somewhere. :-)
WDYT about adding a paragraph about %something under,
https://guix.gnu.org/manual/devel/en/guix.html#Coding-Style
?
Cheers,
simon