Running a formatter in a specific directory

[jotacosta-fb]

Hey folks,

I configured ufmt as a formatting source as follows:

local ufmt = {
  method = null_ls.methods.FORMATTING,
  filetypes = { 'python' },
  generator = null_ls.formatter {
    command = 'ufmt',
    args = {
      'format',
      '$FILENAME',
    },
    stdin = false,
    to_temp_file = true,
  },
}

Ufmt works, but has different results than when I run ufmt format in the directory of the buffer (the file I'm formatting). I think the issue is that null-ls is executing ufmt from some other directory and ufmt doesn't read the root-dir configurations.

Is there a way for null-ls to run ufmt on the same directory as the open buffer?

[jose-elias-alvarez]

By default, null-ls will resolve its root directory from a few patterns, the most common of which is a Git root. You can either modify root directory detection based on your project or set the cwd for the process dynamically (I haven't tested this, but it should get you on the right track):

local ufmt = {
    method = null_ls.methods.FORMATTING,
    filetypes = { "python" },
    generator = null_ls.formatter({
        command = "ufmt",
        args = {
            "format",
            "$FILENAME",
        },
        stdin = false,
        to_temp_file = true,
    }),
    cwd = function(params)
        return vim.fn.fnamemodify(params.bufname, ":p:h")
    end,
}