Fails to find Developer Tools on Sierra

[lox]

I'm trying to use xcode-install to initially install Developer Tools and then later XCode. I get the following error on a clean install on Sierra:

/usr/local/bin/xcversion install-cli-tools
/Library/Ruby/Gems/2.0.0/gems/fastimage-2.1.0/lib/fastimage.rb:67: warning: already initialized constant URI::DEFAULT_PARSER
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/uri/common.rb:545: warning: previous definition of DEFAULT_PARSER was here
No new software available.

Any ideas?

[olyv]

Hi @lox, did manage to find the root cause?