[bug#47870] [PATCH 1/2] gnu: polkit-gnome: Add autostart .desktop file.

[Leo Prikler <leo.prikler@student.tugraz.at>]

Hi Brendan,

Am Montag, den 19.04.2021, 08:56 +0200 schrieb Brendan Tildesley:
> > On 04/18/2021 5:52 PM Leo Prikler <leo.prikler@student.tugraz.at>
> > wrote:
> > 
> >  
> > Hi,
> > 
> > Am Sonntag, den 18.04.2021, 17:15 +0200 schrieb Brendan Tildesley:
> > > > On 04/18/2021 4:47 PM Leo Prikler <
> > > > leo.prikler@student.tugraz.at>
> > > > wrote:
> [...]
> > > On second thought perhaps another option is just to use the MATE
> > > polkit
> > > agent instead? I tested it for changing network manager and it
> > > worked
> > > just the same, only the GUI looks slightly different. I was
> > > searching
> > >  What do you think?
> > If it works for XFCE, why not?  Given that polkit-gnome has no
> > dependents other than itself, should we perhaps also look into
> > removing
> > it?
> > 
> One issue is that mate-polkit's .desktop file has the line
> OnlyShowIn=MATE;
> This prevents it from being launched in any other desktop. When
> multiple 
> desktops are installed all these files sit in /run/current-
> desktop/profile/etc/
> and rely these lines to make them not appear in other desktops.
> 
> I made a couple patches [attached] that adds XFCE to the the
> .desktop's OnlyShowIn.
> It's a little ugly though. 
This may potentially be bikeshedding, but what about defining a
(potentially hidden) package, that inherits from mate-polkit (call it
mate-polkit-for-xfce) and installs a .desktop file, that replaces MATE
with XFCE?  Ah, well, you'd also have to move the desktop file to a
different location for there not to be a name clash.

Other than that, the contents of your patches LGTM, but the ChangeLog
is on a pretty verbose end.  For instance, the message for 0001 should
likely be rewritten as:

----
gnu: polkit-mate: Enable autostarting in XFCE.

Add XFCE to the OnlyShowIn field of the autostart .desktop file so it
will be started by XFCE as well.  This is for the same of making
polkit-mate the de facto polkit agent for XFCE in Guix, since XFCE does
not ship its own.

A potential downside might be, that this desktop file ends up in the
current system profile and can therefore be seen in XFCE
configurations, that did not ask for it.

* gnu/packages/mate.scm (polkit-mate)[#:phases]: Add 'patch-desktop-
for-xfce'.
----

You could also write significantly shorter commit messages, since
"Enable autostarting in XFCE" already tells you everything the patch
does.

Regards, Leo