Re: [gentoo-user] X won't start after xorg-server update

[Dale]

Walter Dnes wrote:
> On Sat, Mar 14, 2020 at 03:17:34PM +0100, hitachi303 wrote
>> Am 14.03.20 um 13:46 schrieb Neil Bothwick:
>>> I take it you don't have USE=libglvnd for mesa?
>> Yes I do. Since I haven't defined it in my make.conf I guess it is
>> defined by profile.
>   When I update my system, I do a pretend emerge and check for new
> packages and flags.  I saw this flag, and asked for "Mr. Google's
> opinion".  There were a few horror stories, so I added "-libglvnd" to my
> USE flags in make.conf, and things run fine after the update.  I'll
> check back later down the road, when the kinks are hopefully worked out.
>


I do similar myself.  I use the -a option that way IF, big IF,
everything looks OK I can hit y and enter to carry on without it going
through the process again.  I to look for changed USE flags.  I use euse
-i to see what they are for, which usually doesn't help much.  I then
use eix to find the package it pulls in if it is a lib<something> and
hit up the home page to see what it does.  Sometimes I let it apply then
test the software to see if I want to keep it or not.  Sometimes I
disable it in package.use for that package(s). Like you, depends on what
it does.  Sometimes I don't need that feature, sometimes I just don't
want it, sometimes it may not work here due to hardware limits.  I don't
have a mic input for example or a video camera either.  Sort of hard for
software to configure something it can't find because it doesn't exist. 
Other examples could apply as well. 

When doing upgrades, I agree it is always wise to look at all USE flag
changes.  Having USE flags is a Gentoo feature but if not monitored
correctly, it can be a curse as well.  It can cause havoc and makes
things not work correctly or add features one doesn't want. 

+1 to this.

Dale

:-)  :-)