I tried with emacs 24.3.1 and the latest Geiser (from
<https://github.com/jaor/geiser>).

> Besides, I like M-x guix-generations, pretty cool.  :-)
>
>> Also I would like to add support for deleting generations (to
>> "guix.el"), so I think it would be good to export ‘delete-generation’
>> from "scripts/package.scm".  WDYT?
>
> Yes, that makes sense, one could use it from the *Guix Generation List*
> buffer.

Yes, that's what I had in mind: mark generations with "d" and execute a
deletion operation with "x".

> Regarding package installation/removal/upgrade, I think it would be
> great UI-wise to support transactions that perform multiple operations.
>
> I was initially thinking of something similar to what package.el does:
> marks packages from installation/removal, and then hit ‘x’ to execute
> the transaction.  So the current “Install” and “Delete” buttons could be
> changed to just mark things for installation/removal.

It is already available in a “*Guix Package List*” buffer: you can mark
packages with "d"/"i"/"^" ("u" is for unmarking) and execute an
operation with "x".  As for me, I prefer to keep buttons in a “*Guix
Package Info*” buffer as they are now.  It's just an alternative way to
install/delete a package: if you want to make a transaction of several
actions – use a "list" buffer, if you just want to install some package,
you can do it by pressing a button in "info" buffer.

--
Alex Kost