Calls to \makeindex and \printindexfrom the package index do not result in the execution of makeindex and the rerunning of TeX.

This results in:

• indices not being build or included
• .idx files being created in the document directory even when --keep-intermediates is not specified.

Tectonic should support packages providing index functionality (such as index) which require makeindex to be called and TeX to be rerun to incorporate the generated files.

Current workaround is to run tectonic, makeindex as needed, and then run tectonic again, then delete intermediates.