Roadmap for 2.0.0

[kddnewton]

Opening this issue just for public visibility into the stuff I'm pushing on/expecting to happen before 2.0.0, which should hopefully be in the near-ish future. Now that all of the various bugs that I know about related to the actual structure of the tree have been fixed (https://bugs.ruby-lang.org/projects/ruby-master/issues?query_id=380), I'm looking to get the following stuff over the line before the next major.

Stuff on this repository in particular:

• The three PRs related to Rust stuff (strictly adding more functionality)
• Optimizations #4006 — Some optimizations.
• Better scope prism's C API #2888 — this largely involves moving a bunch of headers around. I have a PR in progress for this on ruby/ruby that will be reverse synced.
• Identify unexpected nodes in error recovery scenarios #3828 — there is an open PR for this that I need to review, and potentially modify.
• Modifying AST and generating source code #3466 — maybe a rewriter like Parser? I would like to have a formatter fallback like recast.
• Support pre-compiled gems in our rubygems publishing workflow #4026 — Precompilation of the gem for common platforms (either rake-compiler-doc or cibuildgem).
• Revisit comments #4044 — Revisit how comments are attached

Other stuff in the ecosystem I would like stabilized:

• Switch mk_builtin_loader.rb to use prism to parse ruby#10005 — using Prism for builtins in CRuby
• Split gem into Ruby and extension parts #3959 — JRuby stuff
• Switch parser over to Prism ruby-syntax-tree/syntax_tree#543 — using Prism in Syntax Tree

Other gems that could use migrating that would be nice but not required (ordered by downloads):

• rspec-* - Use Prism for parsing rspec/rspec#303
• byebug - Use cross-runtime check for valid syntax deivid-rodriguez/byebug#947
• temple - Allow using prism as the parser engine judofyr/temple#156
• yard - Allow using Prism for parsing lsegal/yard#1662
• state_machines - Use a cross-runtime syntax check without Ripper state-machines/state_machines#164
• power_assert - Add the ability to use the Prism parser power_assert#66
• test-prof - Use Prism for parsing if available test-prof/test-prof#338
• rbs - Prototype with the Prism parser rbs#2882