Wow, it's already 20 years. Was setting up distcc in my first job, with ccache for armcc. Good times, great experience. This was a life-safer in terms of compilation speed (just needed wait 20 mins for consolidation and like the same or more for loading symbols to the debugger, which was bearable comparing to spending another 2 or 3 hours taken by compilation). Having the opportunity, would like to thank you!
I have a new project that is in a somewhat similar space of wrapping compilers: https://github.com/sourcefrog/cargo-mutants, a mutation testing tool for Rust.