feat: flavor

[sxyazi]

Docs here https://yazi-rs.github.io/docs/flavors/overview

[ningw42]

The name 'flavor' is kind confusing to me. If we are going to make a 'flavor', would it be better if keymapping is also a part of a flavor? This isn't a feature request :P, just my random thoughts.

Maybe something off the topic, I encountered an unexpected error due to the new flavor feature. I am on NixOS and yazi is configured via home-manager. To match yazi's active development, I use xdg.configFile instead of the options provided by home-manager. I missed xdg.configFile..recursive which made $XDG_CONFIG_DIRS/yazi a read-only directory, which led to yazi's crash on boot due to the failure of flavor directory creation. I corrected my mistake, so yazi works as expected now. I switched to yazi right on the introduction of the plugins directory, I didn't encountered any similar issue (crash when missing the plugins directory) if I recall correctly. If anyone happens to have a read-only $XDG_CONFIG_DIRS/yazi, this might be confusing to him/her.

❯ RUST_BACKTRACE=full yazi
Backtrace (most recent call first):
  File "<unknown>", line 0, in better_panic::print_backtrace_info
  File "<unknown>", line 0, in better_panic::Settings::create_panic_handler::{{closure}}
  File "<unknown>", line 0, in yazi_shared::term::term::Term::goodbye
  File "<unknown>", line 0, in yazi::panic::Panic::install::{{closure}}

The application panicked (crashed).
  Failed to create flavor directory: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
in yazi-boot/src/boot.rs, line 108
thread: main

[sxyazi]

Hi, flavor is a pre-made theme used to define a color scheme, not including key bindings, see https://yazi-rs.github.io/docs/flavors/overview for more details.

This issue arises from the fact that in newer versions of Yazi, it defaults to creating two directories, ~/.config/yazi/plugins and ~/.config/yazi/flavors, to allow users to conveniently install plugins and flavors with just one line of git clone, without needing to mkdir first and then git clone.

Unfortunately, this affects users with a read-only file system, and there is a fix for this, NixOS/nixpkgs#295846, but I'm not familiar with Nix, I cannot review it. Perhaps later I can create an issue to see if there are any Nix-savvy Yazi users who can help review it to prevent more people from encountering this issue.