[gentoo-portage-dev] Is there a tool to manage USE flags? (use-config?)

[m h]

Other than a text editor?

I'd like to have a tool that can add USE flags on a per package or
global level.  (I'm doing this in some build scripts and would prefer
just to have a tool, rather than sed or some other shell hackery).

I couldn't find anything via a quick search on google.

Here's my interface:

use-config --add --component sys-devel/gcc --flag fortran

(adds the fortran USE flag to package.use for gcc)

A --remove would remove the fortran USE flag, and --unset would put
"-fortran" instead.  A --global would update make.conf instead of
package.use.

Make sense?  Are there other features that people would want?

Unless this already exists, I'll probably create a tool for this.

-matt
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