Hi, So zig testing result is the following: -Dskip-libc does not work, my best result is with -Dskip-non-native. -Dskip-non-native fails with "libc headers note" test from `compile_errors.zig` (I had to comment it around line 2750) and std library tests also fails instantaneously. So I suggest the following test command for now: `zig build -Dskip-non-native test-toolchain` with a patch to disable that failing test. This will test everything except the std library and docs.