Re: Subdirectories in GUIX_PACKAGE_PATH

[Alex Kost <alezost@gmail.com>]

Ludovic Courtès (2017-07-03 23:53 +0200) wrote:

> Hi Alex,
>
> Alex Kost <alezost@gmail.com> skribis:
>
>> Ludovic Courtès (2017-06-30 11:35 +0200) wrote:
>
> [...]

>> I have a (probably not related) question though: in the past, package
>> 'location' contained an *absolute* file name for the packages from
>> GUIX_PACKAGE_PATH.  Now these locations are *relative* file names.  Is
>> this intended?
>>
>> If so, this is a problem for Emacs-Guix: you see, when you try to open a
>> package location (for example, by pressing an according button in *Guix
>> Package Info* buffer), it is expanded against 'guix-directory' variable.
>> So if you open "gnu/packages/guile.scm" location, it works, but now if
>> it is your location like "my-guix-packages/foo.scm", the wrong
>> (non-existent) file will be opened.  Previously it worked, because that
>> location was absolute, like "/home/me/my-guix-packages/foo.scm".
>
> I’ve noticed this but I didn’t think it was a regression.
>
> Basically Guile supports two “file name canonicalization” modes: one
> that returns a file name relative to %load-path, and one that returns an
> absolute file name.  By default, when loading modules, we’re in
> ‘relative’ mode; this is so that modules can be moved on disk and don’t
> record their initial location.

Thanks for the explanation!

> I think the last time this was changed was a year ago in
> 14d5ca2e2e57643b6b4acfb980b18b7474c27e7b.

-- 
Alex