`--chain=<file>` should allow to redefine the client specs
Just like --chain=gdev_live
allows to redefine the client specs using CLIENT_SPEC
environment variable, we should be able to do the same using --chain=<file>
.
This is mandatory to be able to release a new client with just the client specs being changed (while the genesis remains identical). See this comment for more details.
Edited by Cédric Moreau