When using a gomote, I often want a tight edit/push/test cycle, but the current behavior of gomote push makes this difficult. Specifically, because gomote push deletes all files from the remote tree that aren't in the local tree, I have to re-run a full make.bash every time I edit something and push, rather than just re-running the one test I care about. In general, deleting these files is clearly the right behavior, so I'm not sure what the answer is. Perhaps it shouldn't delete the build-generated files, such as go/src/runtime/internal/sys/zversion.go and maybe go/src/cmd/cgo/zdefaultcc.go and go/src/go/build/zcgo.go. Or perhaps we need to tweak the build process to be more friendly to cleaning the tree. The VERSION file may also be involved.

/cc @bradfitz