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Subject: Re: [gentoo-user] slot conflict for the same package: how to add a
 USE flag?
To: gentoo-user@lists.gentoo.org
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From: "Matt Connell (Gmail)" <matthewdconnell@gmail.com>
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Date: Wed, 20 May 2020 14:51:47 -0500
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On 2020-05-20 14:46, n952162 wrote:
> You're saying, if I don't recognize it, I can remove
> it from the list?

The world file should contain only *selected* packages, meaning packages 
you explicitly, purposefully chose and installed.  That way you let 
portage handle all your dependencies.

"selected" is the language from the emerge man page for adding/removing 
packages from the world file.  You can use emerge --deselect if you 
don't feel comfortable removing these entries by hand in a text editor.