Roadmap and overview of issues

[RazinShaikh]

This list was made for the QPL2024 hackathon, but can serve as a good guide to the current issues.

The list is split into difficulties and roughly ordered by priority within each difficulty.

Good first issue

• Use Ctrl+arrow to move selected nodes like tikzit #267
• Ability to merge nodes in edit mode in the same place similar to tikzit #253
• Mypy compliance; then enable it in github workflow #298
• Bialgebra on parallel edges puts vertices on top of each other #306
• Dragging a 0/pi state onto a different coloured spider results in a rewrite labelled "bialgebra". Fix it to "copy 0/pi spider" #313
• The show matrix button is unintuitively hidden in the view menu #286
• 'Apply' option in preferences? #325
• Add boolean settings form input #321
• Improve the style of tabs #323
• Set precision of matrix and copy it to clipboard #316

Easy

• "fuse spiders" rule should fuse all fusable spiders in the selection #132
• Command to snap spiders on to the wire #311
• Group the various tikz setting tabs as sub-tabs under one tab #295
• Add documentation for Tikz exports #250
• Improve the style of the editor for proof step renaming #291
• Magic wand unfuse node from identity does not work #319
• Dark mode? #322
• Better ZH rewrites #162
• Add more ZXW rewrite rules pyzx#131

Medium

• Edge should be selectable only by clicking directly on the edge, not simply by clicking in the interior region #302
• Check for updates and optionally auto-update #284
• Implement bialgebra in the other direction #20
• Input common patterns as ZX diagrams via text input #296 (it has various subtasks, so can be worked on together by multiple people)
• Widgets/patterns sidebar to insert common diagrams in edit mode #318
• Add animation for hopf rule #303
• add more tests #192
• Highlight difference in rewrite steps #190
• Tikz proof export feature: export steps of the proof as a series of tikz files #203

Hard

• Bug saving/loading proofs #207
• Saving/loading does not work properly when graph has parallel edges or self loops #308
• Basic rewrites don't work with the new PyZX version  #256
• "Show matrix" shows a wrong matrix when the graph has parallel edges or self-loops #307
• Edge curve is not preserved by saving, applying rewrites, etc. #270

To discuss

• Support for blank nodes to add text, maths, etc. #268
• Support beyond qubits: qudits, mixed dimensions, and infinite dimensions #285