bug: format command error in ruff v0.9.7

[A-caibird]

Neovim version (nvim -v)

nvim v0.10.4

Operating system/version

MacOS 15.1

Read debugging tips

• I have read through the debugging tips.

Add the debug logs

• I have set log_level = vim.log.levels.DEBUG and pasted the log contents below.

Log file

      2025-03-03 15:52:52[INFO] Run ruff on /Users/acaibird/Documents/python/Fastapi/main.py
      2025-03-03 15:52:52[DEBUG] Run command: { "/opt/homebrew/bin/ruff", "check", "--fix", "--force-exclude", "--exit-zero", "--no-cache", "--stdin-filename", "/Users/acaibird/Documents/python/Fastapi/main.py", "-" }
      2025-03-03 15:52:52[DEBUG] Run default CWD: /Users/acaibird/Documents/python/Fastapi
      2025-03-03 15:52:52[DEBUG] ruff exited with code 0

Describe the bug

can not use ruff to format python file, but black ok. I think it's the wrong command to call ruff to format, in ruff 0.9.7 it should be ruff format, but I didn't find it

What is the severity of this bug?

minor (annoyance)

Steps To Reproduce

1. using ruff v0.9.7
2. modify python file, and save it

Expected Behavior

get formated code,

Minimal example file

require("conform").setup({
  formatters_by_ft = {
    lua = { "stylua" },
    -- Conform will run multiple formatters sequentially
    python = { "ruff" },
    -- You can customize some of the format options for the filetype (:help conform.format)
    rust = { "rustfmt", lsp_format = "fallback" },
    -- Conform will run the first available formatter
    javascript = { "biome", "prettierd", "prettier", stop_after_first = true },
    css = { "biome", "prettier" },
    scss = { "biome", "prettier" },
    go = { "gofmt", "golines" },
    json = { "biome", "prettier" },
  },
  format_on_save = {
    -- These options will be passed to conform.format()
    timeout_ms = 500,
    lsp_format = "fallback",
  },
  log_level = vim.log.levels.DEBUG,
})

Minimal init.lua

-- DO NOT change the paths and don't remove the colorscheme
local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs({ "config", "data", "state", "cache" }) do
  vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({
    "git",
    "clone",
    "--filter=blob:none",
    "--single-branch",
    "https://github.com/folke/lazy.nvim.git",
    lazypath,
  })
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
  "folke/tokyonight.nvim",
  {
    "stevearc/conform.nvim",
    config = function()
      require("conform").setup({
        log_level = vim.log.levels.DEBUG,
        -- add your config here
      })
    end,
  },
  -- add any other plugins here
}
require("lazy").setup(plugins, {
  root = root .. "/plugins",
})

vim.cmd.colorscheme("tokyonight")
-- add anything else here

Additional context

No response

[stevearc]

There are two formatters for ruff: ruff_fix which runs ruff check --fix and ruff_format which runs ruff format. The bare ruff formatter is deprecated and aliases to ruff_fix.

[A-caibird]

@stevearc thanks, it's all sorted now!