On Mon, Dec 04, 2017 at 04:14:48PM +0100, Clément Lassieur wrote:
> * gnu/packages/lua.scm (lua5.1-socket): Update to 3.0-rc1.
> [source]: Change upstream URI.
> [arguments]: Set INSTALL_TOP environment variable instead of INSTALL_TOP_SHARE
> and INSTALL_TOP_LIB.

Typically we don't package release candidates or beta software.
Sometimes we do, if there are critical bugs fixed in the RC that we
can't backport, or if the upstream development seems to have stalled
without issuing a final release.

Can you give more detail about this case?