Sometimes it is needed to extract the contents of a rpm, ipk or deb package without installing it or its dependencies.
Sent patches to the mailing list: http://lists.openembedded.org/pipermail/openembedded-core/2016-May/121326.html
Sent v2: http://lists.openembedded.org/pipermail/openembedded-core/2016-May/121422.html
This has been solved in commits: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=c5aa5246e0177e2a7c08891c690479d94cf04c0d http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=b372a828182b924a8118c6cf4c7b45a7a093704b http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=0ff3f495ca4fb22a49791bf484416ac2e486d854