A .powrc file which works with RVM's .rvmrc or .ruby-version (+ .ruby-gemset) configuration files.

gistfile1.sh

if [ -f "$rvm_path/scripts/rvm" ]; then
  source "$rvm_path/scripts/rvm"

  if [ -f ".rvmrc" ]; then
    source ".rvmrc"
  fi

  if [ -f ".ruby-version" ]; then
    rvm use `cat .ruby-version`
  fi

  if [ -f ".ruby-gemset" ]; then
    rvm gemset use --create `cat .ruby-gemset`
  fi
fi

Create a .powrc file in your application directory and paste the above contents into it.

Thanks for this elaboration of the original post. Much appreciated.

try this version https://gist.github.com/mpapis/5364653 - should work more reliable

@mpapis You completely removed the .ruby-version and .ruby-gemset support. Was that intentional? That relies on rvm's current. I'm missing how it's changing to the appropriate version using rvm, based on the most compatible way to set these (using .ruby-version and .ruby-gemset).

I tried this, but the variable $rvm_path is empty inside .powrc. The variable does contain the right info when I execute it on my normal shell. Any ideas on what could be wrong?

Faster: don't do "rvm use" twice: https://gist.github.com/flarik/5764244

I believe this has an error in it. The line:

rvm gemset use --create cat .ruby-gemset

should be:

rvm gemset use cat .ruby-gemset --create