src/Compilation.zig                     | 123 ++++++++++++++++++++++----------
 src/Sema.zig                            |  42 ++++++++---
 src/Zcu.zig                             |  86 +++++++++++++++++++---
 src/Zcu/PerThread.zig                   |   6 ++
 test/incremental/compile_error_then_log |   2 +
 test/incremental/compile_log            |  30 ++++++++
 tools/incr-check.zig                    |  47 +++++++++---
 7 files changed, 272 insertions(+), 64 deletions(-)