Fail gracefully on naive path if jbang not present #66
Description
@Sanne says: FYI, if you don't have jbang on the path it's not failing gracefully..
@edeandrea suggests : we could always run jbang from source via curl -Ls https://sh.jbang.dev | bash -s -Eric Deandrea: that way we don't require it to be installed
@Sanne: I'd be a little nervous about security - which is why I don't have jbang on my path :) Would it be possible to check if it's on path, and just bail out with a good error?