ruff-quickfix

This is a simple wrapper for the Python linter ruff that allows it to be easily used with (neo)vim's quickfix.

Why? I like Vim's quickfix and find it more useful in some situations over using an LSP. Also this is an excuse to learn publishing.

Install

pipx (recommended)

Note: Normal pip works as well, though you should give pipx a try!

• PyPi: pipx install ruff-quickfix
• GitHub: pipx install git+https://github.com/Nealium/ruff-quickfix
• If you don't already have ruff you include it as an "extra"
  • pipx install ruff-quickfix[ruff]
  • if zsh: pipx install ruff-quickfix\[ruff\]

Source

Clone project: git clone https://github.com/Nealium/ruff-quickfix.git

• Pipx: pipx install .
• Pip: pip install .
• Poetry: poetry install
• From Wheel:
  • poetry install
  • poetry build
  • pipx install dist/*.whl

Home Manager (nix)

Note! This will crash on the first run as the sha256 isn't real. Once it crashes the error message will provide the actual sha256 that is required.

1. Insert items into home.nix
2. Replace rev with the most recent commit's hash
3. Run
4. Replace placeholder sha256 with actual hash from error message
5. Re-run
6. Validate: ruff-quickfix --help

{ config, pkgs, ... }:
let
  # other stuff..

  ruff-quickfix = import
    (pkgs.fetchFromGitHub
      {
        owner = "Nealium";
        repo = "ruff-quickfix";

        # "commit hash" (can be found on GitHub)
        rev = "{commit-hash}";

        # placeholder hash (replace after 1st run)
        sha256 = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
      }
    ) { inherit pkgs; };
in
  home.packages = [
    # other packages..

    ruff-quickfix
  ]

Config

Neovim

• Location: ~/.config/nvim/after/ftplugin/python.lua

vim.opt.makeprg = [[ruff-quickfix %]]
vim.opt.errorformat = [[%f:%l:%c:%t:%m]]

Vim

• Linux: ~/.vim/ftplugin/python.lua
• Windows: ~/.vimfiles/ftplugin/python.lua

setlocal makeprg=ruff-quickfix\ %
setlocal errorformat=%f:%l:%c:%t:%m

Usage

The command can be manually called from any Python file by calling the ex command :make, which will lint your current buffer. I would recommend the plugin vim-qf for some quickfix niceties.

Advanced Usage

The main benefit of using the quickfix with a linter is that you can do more wider scope lints, example: the entire project, and have all errors in a single quickfix! This requires making custom user commands

Neovim

-- Current directory of focused buffer `:Druff`
vim.api.nvim_create_user_command("Druff", function()
    local _errorformat = vim.opt.errorformat
    vim.opt.errorformat = [[%f:%l:%c:%t:%m]]
    vim.g._cexpr = vim.fn.system({ "ruff-quickfix", vim.fn.expand("%:p:h") })
    vim.cmd([[:cexpr g:_cexpr]])
    vim.opt.errorformat = _errorformat
end, {})

-- Current working directory, "project wide" `:Pruff`
vim.api.nvim_create_user_command("Pruff", function()
    local _errorformat = vim.opt.errorformat
    vim.opt.errorformat = [[%f:%l:%c:%t:%m]]
    vim.g._cexpr = vim.fn.system({ "ruff-quickfix", vim.fn.getcwd() })
    vim.cmd([[:cexpr g:_cexpr]])
    vim.opt.errorformat = _errorformat
end, {})

Vim

" Current Directory of focused buffer `:Druff`
function! s:DirRuffMake()
    let l:_errorformat = &errorformat
    set errorformat=%f:%l:%c:%t:%m
    cexpr system( "ruff-quickfix " .. expand("%:p:h") )
    let &errorformat = l:_errorformat 
endfunction
command Druff call s:DirRuffMake()

-- Current working directory, "project wide" `:Pruff`
function! s:ProjectRuffMake()
    let l:_errorformat = &errorformat
    set errorformat=%A%f:%l:%c:%t:\ %m,%A%f:%l:\ %m,%A%f:(%l):\ %m,%-Z%p^%.%#,%-G%.%#
    cexpr system( "pylint --output-format=text --msg-template='{path}:{line}:{column}:{C}: [{symbol}] {msg}' --reports=no " .. expand("%:p:h") )
    let &errorformat = l:_errorformat 
endfunction
command Pruff call s:ProjectRuffMake()

Extras

Inside the extras directory you will find files that allow you to easily toggle between pylint and ruff. It also contains a standalone file of ruff-quickfix that doesn't require on click