Profiles use.mask File

The use.mask file can be used to mark USE flags as unavailable on a particular profile. This can be useful for various reasons:

Note that use.mask is a per-flag thing, not per package's use of a given flag. This is one of the reasons that USE flags must have a specific well defined purpose.

Updates to use.mask should be handled via the relevant arch team. Any additions are sorted chronologically, starting at the top of the file (underneath any comment header blocks).

See noblah USE Flags for more discussion.