Somewhere deep in the bowels of portage my 'introspection' useflag is vanishing -- but on just one of my three machines.
I set the introspection useflag on all three machines (two ~amd64 and one ~x86) but when I run emerge --info, only two of the machines show the introspection useflag in the output. Why? All three machines share the same /usr/portage by NFS, so they all see the same use.mask and use.force files, etc. I'm running the default linux desktop gnome profile on all three. I tried deleting my /etc/portage/* on the problem machine, which made no difference. I even tried using an empty make.conf and adding the single line USE="introspection", but that made no difference either. When I flip other useflags in make.conf the changes show up in the output of emerge --info, but not when I flip 'introspection'. Two days wasted and I'm out of ideas. Anyone understand the details of emerge --info or what I can do to diagnose this problem?