When cross-compiling:
- Various shebangs don't point to the proper EPREFIX

On termux itself:
- dev-libs/libxml2 cannot be built (hardlinks in source tarball)
- sys-devel/libtool cannot be built (no error given...?)
- portage errors spectaularly if sys-apps/portage is anywhere in the dependency tree
- bash keeps spamming error messages: "shell-init: error retrieving current directory: getcwd: cannot access parent directories: Permission denied"
- after merging dev-lang/perl, no executable permission on /usr/bin/perl