patch-seq.nvim

Neovim support for the Seq programming language.

Features

• Syntax highlighting - Keywords, builtins, strings, comments, stack effects
• Auto-indentation - Smart indentation for word definitions and control flow
• LSP integration - Real-time diagnostics (parse errors, type errors, undefined words)
• Completions - Builtins, local words, included modules
• Hover - Stack effect signatures for words
• Breadcrumbs - Document symbols showing word definitions in your statusline
• Inlay hints - Inline type signatures (opt-in, off by default)

Requirements

• Neovim 0.10+ (for vim.lsp.start and vim.filetype.add)
• seq-lsp binary in your PATH

Installing seq-lsp

Install from crates.io:

cargo install seq-lsp

Or build from source:

git clone https://github.com/navicore/patch-seq
cd patch-seq
cargo install --path lsp

Installation

Using lazy.nvim

{
  "navicore/patch-seq.nvim",
  ft = "seq",
  opts = {},
}

With custom configuration

{
  "navicore/patch-seq.nvim",
  ft = "seq",
  opts = {
    -- Enable inlay hints (off by default)
    inlay_hints = true,

    -- Custom path to seq-lsp binary (optional)
    cmd = { "/path/to/seq-lsp" },

    -- LSP capabilities (optional, for completion plugins)
    capabilities = require("cmp_nvim_lsp").default_capabilities(),

    -- on_attach callback (optional)
    on_attach = function(client, bufnr)
      -- Your keymaps here
    end,
  },
}

Manual setup

If you prefer manual configuration:

require("seq-lsp").setup({})

Usage

Once installed, open any .seq file and the LSP will start automatically. Diagnostics appear inline as you type.

License

MIT