Re: [gentoo-portage-dev] /etc/make.profile/use.defaults

[Andrew Gaffney <agaffney@skylineaero.com>]

Andrew Gaffney wrote:
> Pieter Van den Abeele wrote:
> 
>>
>> On 12 May 2004, at 16:43, Andrew Gaffney wrote:
>>
>>> Pieter Van den Abeele wrote:
>>>
>>>> On 12 May 2004, at 08:42, Andrew Gaffney wrote:
>>>>
>>>>> agaffney@kagome dev $ ./portage.pl x11-base/xfree | sort -u
>>>>> x11-base/xfree-4.3.0-r5
>>>>> x11-misc/ttmkfdir-3.0.9-r1
>>>>
>>>>
>>>> ttmkfdir is an xfree compile time dependency, so it has to be 
>>>> installed before xfree and not after :-)
>>>
>>>
>>>
>>> I know. Like I said, my program currently only prints dependencies 
>>> instead of tracking them in an array or hash, so it can't eliminate 
>>> duplicates. Because of this, I ran the output through 'sort -u' which 
>>> put them in alphabetical order instead of dependency order.
>>
>>
>>
>> ok, that's what happens when you write email late in the morning :-)
> 
> 
> I've come across another issue. 'emerge -epvt xfree' shows that python 
> wants to install tcl and tk because of the 'tcltk' USE flag where my 
> program doesn't. That USE flag is not defined in my 
> /etc/make.profile/make.defaults or /etc/make.conf. 'ufed' shows that it 
> is defined in /etc/make.profile/use.defaults. I've never come across 
> this file before. What does it do?

Nevermind. From 'man portage':

use.defaults
     Here  we  DO  NOT  define  the  default  USE flags, but the so-called
     auto-USE flags.  This rather unknown portage feature activates a USE
     flag if a specific package is installed and the flag  was  not  explicitly
     deactivated.  This file contains the associations between USE flags and
     packages that trigger the auto-USE feature.

     In other words, if we never put "sdl" or "-sdl" into our USE, but we have
     media-libs/libsdl emerged, then portage automagically sticks "sdl" into our
     USE for us.

     Format:
     - comments begin with #
     - one USE flag per line with a list of DEPEND atom bases

     Example:
     # media-libs/libsdl will activate "sdl"
     sdl        media-libs/libsdl
     # activate tcltk only if we have both
     # dev-lang/tcl and dev-lang/tk
     tcltk      dev-lang/tcl   dev-lang/tk

That makes sense, but shouldn't Portage not use these when operating with the 
'--emptytree' flag since it pretends that nothing is installed?

-- 
Andrew Gaffney
Network Administrator
Skyline Aeronautics, LLC.
636-357-1548


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