[SOLVED] Listing up all USE flags based on current setting

[jryu]

IIUC, set of selected USE flags are sum of all flags in all make.defaults listed in /etc/portage/make.profile points +/- what's in make.conf

Is there a tool which sums up current set of USE flags for me, so that I can focus on those when editing make.profile?

[NeddySeagoon]

jryu,

Welcome to Gentoo

Do not edit make.profile. make.profile is a symbolic link into /user/portage, so it gets updated with emerge --sync, then all your changes will be lost.

Use flags are 'stacked' as you say.
At the top are the settings in your profile - do not mess with these.
Next, are the USE settings in make.conf. Here you can turn flags on an off.
Further down still is /etc/portage/package.use. Per package USE settings go here.
Last are USE flags on the command line. Doing this is normally a very bad idea as portage will not store these settings

There are several USE flag editors in portage. ufed and profuse come to mind..
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[jryu]

oh, yes. tools like ufed and profuse are what I was looking for.

[EmaRsk]

Another one is euse: "euse -i" does exactly what you asked for.
And, though not for this exact task, equery is also useful.
They're both from app-portage/gentoolkit.