Re: emacs.scm: Suggest add emacs-next or emacs-snapshot

[ludo@gnu.org (Ludovic Courtès)]

Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de> skribis:

> Feng Shu <tumashu@163.com> writes:
>
>> ludo@gnu.org (Ludovic Courtès) writes:
>>
>>> Currently you have to do:
>>>
>>>   guix package -i $(guix build emacs --with-source=…/emacs-20151111.tar.gz)
>>>
>>> Not as convenient as one would like.  I guess we could add --with-source
>>> directly in ‘guix package’.
>>
>> I agree and suggest add a way which can override name and verison, for
>> example:
>>
>>   guix package -i emacs-snapshot --with-source=/path/to/emacs.git --override-name=emacs-snapshot --override-version=20151111
>
> I don’t like to add override-name and override-version flags.  They
> don’t seem very useful.  After all, every different build gets its own
> directory in the store, so “override-version” seems to be useless.
>
> “override-name” just duplicates the package name, so I fail to see how
> it would be an improvement.

Currently the name and version are inferred from the file/directory name
passed to --with-source.  That seemed like a simple UI, at the expense
of less flexibility compared to what Feng Shu proposes.

It’s always possible to do something arbitrarily complex and then use
‘guix package --install-from-file’.

What’s missing though is the ability to pass --with-source to ‘guix
package’.

> I do agree that it would be a little nicer if we could build and install
> a package from a directory, rather than just from a tarball.

It’s already possible, but its name must match the package name.

Thanks,
Ludo’.