Perl syntax checking has been added to RSTALanguageSupport. You can configure it with the location of a Perl install on your system (by default it scans your PATH for a Perl binary), and then PerlLanguageSupport will automatically begin scanning your code for errors as you type:
Next will be the ability to muck with the @INC path to add other libraries. Currently it only uses the default @INC of your Perl install.

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