I've been building a similar toolchain which uses the same version of clang / libc++ / etc everywhere for my own software and things are so much more sane than

I've been building a similar toolchain which uses the same version of clang / libc++ / etc everywhere for my own software and things are so much more sane than trying to use GCC/libstdc++ on Linux, Clang/libc++ on macOS and MSVC on Windows which all have various behavior and performance divergence & pitfalls. CI still tests GCC and MSVC (except that MSVC of course has been ICE'ing on my project for the last six months), but all the releases are built with clang and my sleep quality has never been better :-)