VS: COM calls to Visual Studio Installer hang occasionally
cmVSSetupAPIHelper is used to look for VS 2017 instances and was created because vshwere did not exist at the time. I've discovered that the COM
ParseVersion hangs once in a while due to threading interactions with libuv's use of
QueueUserWorkItem's thread pool (whose threads to not initialize COM via CoInitializeEx).
Hopefully someone with suitable knowledge of COM can help out here.
Another approach is to investigate removing
cmVSSetupAPIHelper altogether and using
vshwere instead, now that it exists.