Hi, I've just installed Gentoo 1.2 from stage1. I merged the latest GNOME 2 of date (6/11/02) without GNOME 1.4 installed, and had one problem: gnomemm wouldn't compile...it said that libsigc++ was missing (meanwhile, I had the latest version installed). To get around this, I just 'injected' the package.
fixing this and gtkmm bugs right now.
some more info perhaps :) libsigc++-1.0.x is incompatible with 1.1.x so when gtkmm depended on libsigc++ it required "any " version, and not a specific range. this is now fixed, and after that gnomemm is updated to match the gtkmm version.