Created attachment 872128 [details, diff] sogo-5.2.0.ebuild patch I tried installing gnustep-apps/sogo-5.2.0 on a system that didn't happen to have dev-libs/libzip already installed anyway, and got a "<zip.h> include file missing" compile error. Adding dev-libs/libzip to sogo's RDEPEND fixes this issue for me. Also, <ytnef.h> is complained about, which is fixed by depending on net-mail/ytnef.