return {
  'stevearc/conform.nvim',
  event = { 'BufReadPost', 'BufNewFile' },
  opts = {
    formatters = {
      juliaformatter = {
        command = 'julia',
        args = {
          '--project=' .. vim.fn.expand('~/.julia/environments/nvim-format'),
          '--startup-file=no',
          '--history-file=no',
          '-e',
          'using JuliaFormatter; print(format_text(read(stdin, String)))',
        },
        stdin = true,
      },
    },
    formatters_by_ft = {
      python = { 'ruff_fix', 'ruff_format', 'ruff_organize_imports' },
      yaml = { 'yamlfmt' },
      sh = { 'shfmt' },
      sql = { 'sqlfluff' },
      lua = { 'stylua' },
      json = { 'jq' },
      julia = { 'juliaformatter' },
      markdown = { 'prettierd' },
    },
    format_on_save = function(bufnr)
      -- julia formatter is slow, skip on save
      if vim.bo[bufnr].filetype == 'julia' then
        return
      end
      return { timeout_ms = 2000, lsp_fallback = true }
    end,
    notify_on_error = true,
  },
  config = function(_, opts)
    require('conform').setup(opts)
  end,
}