use_desc_gen --repo_path ~/work/gentoo-x86/ --category_path tmp.categories >> tmp.use.local.desc is how I'd like to use it providing a temporary category file to it which basically just lists the categories that have been converted properly. Probably would be reasonable to rename the option to --category_file..
Fixed in CVS
Not that I really know python... but line 34 of use_desc_gen says category_path while the other stuff says category_file.. might be an issue? Also, should I be running use_desc_gen or use_desc_gen.py directly?