[discuss] place runtime folder in ~/.local/helix or ~/.cache/helix instead of ~/.config/helix

[hh9527]

My ~/.config in under git control, I have to configure .gitignore to avoid upload/download tree-sitter sources and *.so.

I think the more reasonale approach is

• only keep config.toml languages.toml inside ~/.config/helix
• make all other files into ~/.local/helix

and one more step, for one who need to workspace-level customize (for example: tree-sitter grammar developer)

we can config addtional runtime path in $workspace/.helix/config

# merged into runtime file lookup path with high priority
additional-runtime-path = ["./workspace-level-runtime-folder"]

finally behaviour:

helix merge config.toml & languages.toml in the following order:

• workspace-level: $workspace/.helix/
• user-level: ~/.config/helix/
• system-level: /etc/helix/
• distribution-level (always readonly) : /usr/local/helix/

and lookup runtime files in the following order:

• workspace-level: following values of additional-runtime-path in merged config.toml
• user-level: ~/.local/helix/runtime/
• distribution-level: /usr/local/helix/runtime/

alternative: use .cache instead .local
reason: runtime somehow could be seen as a build-cache of languages.toml

[the-mikedavis]

Duplicate of #584