Epic: Positron Server on Posit Workbench

[jmcphers]

This epic aggregates issues that need to be resolved for Positron to work correctly in the context of Posit Workbench.

Critical

Runtimes in Workbench

These issues must be addressed in order for R and Python to run successfully in the Workbench environment. Broadly, the main work to do is to make sure the runtimes and their dependencies are compatible with the broad spectrum of Linux distributions supported by Workbench, and to wrap the runtimes in a supervisor so that they can be disconnected/reconnected from the browser safely.

• Add Positron Runtime Service to store session-scoped Language Runtime state #1155
• Reloading with busy runtime looks frozen, breaks LSP #1243
• Statically link libsodium on linux #1411
• R: Add support for R kernel (ark) on Linux #1619
• Build ark for supported x86_64 linux platforms #4506
• Build ark for supported arm64 linux platforms #4507
• Server: A reload seems to be required to get the interpreters to load #2057

Workbench Integration

These issues must be addressed in order for Positron itself to be hosted in the Workbench environment. They concern the machinery needed for Workbench to bundle Positron, start Positron sessions, and connect to them.

• Restore support for serving at non-root paths #961]
• Support SSL for Positron in server mode #1424
• Provide CI builds of Positron Server for Linux #1618
• positron CLI returns VS Code version #1373
• Use Posit's vscode-server as Positron upstream (1.93.0 merge) #4273
• URL reshaping and proxying for Positron localhost URLs on Posit Workbench #4274
• Rename browser state IndexedDB database names #4864
• Integrate Python web apps with Workbench #4769
  • App Frameworks on Workbench: Fastapi root path issues #5027
  • App Frameworks on Workbench: Streamlit websocket issue when SSL enabled #5026
  • App Frameworks on Workbench: Dash app involves extra step to delete .env file #5028

Non-Critical

Status Reporting

RStudio sessions report various metrics back to Workbench, which allows Workbench to implement features like showing busy/idle status on the user dashboard and code auditing. These features could be implemented for Positron, too.

• Query-based API for determining if Positron is active/computing #3148
• Add API for subscribing to code execution events #2238

Admin Environment Control

These features could help admins control the environments available to users.

• Provide inclusion/exclusion of language runtimes #3574
• Disable discovery or console for specific languages #3575

UI/Front End

• Data Explorer tabs not restored on reload/resume tab #3172
• Epic: Positron Web stability #4893

Other

• Update .rs.api.versionInfo to describe the mode where Positron is running an R session #4081
• Provide a language agnostic way to determine mode in which a Positron session is running #4082
• Missing vsda module on Linux #1402
• Support for page load detection, title display, navigation commands, etc. in the Viewer on Posit Workbench #4276
• Positron Web: Interactive plot thumbnails are not drawn in the browser #4278

[juliasilge]

We got a ton done here this milestone! 🎉

There are some remaining issues related to this work that are now in other milestones