dmypy-ls: mypy language server

It is a PoC language server using dmypy internal API, not intended to be daily used.

It supports diagnostics only.

The first run is very slow as dmypy has to build a cache, and dmypy rebuilds the cache for no obvious reason when multiple files are opened.

These days mypy cli is still faster because of the efficient disk cache it has now.

Install

$ pipx install dmypy-ls

vim-lspconfig

lua << EOF
require("lspconfig.configs")["dmypyls"] = {
    default_config = {
        cmd = { 'dmypy-ls' },
        filetypes = { 'python' },
        root_dir = lspconfig.util.root_pattern('pyproject.toml', 'setup.py', 'setup.cfg', 'requirements.txt', 'Pipfile'),
        single_file_support = true,
    },
}
require("lspconfip").dmypyls.setup({})
EOF