MyNvimConfig

Personal Neovim configuration based on kickstart.nvim, customized for Unity game development (C# and shaders) and general-purpose editing. Uses Nerd Fonts, the gruvbox-material colorscheme, and coq_nvim for autocompletion.

The leader key is <Space>.

Directory Structure

~/.config/nvim/
  init.lua                          -- Main config: options, keymaps, plugin manager, core plugins
  after/
    lsp/
      roslyn.lua                    -- Roslyn LSP settings (completion, inlay hints, analysis scope)
  lua/
    custom/
      plugins/
        bufferline.lua              -- Tab bar display (akinsho/bufferline.nvim)
        coq.lua                     -- Completion engine (ms-jpq/coq_nvim), disables nvim-cmp
        dashboard.lua               -- Start screen (nvimdev/dashboard-nvim)
        diagflow.lua                -- Inline diagnostics (dgagn/diagflow.nvim)
        fidget.lua                  -- LSP progress notifications + Roslyn progress bridge
        neo-tree.lua                -- File browser sidebar (nvim-neo-tree/neo-tree.nvim)
        theme.lua                   -- Gruvbox Material colorscheme
        unity-csharp.lua            -- C# / Roslyn LSP / Mason custom registry
        unity-shaders.lua           -- Shader filetype detection, treesitter grammars, syntax
    kickstart/
      plugins/                      -- Stock kickstart optional plugins (not currently loaded)

Installed Plugins

Core (from kickstart)

Plugin	Purpose
folke/lazy.nvim	Plugin manager
tpope/vim-sleuth	Auto-detect tabstop and shiftwidth
lewis6991/gitsigns.nvim	Git change signs in the gutter (+, ~, _)
folke/which-key.nvim	Popup showing pending keybinds (delay set to 0)
nvim-telescope/telescope.nvim	Fuzzy finder for files, grep, LSP symbols, buffers, help, etc. Tracks master branch (not 0.1.x) to stay compatible with Neovim 0.11+
neovim/nvim-lspconfig	LSP client configuration
williamboman/mason.nvim	LSP/tool installer
williamboman/mason-lspconfig.nvim	Bridges Mason and lspconfig
WhoIsSethDaniel/mason-tool-installer.nvim	Ensures specified tools are installed
stevearc/conform.nvim	Autoformatting (format on save, <leader>f to format manually)
folke/lazydev.nvim	Lua LSP config for editing Neovim config files
folke/todo-comments.nvim	Highlights TODO, FIXME, HACK, WARN, NOTE, TEST in comments
echasnovski/mini.nvim	mini.ai (better text objects), mini.surround, mini.statusline
nvim-treesitter/nvim-treesitter	Syntax highlighting and code parsing

Custom Additions

Plugin	Purpose
ms-jpq/coq_nvim	Completion engine (replaces nvim-cmp). Has ghost text, snippets via coq.artifacts, math evaluation via coq.thirdparty. Tuned timeouts for Roslyn.
sainnhe/gruvbox-material	Colorscheme. Hard background, material foreground, italic + bold enabled.
akinsho/bufferline.nvim	Visual tab bar at the top, configured in tabs mode (not buffers).
nvimdev/dashboard-nvim	Start screen with "HasteVim" ASCII art and shortcut hints.
dgagn/diagflow.nvim	Shows diagnostics inline as virtual text near the cursor rather than at end of line.
j-hui/fidget.nvim	LSP progress spinner in the bottom-right. Custom integration bridges Roslyn-specific events (solution loading, NuGet restore progress) into fidget's progress API.
nvim-neo-tree/neo-tree.nvim	File tree sidebar. Toggle with \.
seblyng/roslyn.nvim	Manages the Roslyn C# language server. Loads on .cs files. Uses broad_search to find .sln files up the directory tree.
kalvinpearce/ShaderHighlight	Vim regex syntax for ShaderLab, HLSL, GLSL, Cg files. Needed because no treesitter parser exists for ShaderLab.

LSP Servers

Servers are installed and managed through Mason. The Mason config includes a custom registry (Crashdummyy/mason-registry) to provide the Roslyn LSP binary.

Server	Language(s)	Notes
lua_ls	Lua	Default from kickstart, for editing nvim config
glsl_analyzer	GLSL	For shader development
roslyn	C#	Managed by roslyn.nvim, not directly in the Mason servers table. Loads when a .cs file is opened. Settings are in after/lsp/roslyn.lua.

Roslyn LSP Settings (after/lsp/roslyn.lua)

The Roslyn config enables completion from unimported namespaces (helpful for Unity APIs like UnityEngine.UI), inlay hints for implicit types and lambda parameters, references code lens, and background analysis scoped to open files (change to fullSolution for project-wide diagnostics at the cost of higher resource usage).

Known Roslyn Quirk

Roslyn can take 15-30+ seconds to fully index a Unity project after attaching. LSP features like go-to-definition and find-references may not work until indexing finishes, even after fidget reports that Roslyn has attached. If things are not responding, give it more time. Ensure Unity has been opened at least once so the .sln and .csproj files exist and are up to date.

Completion Engine: coq_nvim

This config uses coq_nvim instead of nvim-cmp. The coq.lua custom plugin explicitly disables the entire nvim-cmp ecosystem (nvim-cmp, cmp-nvim-lsp, cmp-path, cmp_luasnip, LuaSnip) and loads coq_nvim with auto_start = 'shut-up'. The Mason lspconfig handler wraps each server with coq.lsp_ensure_capabilities() so all LSP servers feed into coq.

coq provides completions from LSP, treesitter, buffer words, file paths, and its built-in snippet library (9000+ snippets including C#). Ghost text previews are enabled.

coq Default Keybinds (in insert mode)

Key	Action
<C-Space>	Manual trigger completion
<C-n> / <C-p>	Navigate completion menu
<C-e>	Dismiss completion
<leader>j	Evaluate snippets

Unity Shader Setup

Unity shader files use two languages: ShaderLab (the outer DSL for Shader/SubShader/Pass blocks) and HLSL (the actual shader programs inside CGPROGRAM/ENDCG blocks).

Filetype detection is configured in unity-shaders.lua:

• .shader files are mapped to shaderlab filetype (vim regex syntax from ShaderHighlight, since no treesitter parser exists)
• .cginc, .hlsli, .compute, .cg files are mapped to hlsl (treesitter highlighting)
• .glsl, .vert, .frag, .geom, .tesc, .tese, .comp files are mapped to glsl (treesitter highlighting)

All shader files get 4-space indentation and // %s comment strings set automatically.

Keybindings Reference

General / Custom

These are mappings added or changed from the kickstart defaults. The leader key is <Space>.

Shortcut	Mode	Action
jj	Insert, Visual, Command	Escape (exit to Normal mode)
<leader>ww	Normal	Save buffer (:w)
<leader>wq	Normal	Save and quit (:wq)
<leader>tn	Normal	Open new tab
<leader>tl	Normal	Next tab
<leader>th	Normal	Previous tab
<leader>tc	Normal	Save and close current tab
<leader>t0	Normal	Go to first tab
<leader>t$	Normal	Go to last tab
<leader>rv	Normal	Rename in file using vim substitute (all occurrences). Puts cursor in command line with the word under cursor pre-filled -- type the replacement name over NEW_NAME.
<leader>rV	Normal	Same as above but with confirmation for each occurrence (/gc)
\	Normal	Toggle Neo-tree file browser
<leader>f	Any	Format buffer with conform.nvim

Telescope (Fuzzy Finding)

Shortcut	Action
<leader>sf	Search files
<leader>sg	Search by grep (live grep across project)
<leader>sw	Search current word under cursor
<leader>sh	Search help tags
<leader>sk	Search keymaps
<leader>ss	Search Telescope pickers (meta-search)
<leader>sd	Search diagnostics
<leader>sr	Resume last Telescope search
<leader>s.	Search recent files
<leader>s/	Live grep in open files only
<leader>sn	Search Neovim config files
<leader>/	Fuzzy search in current buffer
<leader><leader>	Find existing buffers

LSP (active when a language server is attached)

Shortcut	Action
gd	Go to definition (opens in new tab if in a different file, via jump_type = 'tab drop')
g0	Find references (opens in new tab via jump_type = 'tab drop')
gI	Go to implementation
gD	Go to declaration
<leader>D	Go to type definition
<leader>ds	Document symbols (fuzzy list of functions, variables, etc. in current file)
<leader>ws	Workspace symbols (same but across entire project)
<leader>rn	Rename symbol (LSP rename across files)
<leader>ca	Code action (quick fixes, refactors)
<leader>lh	Toggle LSP inlay hints

Window Navigation

Shortcut	Action
<C-h>	Move focus to left window
<C-l>	Move focus to right window
<C-j>	Move focus to lower window
<C-k>	Move focus to upper window

Other Defaults Worth Remembering

Shortcut	Action
<Esc>	Clear search highlights (in Normal mode)
<Esc><Esc>	Exit terminal mode
<leader>q	Open diagnostic quickfix list

mini.nvim Text Objects and Surround

Example	Action
va)	Visually select around parentheses
yinq	Yank inside next quote
ci'	Change inside single quotes
saiw)	Surround add inner word with parentheses
sd'	Surround delete single quotes
sr)'	Surround replace ) with '

which-key Groups

Pressing <leader> and waiting will show a popup with these groups:

Prefix	Group
<leader>c	Code
<leader>d	Document
<leader>l	LSP
<leader>r	Rename
<leader>s	Search
<leader>w	Workspace / Write
<leader>t	Tabs
<leader>h	Git Hunk

Options and Behaviors

Notable vim options set in init.lua:

• Relative line numbers enabled
• Mouse enabled
• System clipboard synced (unnamedplus)
• Persistent undo history across sessions (undofile)
• Case-insensitive search unless capitals are used
• Splits open to the right and below
• Whitespace characters shown (tab, trailing space, nbsp)
• Live substitution preview in a split
• Cursor line highlighted
• Scroll offset of 10 lines
• Yank highlighting on copy
• Format on save enabled (disabled for C/C++)
• Unity nvim server socket (/tmp/nvimsocket) cleaned up on exit

Useful Commands

Command	Purpose
:Lazy	Open the plugin manager UI. Press ? for help.
:Lazy update	Update all plugins
:Lazy sync	Sync plugin lockfile
:Mason	Open Mason UI to see/install LSP servers and tools
:Telescope keymaps	Browse all active keymaps (same as <leader>sk)
:checkhealth	Diagnose configuration issues
:Tutor	Built-in Neovim tutorial
:ConformInfo	See which formatters are active for the current file
:TSUpdate	Update treesitter grammars

Dependencies

• Neovim 0.11+ (stable or nightly)
• A Nerd Font installed and set in your terminal (have_nerd_font = true)
• git, make, unzip, a C compiler (gcc)
• ripgrep (used by Telescope's live grep)
• A clipboard tool (xclip, xsel, win32yank, etc.)
• For Unity development: the Unity editor must have been opened at least once so it generates .sln and .csproj files for Roslyn to consume

Repo

https://github.com/sbeitelmal/MyNvimConfig