fix: change suggestion if xcode-select --install fails #156
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Fixes #154
There's (at least) two cases with
xcode-select -p
can return/Library/Developer/CommandLineTools
In the first case (already covered) the tools needs to be installed so running
xcode-select --install
is correct.However this will fail if the tools were already installed. In this case this leads to repetitive asking to fix, checking and failing, asking to fix...
The solution is to ask the user to setup (download/install) the correct Xcode version.