nixos-configuration/home/neovim/init.lua

require('packer').startup(function(use)
  use {
    'VonHeikemen/lsp-zero.nvim',
    requires = {
      -- LSP Support
      { 'neovim/nvim-lspconfig' },
      { 'williamboman/mason.nvim' },
      { 'williamboman/mason-lspconfig.nvim' },

      -- Autocompletion
      { 'hrsh7th/nvim-cmp' },
      { 'hrsh7th/cmp-buffer' },
      { 'hrsh7th/cmp-path' },
      { 'saadparwaiz1/cmp_luasnip' },
      { 'hrsh7th/cmp-nvim-lsp' },
      { 'hrsh7th/cmp-nvim-lua' },

      -- Snippets
      { 'L3MON4D3/LuaSnip' },
      { 'rafamadriz/friendly-snippets' },
    }
  }

  use {
    'simrat39/rust-tools.nvim',
    requires = {
      { 'neovim/nvim-lspconfig' },

      -- Debugging
      { 'nvim-lua/plenary.nvim' },
      { 'mfussenegger/nvim-dap' },
    },
  }

  use {
    'nvim-treesitter/nvim-treesitter',
    run = function() require('nvim-treesitter.install').update({ with_sync = true }) end,
  }

  use { 'kien/ctrlp.vim' }

  use { 'tpope/vim-commentary' }
  use { 'tpope/vim-surround' }
  -- repeat plugin commands using `.`
  use { 'tpope/vim-repeat' }
  -- autodetect indentation
  use { 'tpope/vim-sleuth' }

  -- git
  use { 'tpope/vim-fugitive' }
  use { 'airblade/vim-gitgutter' }

  use { 'farmergreg/vim-lastplace' }

  use { 'bronson/vim-trailing-whitespace' }
end)

local lsp = require('lsp-zero')

lsp.preset('recommended')
lsp.setup()

require('nvim-treesitter.configs').setup {
  ensure_installed = { "rust", "nix" },
  highlight={enable=true},
}

local rt = require("rust-tools")

rt.setup({
  server = {
    on_attach = function(_, bufnr)
      -- Hover actions
      vim.keymap.set("n", "<C-space>", rt.hover_actions.hover_actions, { buffer = bufnr })
      -- Code action groups
      vim.keymap.set("n", "<Leader>a", rt.code_action_group.code_action_group, { buffer = bufnr })
    end,
  },
})