Ruff Formatting Overrides Black

[sebastian9]

Field	Description
Plugin	lsp.servers.pylsp.ruff
Nixpkgs	24.05
Home Manager	24.05

• I have read the FAQ and my bug is not listed there.

Description

Whenever I install ruff, either inside or outside the pylsp module, it will insist in formatting my files and overriding black.

• I should be able to use black as a formatter, it differs slightly from ruff and my team's CI is using black.
• I should be able to do this while leaving lsp-format enabled, as that option affects formatting configuration for other languages. If I remove this, the code is correctly formatted with black.

Minimal, Reproducible Example (MRE)

Conform info

Formatters for this buffer:
LSP: pylsp
black ready (python) /Users/<user>/.local/bin/black

_: {
  programs = {
    nixvim = {
      plugins = {
        lsp.enable = true;
        lsp-format.enable = true;
        conform-nvim.formattersByFt = {
        enable = true;
        formatOnSave = {
          lspFallback = true;
          timeoutMs = 500;
        };
        notifyOnError = true;
          python = [
            "black"
          ];
        };
        lint.lintersByFt.python = [
          "ruff"
        ];
        lsp.servers = {
          pylsp = {
            enable = true;
            settings.plugins = {
              black.enabled = true;
              ruff.enabled = true;
            };
          };
        };
      };
    };
  };
}

[MattSturgeon]

Could you use an ftplugin to disable lsp formatting only for python files?