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Vim/vim-lsp Integration

prabirshrestha/vim-lsp is an LSP integration for Vim 8 and Neovim. It does not provide MCP tools.

Primary Config Path

Register a Rust server with lsp#register_server:

if executable('lspmux')
  au User lsp_setup call lsp#register_server({
      \ 'name': 'rust-analyzer-lspmux',
      \ 'cmd': {server_info->['lspmux', 'client', '--server-path', 'rust-analyzer']},
      \ 'allowlist': ['rust'],
      \ })
endif

The cmd launches lspmux client and passes rust-analyzer as the language server path for the shared daemon to spawn.

Transport

For TCP loopback:

export LSPMUX_CONNECT=tcp://127.0.0.1:27631

For Unix sockets, leave LSPMUX_CONNECT unset and let lspmux client read the configured connect value.

Verification

Open a Rust file and run:

:LspStatus

The registered rust-analyzer-lspmux server should be running for the buffer.