Traap's Blazing Fast Neovim configuration.

Credits

• Folke Lamaitre
• LazyVim

Linux Bash Installation

resetNeovim does the following:

1. Uses bnvim to clone or pull Neovim sources and build them.
2. Uses "switchNeovim traap" to switch to my Neovim configuration.

Notes

1. Backups are not done.
2. You have been warned.

Extra credit

Try nvims to safely experiment with multiple Neovim configurations.

Overview

nvim.traap is my production Neovim configuration. It is powered by lazy.nvim, uses Neovim's native LSP client, and borrows selected conventions from LazyVim without loading the LazyVim distribution or its default plugin set.

The configuration favors deliberate lazy loading and a small startup surface. It provides a complete coding environment when launched in Neovim and a reduced integration layer when embedded in VS Code.

Requirements

• A recent Neovim release with the native vim.lsp.config() and vim.lsp.enable() APIs.
• Git, which bootstraps lazy.nvim and installs plugins.
• A Nerd Font for icons used throughout the interface.
• ripgrep for Snacks grep and todo searches.
• Node.js and Yarn to build markdown-preview.nvim.
• mise with Ruby 4.0.0 and Solargraph for Ruby LSP support.
• nixd on PATH for Nix LSP support.

Language servers managed by Mason may have additional runtime requirements. Use :checkhealth, :checkhealth vim.lsp, and :Mason when diagnosing a missing tool.

Startup and package management

init.lua owns the startup sequence:

1. Set the global and local leader to <Space>.
2. Bootstrap lazy.nvim into Neovim's data directory when it is absent.
3. Load the curated plugin specifications from lua/traap/plugins.
4. Apply options, autocommands, keymaps, clipboard integration, and platform detection.
5. Apply TokyoNight when running in standalone Neovim.

Plugins are intentionally unversioned so updates follow their current upstream branches. The automatic update checker and configuration-change notifications are disabled. lazy-lock.json records the working revisions.

Useful package commands:

Command	Purpose
:Lazy	Open the plugin manager.
:Lazy sync	Install missing plugins, update plugins, and remove unused plugins.
:Lazy update	Update installed plugins and the lockfile.
:Lazy clean	Remove plugins no longer present in the specification.
:Lazy profile	Inspect startup and plugin load times.
:Mason	Inspect language-server installations.

Configuration layout

Path	Responsibility
init.lua	Entrypoint and startup ordering.
lua/traap/config/bootstrap.lua	Installs and adds lazy.nvim to the runtime path.
lua/traap/config/lazy.lua	Package-manager policy and UI.
lua/traap/config/options.lua	Global editor defaults.
lua/traap/config/autocmds.lua	Filetype and buffer lifecycle behavior.
lua/traap/config/keymaps.lua	Core, plugin, LSP, and platform mappings.
lua/traap/plugins/	Curated plugin specifications and customizations.
lua/traap/lsp/servers.lua	Filetype-to-server registry and server overrides.
lua/traap/lsp/config.lua	LSP capabilities, installation, setup, and formatting.
lua/traap/lsp/init.lua	Native LSP compatibility commands.
lua/traap/core/	Clipboard, notifications, platform detection, wiki helpers, and utilities.

Editor behavior

The principal defaults are two-space indentation, an 80-column text width, relative line numbers, persistent sign columns, rounded floating windows, right/below splits, no swapfile, and no line wrapping. The system clipboard is used locally; remote SSH sessions retain Neovim's internal clipboard.

Autocommands add several workflow conveniences:

• Create missing parent directories immediately before saving.
• Restore the last cursor location when reopening ordinary files.
• Close help, quickfix, Fugitive, health, and similar utility windows with q.
• Apply prose- and comment-friendly format options to supported source files.
• Mark csv, sh, and tex buffers with vim.b.autoformat = false.
• Reapply custom purple borders and UI highlights after colorscheme changes.

Significant plugin customizations

Snacks.nvim

Snacks is the main interface layer. Its dashboard identifies this configuration as powered by lazy.nvim; explorer, file and grep pickers, Git browsing, notifications, buffer deletion, status column, word references, toggles, image support, and Zen mode are enabled. Animation, indentation guides, scrolling, terminal, and Lazygit integrations are deliberately disabled.

The explorer and picker cooperate with tmux: <C-h>, <C-j>, <C-k>, and <C-l> leave the picker and move in the requested direction when there is no adjacent Neovim window.

Frequently used mappings include:

Mapping	Action
<leader>e	Open the explorer.
<leader>ff / <leader>fg	Find files / Git files.
<leader>fb / <leader>fr	Find buffers / recent files.
<leader>sg / <leader>sw	Grep text / grep the word or selection.
<leader>sd / <leader>sD	Show workspace / buffer diagnostics.
<leader>gb / <leader>gl	Browse Git branches / log.
<leader>gB	Open the current location with Git browse.

Completion and Lua development

blink.cmp combines buffer, LSP, path, and snippet sources. It enables command line completion, friendly snippets, ghost text, signature help, automatic documentation after 500 ms, and Rust-backed fuzzy matching when available. Completion capabilities are injected into every configured LSP server.

lazydev.nvim supplies Neovim Lua runtime metadata so completion and diagnostics understand vim, plugin APIs, and the active runtime path.

Treesitter

Treesitter loads for real file buffers. Bash and regular-expression parsers are always ensured; other parsers are installed on the first corresponding FileType event. Parser setup is skipped for transient interfaces such as completion menus, help, quickfix, Lazy, Mason, Noice, notifications, LSP info, and Snacks picker buffers.

Harpoon

Harpoon 2 saves changes to its list automatically while leaving branch-specific marks and automatic UI-close synchronization disabled. Slots one through eight are selected with ;1 through ;8. Harpoon is not enabled inside VS Code.

Markdown and wiki editing

markdown-preview.nvim loads for markdown and wiki buffers and builds its web application with yarn install. Wiki and journal commands are provided by wiki.vim plus the local vim-bundle-wiki.vim customizations. Bullets and checkboxes are active for Markdown, wiki, text, scratch, and Git commit buffers; ;x toggles a checkbox.

img-clip.nvim stores pasted images beneath images/<document-name>/, prompts for the filename, URL-encodes paths, and inserts filetype-specific markup for Markdown, wiki, AsciiDoc, HTML, Org, reStructuredText, TeX, and Typst. It is disabled on Windows.

todo-comments.nvim

In addition to the standard keywords, todo-comments recognizes:

• YouTube, Youtube, and youtube with a red YouTube icon.
• URL, Url, and url with a purple link icon.

Keyword sets are merged with the defaults and matches are highlighted even when they appear outside comments.

Git and search

Fugitive loads on :G; Gitsigns supplies buffer signs and hunk operations, and Snacks supplies repository pickers and browser integration. grug-far.nvim provides project-wide search and replacement. Better Quickfix adds a preview window whose borders follow the configuration's purple highlight palette.

UI

TokyoNight uses its transparent night style with italic comments and keywords, transparent sidebars and floats, a hidden inactive statusline, bold Lualine, and purple borders. Noice renders the command line in a popup, sends ordinary messages through notifications, exposes long messages in a split, and filters routine editor noise. Lualine includes Git state, diagnostics, macro recording, Noice command/search status, file metadata, and cursor position. Which-key uses its modern preset with spelling suggestions.

LSP configuration and installation

The LSP stack is composed of three plugins:

• nvim-lspconfig supplies server definitions compatible with Neovim's native LSP configuration API.
• mason.nvim installs language-server executables in Neovim's data directory.
• mason-lspconfig.nvim translates LSP server names into Mason packages.

Servers are installed and configured by filetype rather than eagerly at startup. On the first matching FileType event, the configuration:

1. Looks up the server in lua/traap/lsp/servers.lua.
2. Skips setup when that server was already handled during the session.
3. Asks Mason to ensure the package is installed unless mason = false.
4. Merges Blink completion capabilities and the format-on-save attachment hook with the server-specific options.
5. Configures and enables the server through vim.lsp.config() and vim.lsp.enable(); a legacy lspconfig.setup() fallback remains available.

The first visit to a filetype may initiate a Mason installation. Open another buffer of that type or run :LspStart after installation finishes if the executable was not available when Neovim first attempted to start it.

The registry currently supports:

Languages	Servers
Bash, C/C++, C#, CSS	bashls, clangd, csharp_ls, cssls
Go, HTML, Java, JSON	gopls, html, jdtls, jsonls
Julia, LaTeX prose, Lua, Markdown	julials, ltex, lua_ls, marksman
Nix, Python, QML, Ruby	nixd, pyright, qmlls, solargraph
Rust, SQL, Svelte, TeX	rust_analyzer, sqls, svelte, texlab
TOML, JavaScript/TypeScript, Vim, XML, YAML, Zig	taplo, ts_ls, vimls, lemminx, yamlls, zls

Solargraph is explicitly excluded from Mason management and is deliberately launched with:

mise exec ruby@4.0.0 -- solargraph stdio

nixd is expected to exist on PATH. If it is unavailable through the active Mason registry, its server entry should also use mason = false. The Lua server knows the complete Neovim runtime library and accepts vim and Snacks as globals. Clangd enables background indexing and clang-tidy, requests detailed completion, and suppresses automatic header insertion.

When a client supports textDocument/formatting, a buffer-local BufWritePre hook formats synchronously. The current LSP hook does not consult the vim.b.autoformat flag used elsewhere in the configuration.

Native LSP mappings are installed when a client attaches:

Mapping	Action
gd / gD	Definition / declaration.
gi / gr	Implementation / references.
K / <leader>k	Hover / signature help.
<leader>rn	Rename symbol.
<leader>ca	Code action.
<leader>E	Open diagnostic float.
[d / ]d	Previous / next diagnostic.
<leader>q	Populate the location list with diagnostics.

LSP maintenance commands:

Command	Purpose
:LspInfo	Run :checkhealth vim.lsp.
:LspLog	Open the Neovim LSP log in a tab.
:LspStart [server...]	Enable named servers, or the server for the current filetype.
:LspRestart[!] [server...]	Restart named or active servers; ! force-stops clients.
:LspStop[!] [server...]	Disable named or active servers; ! force-stops clients.

To add or change a language server, edit lua/traap/lsp/servers.lua. Each registry entry requires a native LSP server name and one or more filetypes. Add opts for server-specific settings or a custom command. Set mason = false when the executable is installed outside Mason.

example= {
name="example_ls",
filetypes= { "example" },
opts= {
settings= { example= { enabled=true } },
},
}

Platform behavior

Standalone Neovim receives the complete UI, completion, LSP, Treesitter, Git, Harpoon, and content-authoring stack. VS Code receives a reduced plugin list and routes selected editor actions to VS Code commands. Platform helpers also adapt clipboard behavior for SSH and Windows and allow picker navigation to cross Neovim/tmux boundaries.

Validation and maintenance

After changing the configuration, useful checks are:

nvim --headless "+Lazy! sync""+qa"
nvim --headless "+checkhealth""+qa"
stylua --check init.lua lua

Within Neovim, use :Lazy profile to inspect startup behavior, :Mason to inspect installed language servers, and :LspInfo from a source buffer to confirm that its client attached.