[bug#43193] [PATCH] guix: Add --with-dependency-source option

["Ludovic Courtès" <ludo@gnu.org>]

Hi,

Jesse Gibbons <jgibbons2357@gmail.com> skribis:

> On 9/11/20 9:43 AM, Ludovic Courtès wrote:

[...]

>> So maybe drop the second clause for non-recursive replacement, and drop
>> ‘transform-package-source’ as well.
> I included a fallback to transform-package-source because the
> following happens:
>
> $ ./pre-inst-env guix build --with-source=$(guix build --source hello) hello
> guix build: error: invalid source replacement specification:
> "/gnu/store/hbdalsf5lpf01x4dcknwx6xbn6n5km6k-hello-2.10.tar.gz"
>
> This does not fail when I fall back to the non-recursive logic.
>
> I can drop transform-package-source, but I will need to do some more
> hacking to figure out how the package name and version are parsed from 
> the file name as described in the manual, and move it to the logic in
> transform-package-inputs/source.

Yes, that’d be nice.  Namely, if you do:

  guix build hello --source=hello-1.2.3.tar.gz

it should work just as now (from the source file name, we assume that
the source applies to package “hello”).

Conversely, doing:

  guix build hello --source=xyz-hello-1.2.3.tar.gz

would have no effect.  It would not even emit a warning, unlike now.

> I'm not going to have as much free time starting next week, so I might
> not be able to do that for a while, but I will try to get it done
> ASAP.

Sure, let’s stay in touch, I think we’re almost done!

Thank you,
Ludo’.