Force qs:quickload load the system from a particular dist

[ryukinix]

This would ensure that the load system indeed it's from expected dist.

It seems Fukamachi know how to do that at Qlot

[ryukinix]

good reference here: https://github.com/ultralisp/quickdist#priorities-of-distributions

When multiple distributions provide the same system, the latest installed distribution is prefered by default. If this is not what you want, you can inspect priorities with (ql-dist:preference (ql-dist:find-dist "{dist}"))) and set them with setf. For a finer-grained control projects (ql-dist:find-release-in-dist) and systems (ql-dist:find-system-in-dist) have preferences too.