'Failed to build gem native extension' on Windows 7 (The system cannot find the path specified)

Question

The problem in short

I\'m on Windows and am getting the following error when running gem install json —platform=ruby:

The system canno         


        

Answer 1

So this isn't the best answer in the world, but I seem to have stumbled on a solution. If I set the verbose flag, everything works fine:

gem install json --platform=ruby --verbose

There's a log here: http://gist.github.com/dannysmith/8055495

That makes no sense - it'd be great if someone could explain why this seems to have fixed the error. Perhaps this is a bug in devkit?