init.vim to init.lua migration

init.lua

vim.g.mapleader = ","

vim.opt.filetype="on"
vim.opt.filetype.indent="on"
vim.opt.filetype.plugin="on"

vim.opt.encoding="utf-8"

vim.opt.syntax="on"
vim.opt.compatible=false
vim.opt.hlsearch=true
vim.opt.relativenumber=true
vim.opt.laststatus=2
vim.opt.vb=true
vim.opt.ruler=true
vim.opt.spelllang="en_us"
vim.opt.autoindent=true
vim.opt.colorcolumn="110"
vim.opt.textwidth=110
vim.opt.mouse="a"
vim.opt.clipboard="unnamed"
vim.opt.scrollbind=false
vim.opt.wildmenu=true

-- netrw stuff {{{
vim.cmd([[
nnoremap - :Explore<CR>
autocmd FileType netrw setl bufhidden=delete
]])

vim.g.netrw_banner=0
vim.g.netrw_liststyle=3
vim.g.netrw_bufsettings="noma nomod nu nobl nowrap ro"
-- }}}

-- Plugings Configuraton

-- vim-gitgutter {{
vim.opt.updatetime=1000
-- }}

-- papercolor-theme {{
vim.opt.termguicolors=true
vim.opt.background="dark"
vim.cmd("colorscheme PaperColor")
-- }}

-- lspsaga {{
local saga = require 'lspsaga'
saga.init_lsp_saga()

vim.cmd([[
nnoremap <silent> gh <cmd>lua require'lspsaga.provider'.lsp_finder()<CR>

nnoremap <silent> K <cmd>lua require('lspsaga.hover').render_hover_doc()<CR>

nnoremap <silent><leader>ca <cmd>lua require('lspsaga.codeaction').code_action()<CR>
vnoremap <silent><leader>ca :<C-U>lua require('lspsaga.codeaction').range_code_action()<CR>

nnoremap <silent>gr <cmd>lua require('lspsaga.rename').rename()<CR>
]])
-- }}

-- nvim-cmp {{
local cmp = require'cmp'
cmp.setup({
  snippet = {
    expand = function(args)
      vim.fn["UltiSnips#Anon"](args.body)
    end,
  },
  mapping = {
    ['<C-b>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
    ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
    ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
    ['<C-y>'] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
    ['<C-e>'] = cmp.mapping({
      i = cmp.mapping.abort(),
      c = cmp.mapping.close(),
    }),
    ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
  },
  sources = cmp.config.sources({
    { name = 'nvim_lsp' },
    { name = 'ultisnips' },
  }, {
    { name = 'buffer' },
  })
})

-- lspconfig {{
local capabilities = require("cmp_nvim_lsp").default_capabilities()

local on_attach = function(client, bufnr)
  -- Enable completion triggered by <c-x><c-o>
  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  -- See `:help vim.lsp.*` for documentation on any of the below functions
  local bufopts = { noremap=true, silent=true, buffer=bufnr }
  vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
  vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
  vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
  vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
  vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
  vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, bufopts)
  vim.keymap.set('n', 'rn', vim.lsp.buf.rename, bufopts)
  vim.keymap.set('n', '<space>ca', vim.lsp.buf.code_action, bufopts)
  vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
end

require('lspconfig')['gopls'].setup {
  capabilities = capabilities,
  on_attach = on_attach
}
-- }}

-- lspkind-nvim {{
local lspkind = require('lspkind')

cmp.setup {
  formatting = {
    format = lspkind.cmp_format({
      mode = 'symbol_text',
      maxwidth = 50,

      before = function (entry, vim_item)
        return vim_item
      end
    })
  }
}
-- }}

-- treesitter {{
require'nvim-treesitter.configs'.setup {
  ensure_installed = { "go", "ruby" },
  sync_install = false,
  highlight = {
    enable = true,
    -- Setting this to true will run `:h syntax` and tree-sitter at the same time.
    -- Set this to `true` if you depend on 'syntax' being enabled (like for indentation).
    -- Using this option may slow down your editor, and you may see some duplicate highlights.
    -- Instead of true it can also be a list of languages
    additional_vim_regex_highlighting = false,
  },
}
-- }}

-- Packer, install like: {{
-- git clone --depth 1 https://github.com/wbthomason/packer.nvim \
--   ~/.config/nvim/pack/packer/start/packer.nvim
return require("packer").startup(function()
  use "wbthomason/packer.nvim"

  -- Must have
  use "airblade/vim-gitgutter"          -- https://github.com/airblade/vim-gitgutter
  use "bronson/vim-trailing-whitespace" -- https://github.com/bronson/vim-trailing-whitespace
  use "ctrlpvim/ctrlp.vim"              -- https://github.com/ctrlpvim/ctrlp.vim
  use "mkitt/tabline.vim"               -- https://github.com/mkitt/tabline.vim
  use "rhysd/vim-clang-format"          -- https://github.com/rhysd/vim-clang-format
  use "ryanoasis/vim-devicons"          -- https://github.com/ryanoasis/vim-devicons + https://github.com/ryanoasis/nerd-fonts/
  use "tpope/vim-commentary"            -- https://github.com/tpope/vim-commentary
  use "vim-airline/vim-airline"         -- https://github.com/vim-airline/vim-airline

  -- Eye-candy
  use "NLKNguyen/papercolor-theme" -- https://github.com/NLKNguyen/papercolor-theme

  -- Filetypes
  use "chrisbra/csv.vim" -- https://github.com/chrisbra/csv.vim

  -- Go
  use "fatih/vim-go" -- https://github.com/fatih/vim-go

  -- Development
  use "SirVer/ultisnips"                    -- https://github.com/sirver/UltiSnips
  use "hrsh7th/cmp-nvim-lsp"                -- https://github.com/hrsh7th/cmp-nvim-lsp
  use "hrsh7th/nvim-cmp"                    -- https://github.com/hrsh7th/nvim-cmp/
  use "neovim/nvim-lspconfig"               -- https://github.com/neovim/nvim-lspconfig
  use "onsails/lspkind-nvim"                -- https://github.com/onsails/lspkind-nvim
  use "quangnguyen30192/cmp-nvim-ultisnips" -- https://github.com/quangnguyen30192/cmp-nvim-ultisnips
  use "williamboman/nvim-lsp-installer"     -- https://github.com/williamboman/nvim-lsp-installer
  use {
    "nvim-treesitter/nvim-treesitter",      -- https://github.com/nvim-treesitter/nvim-treesitter
    run = ':TSUpdate'
  }
end)
-- }}