Developer notes .vscodeignore is used to ignore files when packaging the extension. Handy links https://code.visualstudio.com/api/working-with-extensions/publishing-extension https://dev.azure.com/caenrigen/_usersSettings/tokens https://marketplace.visualstudio.com/manage/publishers/caenrigen https://marketplace.visualstudio.com/manage/publishers/caenrigen/extensions/jupytext-sync/hub