Support Flake8 plugins and configuration

Can I use flake8 tool for linting? I looked in package.json, but did not find there the corresponding options.

if I change configurationSources to [‘flake’], then I do not see any changes and pyflakes continues to be used. I store flake8 settings in .flake8 file for all projects.

If this is important, I use lsp-mode in Emacs and LanguageClient-neovim in Neovim as clients.

[sivakov512]

I have a .flake8 file with this content

[flake8]
ignore = E501, E265, F811
max-line-length = 160

But I still get errors about the length of the line of more than 79 characters. A similar problem if the file is named flake8.cfg.

Why not use flake8 directly (as optional feature, for example)? I use some flake8-plugins, for example, flake8-isort and flake8-pdb and pyls do not work with them

[horseinthesky]

I found the answer

If the ignore option is not in the configuration and not in the arguments, only the error codes E123/E133, E226 and E241/E242 are ignored (see the warning and error codes).

https://flake8.pycqa.org/en/2.5.5/config.html#default

@GaetanLepage maxLineLength did the trick. Here is my full config for NVIM built-in LSP

lspconfig.pyls.setup {
  cmd = {"pyls"},
  filetypes = {"python"},
  settings = {
    pyls = {
      configurationSources = {"flake8"},
      plugins = {
        jedi_completion = {enabled = true},
        jedi_hover = {enabled = true},
        jedi_references = {enabled = true},
        jedi_signature_help = {enabled = true},
        jedi_symbols = {enabled = true, all_scopes = true},
        pycodestyle = {enabled = false},
        flake8 = {
          enabled = true,
          ignore = {},
          maxLineLength = 160
        },
        mypy = {enabled = false},
        isort = {enabled = false},
        yapf = {enabled = false},
        pylint = {enabled = false},
        pydocstyle = {enabled = false},
        mccabe = {enabled = false},
        preload = {enabled = false},
        rope_completion = {enabled = false}
      }
    }
  },
  on_attach = on_attach
}