Find a way to distribute zip with the package on Windows

[revodavid]

Got this error using publishWebService:

Error in publishWebService(ws, fun = sleepyPredict, name = "sleepy lm",  : 
  Requires external zip utility. Please install zip, ensure it's on your path and try again.

Is there any way to relax this dependency on a third-party app and use Windows' built-in Zip capabilities instead?

Otherwise, noting this dependency in the docs (and how to resolve it) would be helpful.

[QuantDevHacks]

This was recently under discussion and is a valid point. Will update when more information is available and post in this issue.

[revodavid]

Installing RTools is sufficient:
https://cran.r-project.org/bin/windows/Rtools/

[andrie]

@revodavid This is documented in the help for ?publishWebService

Ideally we can find a way to bundle the zip in RTools with the package.