nvim-cmp VS rust-tools.nvim

Compare nvim-cmp vs rust-tools.nvim and see what are their differences.


A completion plugin for neovim coded in Lua. (by hrsh7th)


Tools for better development in rust using neovim's builtin lsp (by simrat39)
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nvim-cmp rust-tools.nvim
250 90
7,234 2,165
- -
8.1 0.0
11 days ago 5 months ago
Lua Lua
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of nvim-cmp. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-12-10.
  • What is this red color in cmp?
    1 project | /r/neovim | 11 Dec 2023
    vim.api.nvim_set_hl(0, "PmenuSel", { bg = c.background_light, fg = "NONE" }) vim.api.nvim_set_hl(0, "Pmenu", { fg = c.foreground, bg = c.background_light }) vim.api.nvim_set_hl(0, "CmpItemAbbrDeprecated", { fg = c.foreground_light, bg = "NONE", strikethrough = true }) vim.api.nvim_set_hl(0, "CmpItemAbbrMatch", { fg = c.blue , bg = "NONE", bold = true }) vim.api.nvim_set_hl(0, "CmpItemAbbrMatchFuzzy", { fg = c.blue, bg = "NONE", bold = true }) vim.api.nvim_set_hl(0, "CmpItemMenu", { fg = c.purple, bg = "NONE", italic = true }) vim.api.nvim_set_hl(0, "CmpItemKindField", { fg = c.red }) vim.api.nvim_set_hl(0, "CmpItemKindProperty", { fg = c.red }) vim.api.nvim_set_hl(0, "CmpItemKindEvent", { fg = c.red }) vim.api.nvim_set_hl(0, "CmpItemKindText", { fg = c.green }) vim.api.nvim_set_hl(0, "CmpItemKindEnum", { fg = c.green }) vim.api.nvim_set_hl(0, "CmpItemKindKeyword", { fg = c.green }) vim.api.nvim_set_hl(0, "CmpItemKindConstant", { fg = c.yellow }) vim.api.nvim_set_hl(0, "CmpItemKindConstructor", { fg = c.yellow }) vim.api.nvim_set_hl(0, "CmpItemKindReference", { fg = c.yellow }) vim.api.nvim_set_hl(0, "CmpItemKindFunction", { fg = c.purple }) vim.api.nvim_set_hl(0, "CmpItemKindStruct", { fg = c.purple }) vim.api.nvim_set_hl(0, "CmpItemKindClass", { fg = c.purple }) vim.api.nvim_set_hl(0, "CmpItemKindModule", { fg = c.purple }) vim.api.nvim_set_hl(0, "CmpItemKindOperator", { fg = c.purple }) vim.api.nvim_set_hl(0, "CmpItemKindVariable", { fg = c.foreground }) vim.api.nvim_set_hl(0, "CmpItemKindFile", { fg = c.foreground }) vim.api.nvim_set_hl(0, "CmpItemKindUnit", { fg = c.orange }) vim.api.nvim_set_hl(0, "CmpItemKindSnippet", { fg = c.orange }) vim.api.nvim_set_hl(0, "CmpItemKindFolder", { fg = c.orange }) vim.api.nvim_set_hl(0, "CmpItemKindMethod", { fg = c.blue }) vim.api.nvim_set_hl(0, "CmpItemKindValue", { fg = c.blue }) vim.api.nvim_set_hl(0, "CmpItemKindEnumMember", { fg = c.blue }) vim.api.nvim_set_hl(0, "CmpItemKindInterface", { fg = c.aqua }) vim.api.nvim_set_hl(0, "CmpItemKindColor", { fg = c.aqua }) vim.api.nvim_set_hl(0, "CmpItemKindTypeParameter", { fg = c.aqua }) -- https://github.com/hrsh7th/nvim-cmp/pull/1689 vim.api.nvim_set_hl(0, 'FloatBorder', { fg = c.background_light, bg = c.background_light })
  • cmp border background is changed all of a sudden.
    2 projects | /r/neovim | 10 Dec 2023
    Doing a fast scan on the commit history this is probably related to https://github.com/hrsh7th/nvim-cmp/pull/1689 . Hope it helps.
  • Do I need NeoVIM?
    11 projects | /r/neovim | 7 Dec 2023
    https://github.com/hrsh7th/nvim-cmp This is an autocompletion engine https://github.com/nvim-treesitter/nvim-treesitter This allows NeoVim to install parsing scripts so NeoVim can do things like code highlighting. https://github.com/williamboman/mason.nvim Not strictly necessary, but allows you to access a repo of LSP, install them, and configure them for without you actively messing about in config files. https://github.com/neovim/nvim-lspconfig Also not strictly necessary, but vastly simplifies LSP setup. https://github.com/williamboman/mason-lspconfig.nvim This lets the above two plugins talk to each other more easily.
  • Can't go down when writing a command nvim
    1 project | /r/neovim | 4 Dec 2023
    Edit: Solved I only had to do this
  • What is your most anticipated PR?
    1 project | /r/neovim | 20 Nov 2023
    toggling sources by Treesitter context
  • About some deprecations in Neovim core
    1 project | /r/neovim | 26 Oct 2023
    But today I'm a different person, and I'm sure that this is the right decision. I already gave a spiel on the cmp PR, but lemme copy-paste my response for those that weren't following the issue or don't check their GitHub notifications:
  • nvim starts multiple node processes leading to very high memory usage
    1 project | /r/neovim | 17 Oct 2023
    EDIT: I was able to reproduce the issue with a simplified nvim-cmp init.vim - posted here: https://github.com/hrsh7th/nvim-cmp/issues/1728
  • [Need Help]: I am having trouble getting autocomplete with clangd.
    2 projects | /r/neovim | 25 Aug 2023
    You need to add nvim-cmp and cmp-nvim-lsp
  • is it possible to limit the size of nvim-cmps autocompletion window?
    1 project | /r/neovim | 18 Jul 2023
    one thing that always annoyed me is how the autocomplete window behaves. when the space below your current line isn't sufficient it just teleports above the line. i know you can set a custom menu direction but i'd much rather have it pop up in a consistent place that is below the current line. the other behavior i dislike is the sizing. it's as big as the longest function in the list which can make the window enormous, to the point where there's almost no place left for the docs window. there aren't really any docs in the example below but i imagine with the little space that is left it'll get troublesome for more verbose docs such as with rust. i'd like to somehow tell nvim-cmp to always pop up below the current line, no matter how long the list is and possibly limit the horizontal size. is that at all possible? i've looked through the nvim-cmp wiki but haven't found an adequate solution. does this go beyond nvim-cmp?
  • Toggling the nvim-cmp documentation window
    1 project | /r/neovim | 4 Jul 2023
    Update: This isn't currently supported by nvim-cmp (and in fact it has been a feature request for a bit) and so I did my best and opened a PR that implements it :)


Posts with mentions or reviews of rust-tools.nvim. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-05.
  • [Experimental] Auto find Rust executables for DAP | Linux
    1 project | /r/neovim | 20 Aug 2023
    This is not a robust solution to the problem. I haven't worked on a large Rust project, so I do not know if this is valid for all kinds of Rust projects. Maybe there is a better debugging config setups/plugins out there (simrat39/rust-tools.nvim is one from what I have searched for). I plan to keep using this config, till it breaks; and try and fix it when it does.
  • NeoVim IDE setup
    2 projects | /r/rust | 5 Jun 2023
    rust-tools is what I'm currently using, https://github.com/simrat39/rust-tools.nvim
  • What editor are you using for Rust?
    8 projects | /r/rust | 1 Jun 2023
    I then took the snippet from, I also changed the path to the correct install path of the above. https://github.com/simrat39/rust-tools.nvim/wiki/Debugging
  • Neovim & Rust
    5 projects | /r/neovim | 26 May 2023
    rust-tools.nvim and crates.nvim should be helpful for you. :)
  • What's your current Vim+Rust setup?
    9 projects | /r/rust | 15 May 2023
    I'd start with nvim-treesitter, nvim-lspconfig, and use rust-tools.nvim as an accelerant. Any remaining advice I'd have is about Neovim but not about Rust. That advice would also be mostly questions of taste for this-or-that decisions.
  • Refactoring
    1 project | /r/rust | 14 May 2023
    Are you using https://github.com/simrat39/rust-tools.nvim/ ?
  • Rust + Neovim setup gotcha
    1 project | /r/neovim | 7 May 2023
    TIL that if you install Rust via Homebrew (like brew install rust), auto formatting (or more specifically, lsp formatting) doesn't work properly. I used both Rust Analyzer and rust-tools) to setup rust lsp and configured it with tons of options, thinking maybe something will work but somehow, one thing never did - auto formatting. This is the command I use for setting up auto formatting via lsp:
  • What setup do you use to program in rust?
    5 projects | /r/rust | 3 May 2023
    neovim + native lsp with rust-tools.nvim, running nixos so I use flakes for my dev environments
  • [Neovim] Rust-tools.nvim: outils pour des fonctionnalités supplémentaires sur Rust Analyzer
    1 project | /r/enfrancais | 19 Apr 2023
  • NVim, Rust, LSP (rust-analyzer + rust-tools) issue
    2 projects | /r/neovim | 16 Apr 2023
    I opened an issue https://github.com/simrat39/rust-tools.nvim/issues/369 after searching for such behavior in existing ones. But I also ask here in case it's a known problem.

What are some alternatives?

When comparing nvim-cmp and rust-tools.nvim you can also consider the following projects:

coc.nvim - Nodejs extension host for vim & neovim, load extensions like VSCode and host language servers.

NvChad - Blazing fast Neovim config providing solid defaults and a beautiful UI, enhancing your neovim experience.

cmp-nvim-lsp - nvim-cmp source for neovim builtin LSP client

LunarVim - 🌙 LunarVim is an IDE layer for Neovim. Completely free and community driven.


helix - A post-modern modal text editor.

completion-nvim - A async completion framework aims to provide completion to neovim's built in LSP written in Lua

LuaSnip - Snippet Engine for Neovim written in Lua.

lsp_extensions.nvim - Repo to hold a bunch of info & extension callbacks for built-in LSP. Use at your own risk :wink:

ddc.vim - Dark deno-powered completion framework for neovim/Vim

nvim-treesitter - Nvim Treesitter configurations and abstraction layer