Tracking Issue for Zed REPL

[rgbkrk]

Building on #12062, #9778, #5273 and other issues labeled https://github.com/zed-industries/zed/labels/jupyter, this is a tracking issue for inline code running in Zed.

Media

• Blog post announcement (@rgbkrk)
  • "Hitting preview this week!", basic workflows, background
• Prep videos and GIFs

Settings

• Flip jupyter.enabled to default to true, allow people to turn it off

Architecture Polish

• Delete outputs from editor when surrounding lines deleted (Done in Invalidate anchors when they get deleted #14116)
• Switch from a global Panel to a View for managing the runtimes
  • Rip out the panel, switch to tabbed content for kernel logs and debug info (available kernels) @maxdeviant
• Support # %% format for code cells/blocks (see https://jupytext.readthedocs.io/en/latest/formats-scripts.html)

Keybindings

• On all platforms, switch to the following keybindings:

• ctrl-shift-enter - runs the current block (cell/line/selection) and moves down to next block
• ctrl-alt(option)-enter - runs the current block

Kernel Support

• Ark R kernel issue related to kernel_info_request on start: [ark] kernel_info_request not getting kernel_info_reply posit-dev/positron#3864
• Jupyter kernel blocking on shell reply Simple jupyter kernel doesn't work correctly #14146
• Check the running kernel's process.status() repl: Check process status and propagate to output #14782

Output Polish

• Table output using application/vnd.dataresource+json needs to be able to show larger tables (Done in Measure maximum width of each cell to render table #14026)
• Show spinner when executing and queued
• Use the Muted styling for the Executing... and Queued text (Done in Switch to muted color for kernel output labels #14529)
• Show a close button to clear out an output, on the right hand side of the output.
• Newline issue at the end of the buffer
  • If there's already a newline at the end of the buffer, avoid inserting a new one

Kernel Discovery

• Improve the kernel discovery process to handle various installation methods (system, virtualenv, poetry, etc.).
• Create a way to refresh the available kernels on demand
• Detect conda environments and active python environments

Documentation:

• Update documentation to explain how users can configure kernels for their projects.
• Provide examples of .zed/settings.json configurations for kernel selection.

Stretch goals

If we can make it in time,

• Emit text/plain media type within assistant panel when repl used there, to allow model to iterate with you
• Improve the kernel discovery process to handle various installation methods (system, virtualenv, poetry, conda, etc.). Partially done in repl: Detect Conda and Python environments with their own kernel specs #15047
• Clicking on the last line before a block decoration makes the cursor disappear

[rgbkrk]

Shipped!