nixos-dotfiles/user/configs/neovim/init.lua

vim.g.mapleader = ","

-- 4 space tabs
vim.o.expandtab = true
vim.o.shiftwidth = 2
vim.o.tabstop = 2
vim.o.smartindent = true

vim.o.clipboard = "unnamedplus"
vim.o.termguicolors = true
vim.o.ignorecase = true
vim.o.smartcase = true
vim.o.lazyredraw = true
vim.o.timeoutlen = 100

vim.wo.number = true
vim.wo.relativenumber = true

require("catppuccin").setup({
  flavour = "macchiato"
})
vim.cmd.colorscheme "catppuccin"

require("lualine").setup({
  options = {
    theme = "catppuccin"
  }
})

require("bufferline").setup({
  highlights = require("catppuccin.groups.integrations.bufferline").get(),
  options = {
    show_tab_indicators = true,
    separator_style = { "", "" },
  },
})

require("colorizer").setup()
require("nvim-autopairs").setup()
require("Comment").setup()

require("neo-tree").setup({
  default_component_configs = {
    icon = {
      folder_empty = "󰜌",
      folder_empty_open = "󰜌",
    },
    git_status = {
      symbols = {
        renamed   = "󰁕",
        unstaged  = "󰄱",
      },
    },
  },
  document_symbols = {
    kinds = {
      File = { icon = "󰈙", hl = "Tag" },
      Namespace = { icon = "󰌗", hl = "Include" },
      Package = { icon = "󰏖", hl = "Label" },
      Class = { icon = "󰌗", hl = "Include" },
      Property = { icon = "󰆧", hl = "@property" },
      Enum = { icon = "󰒻", hl = "@number" },
      Function = { icon = "󰊕", hl = "Function" },
      String = { icon = "󰀬", hl = "String" },
      Number = { icon = "󰎠", hl = "Number" },
      Array = { icon = "󰅪", hl = "Type" },
      Object = { icon = "󰅩", hl = "Type" },
      Key = { icon = "󰌋", hl = "" },
      Struct = { icon = "󰌗", hl = "Type" },
      Operator = { icon = "󰆕", hl = "Operator" },
      TypeParameter = { icon = "󰊄", hl = "Type" },
      StaticMethod = { icon = '󰠄 ', hl = 'Function' },
    }
  },
})
vim.keymap.set("n", "<C-n>", "<cmd>NeoTreeFocusToggle<CR>")

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

require("which-key").setup()

local ts_builtin = require("telescope.builtin")
vim.keymap.set('n', '<leader>ff', ts_builtin.find_files, { desc = "Find Files" })
vim.keymap.set('n', '<leader>fg', ts_builtin.live_grep, { desc = "Live Grep" })
vim.keymap.set('n', '<leader>fb', ts_builtin.buffers, { desc = "List Buffers" })
vim.keymap.set('n', '<leader>fh', ts_builtin.help_tags, { desc = "Help Tags" })
vim.keymap.set('n', '<leader>fc', ts_builtin.git_files, { desc = "Find Files (Git)" })

require("telescope").load_extension("fzf")

local lspconfig = require("lspconfig")
lspconfig.rnix.setup {}
lspconfig.lua_ls.setup {
  settings = {
    Lua = {
      diagnostics = {
        globals = {"vim"},
      },
      telemetry = {
        enable = false,
      },
    },
  },
}
lspconfig.clangd.setup {}

local cmp = require("cmp")
local lspkind = require("lspkind")
cmp.setup({
  preselect = cmp.PreselectMode.None,
  formatting = {
    format = lspkind.cmp_format ({
      mode = "symbol",
      maxwidth = 50,
      ellipsis_char = "...",

      symbol_map = {
        Text = "󰉿",
        Method = "󰆧",
        Function = "󰊕",
        Constructor = "",
        Field = "",
        Variable = "󰀫",
        Class = "",
        Interface = "",
        Module = "",
        Property = "",
        Unit = "",
        Value = "󰎠",
        Enum = "",
        Keyword = "󰌋",
        Snippet = "",
        Color = "󰏘",
        File = "󰈙",
        Reference = "󰈇",
        Folder = "󰉋",
        EnumMember = "",
        Constant = "󰏿",
        Struct = "",
        Event = "",
        Operator = "󰆕",
        TypeParameter = ""
      },

    }),
  },

  window = {
    completion = cmp.config.window.bordered(),
    documentation = cmp.config.window.bordered(),
  },

  sources = cmp.config.sources ({
    { name = "buffer" },
    { name = "path" },
    { name = "nvim_lsp" },
  }),

  mapping = cmp.mapping.preset.insert({
    ['<C-b>'] = cmp.mapping.scroll_docs(-4),
    ['<C-f>'] = cmp.mapping.scroll_docs(4),
    ['<C-Space>'] = cmp.mapping.complete(),
    ['<C-e>'] = cmp.mapping.abort(),
    ['<CR>'] = cmp.mapping.confirm({ select = false }),
  }),
})

local cmp_autopairs = require('nvim-autopairs.completion.cmp')
cmp.event:on(
'confirm_done',
cmp_autopairs.on_confirm_done()
)

cmp.setup.cmdline(":", {
  mapping = cmp.mapping.preset.cmdline(),
  sources = cmp.config.sources({
    { name = "path" },
    { name = "cmdline" },
  })
})

cmp.setup.cmdline("/", {
  mapping = cmp.mapping.preset.cmdline(),
  sources = cmp.config.sources({
    { name = "buffer" },
  })
})