display manager integration

[Brian J. Tarricone]

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On 1/26/2006 2:40 PM, Benedikt Meurer wrote:
> Brian J. Tarricone wrote:
>>>>> Not sure, but it seems like display managers are standardising on
>>>>> /usr/share/xsessions and .desktop files for session data.  Should we be
>>>>> installing xfce.desktop unconditionally into /usr/share/xsessions now?
>>>> /usr/share/xsessions doesn't seem to be a good idea. I'd suggest to 
>>>> install to $(datadir)/xsessions instead.
>> How is that really useful?  If I install to /opt/xfce4, I seriously
>> doubt the display manager is going to look there.  Unless they're
>> obeying XDG_DATA_DIRS, which instinct tells me they're not.
> 
> Well, then you'll have to copy the file to /usr/share/xsessions. That's 
> the usual procedure. Installing random stuff to /usr is certainly not a 
> sane idea, I don't want any application to install stuff there, esp. if 
> I specify --prefix=/some/where/else. Even worse, no login manager on my 
> system would look into /usr/share/xsessions, this seems to vary among 
> systems, e.g. /usr/share/xsessions, /usr/X11R6/share/xsessions, 
> /opt/gnome/share/xsessions and /usr/pkg/share/xsessions seem to be the 
> most common locations today.
> 
> For example the installer tries to auto-detect the xsessions directory 
> and install the xfce4.desktop file to it. But if you add auto-detection 
> to configure, make it optional and disabled by default to avoid 
> unexpected results (i.e. installing stuff outside $prefix and thereby 
> probably overriding existing xfce4.desktop files or whatever is not very 
> user-friendly/packager-friendly for an autoconf-based software package).

So, in other words... Just install to $datadir and let the distros patch
to their heart's content since they know better than anyone what their
packages do.

	-b

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