Security updates and upstream support for Python 2 are due to be withdrawn, and this will prevent running Sugar on Linux.
Issues have not been created, as it is a waste of time to do so. As of 2020-02-25 there are 175+ matches for the code pattern "exec = sugar-activity " in org:sugarlabs. Not all of these need to be changed.
Also, as of 20120-02-25, there are 17 matches for an incomplete port, where the 2to3 tool has made a change to use a variable name [xxx_todo_changeme](https://github.com/search?q=org%3Asugarlabs+%22xxx_todo_changeme%22&type=Code) but the coder and reviewer failed to notice the change and pick a better name.
Repositories may not exist. Activity bundles may be found on activities.sugarlabs.org with no corresponding GitHub repository.
Activities may have been made obsolete by another activity. Care must be taken to assess if an activity is suitable for porting.
Pull requests may already exist but stalled by other problems.
Sugar Labs