[gentoo-dev] Checking availability of a package from an ebuild

[gentoo-dev] Checking availability of a package from an ebuild

[Dan Armak]

Hi all,

This may be trivial, but I can't find out how to do it. How can I check from 
within an ebuild whether or not a package is installed? For example whether 
virtual/x11 is available. (Even if it's not in USE).


-- 

Dan Armak
Gentoo Linux Developer
Matan, Israel

Re: [gentoo-dev] Checking availability of a package from an ebuild

[Ben Lutgens]

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On Wed, Jul 18, 2001 at 10:30:42AM +0300, Dan Armak wrote:
>Hi all,
>
>This may be trivial, but I can't find out how to do it. How can I check from 
>within an ebuild whether or not a package is installed? For example whether 
>virtual/x11 is available. (Even if it's not in USE).

emerge --pretend

>
>
>-- 
>
>Dan Armak
>Gentoo Linux Developer
>Matan, Israel
>
>_______________________________________________
>gentoo-dev mailing list
>gentoo-dev@cvs.gentoo.org
>http://cvs.gentoo.org/mailman/listinfo/gentoo-dev

-- 
Ben Lutgens		
Sistina Software Inc.	
Kernel panic: I have no root and I want to scream

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Re: [gentoo-dev] Checking availability of a package from an ebuild

[Dan Armak]

On Wednesday 18 July 2001 17:03, you wrote:
> On Wed, Jul 18, 2001 at 10:30:42AM +0300, Dan Armak wrote:
> >Hi all,
> >
> >This may be trivial, but I can't find out how to do it. How can I check
> > from within an ebuild whether or not a package is installed? For example
> > whether virtual/x11 is available. (Even if it's not in USE).
>
> emerge --pretend

No I mean when _writing_ an ebuild, I want it to do different things based on 
whether some packages are installed.
-- 

Dan Armak
Gentoo Linux Developer
Matan, Israel

Re: [gentoo-dev] Checking availability of a package from an ebuild

[Daniel Robbins]

On Wed, Jul 18, 2001 at 10:30:42AM +0300, Dan Armak wrote:
> Hi all,
> 
> This may be trivial, but I can't find out how to do it. How can I check from 
> within an ebuild whether or not a package is installed? For example whether 
> virtual/x11 is available. (Even if it's not in USE).

We don't have this functionality, and there's a reason for that -- a package's
capabilities should be determined by USE variables, not what packages currently
happen to be installed.  Without this, we cannot generate consistent .tbz2 
images.  Is there some reason why USE functionality won't work?

Best Regards,

-- 
Daniel Robbins					<drobbins@gentoo.org>
President/CEO					http://www.gentoo.org 
Gentoo Technologies, Inc.