I am trying to use sccache across network namespaces and realized it is hard coded to use the loopback. Would you all be willing to take patches for specifying a command line option or environmental variable that would accept a unix socket path to use for listening and connecting?

Lets call this option "-L", "--listen-on-path" it would need to be compiled out for windows, but there are already code that uses
#[cfg(not(windows))]

Alternatively to keep the flags the same across operating systems, it could just be set with an environment variable: SCCACHE_UNIX_LISTEN.