zig-mach and zls version ?

The tagged zls versions don't compile with the zig-mach version (

zig-macos-aarch64-0.14.0-dev.2577+271452d22/

What seems to work is get year/month from the zig version and guess a hash from
master from that month, eg 76e59de6  seems to compile for above version.

Eventually it makes sense to publish this hash to make it easier for users.