Can't build Inkscape 1.3 without unmasking newer versions of boost that have stacktrace USE-flag. Why is it: COMMON_DEPEND= ... dev-libs/boost:=[stacktrace(-)] And not just: COMMON_DEPEND= ... dev-libs/boost121
*hotfix And not just: COMMON_DEPEND= ... dev-libs/boost
Because it needs Boost with USE=stacktrace, and if the flag isn't there, it's not enabled. I'm not sure what the question is here.