Switch package manager to packer

home/.config/nvim/lua/pluginconf/airline.lua

@@ -2,15 +2,9 @@ local vim = require("vim")
 local g = vim.g
 local cmd = vim.cmd
 
-cmd[[
-Plug 'vim-airline/vim-airline'
-Plug 'vim-airline/vim-airline-themes'
-]]
-
--- Airline specific theming settings
-g.airline_theme = 'codedark'            -- Use codedark theme from vim-airline-themes
-g.airline_right_sep = ""                -- Don't use special separators (<)
-g.airline_left_sep = ""                 -- Don't use special separators (>)
+-- Don't use special separators
+g.airline_right_sep = ""    -- (default: <)
+g.airline_left_sep = ""     -- (default: >)
 
 -- Tabline setup
 -- TODO: Figure out how to set # separated variables in lua (open for PRs)

home/.config/nvim/lua/pluginconf/coc.vim

@@ -6,9 +6,6 @@
 " however if anyone knows how to completely reproduce everything here in lua,
 " this is open to pull requests
 
-Plug 'neoclide/coc.nvim', {'branch': 'release'}
-Plug 'antoinemadec/coc-fzf'
-
 let g:coc_global_extensions = [
     \ 'coc-pyright', 'coc-json', 'coc-git', 'coc-html', 'coc-css',
     \ 'coc-clangd', 'coc-cmake', 'coc-java', 'coc-sh', 'coc-toml',

home/.config/nvim/lua/pluginconf/commentary.lua

@@ -1,9 +1,9 @@
 local vim = require("vim")
 local cmd = vim.cmd
 
-cmd[[Plug 'tpope/vim-commentary']]
-
+-- Set up shortcuts to quickly comment some code
 Keymap("n", "<A-/>", ":Commentary<CR>")
 Keymap("v", "<A-/>", ":Commentary<CR>")
 
+-- Set up comments for unhandled file types
 cmd[[autocmd FileType apache setlocal commentstring=#\ %s]]

home/.config/nvim/lua/pluginconf/deprecated/semshi.lua

@@ -11,7 +11,7 @@ local fn = vim.fn
 -- when I access something as an attribute, but it would be neat to see what that
 -- attribute actually holds, is it a class or a fucntion. But from my searching,
 -- I wasn't able to find anything like this. This is open to pull requests.
-cmd[[Plug 'numirias/semshi', { 'do': ':UpdateRemotePlugins' }]]
+-- Plugin: numirias/semshi
 
 if (fn.has("python3")) then
     fn.system({"pip", "install", "nvim", "--upgrade"})

home/.config/nvim/lua/pluginconf/fzf.lua

@@ -2,10 +2,6 @@ local vim = require("vim")
 local cmd = vim.cmd
 local g = vim.g
 
-cmd[[Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }]]
-cmd[[Plug 'junegunn/fzf.vim']]
-cmd[[Plug 'stsewd/fzf-checkout.vim']]
-
 g.fzf_layout = {
     up = '~90%',
     window = {

home/.config/nvim/lua/pluginconf/nerdtree.lua

@@ -3,12 +3,6 @@ local g = vim.g
 local fn = vim.fn
 local cmd = vim.cmd
 
-cmd[[
-Plug 'preservim/nerdtree'
-Plug 'Xuyuanp/nerdtree-git-plugin'
-Plug 'tiagofumo/vim-nerdtree-syntax-highlight'
-]]
-
 -- Implement manual NERDTreeToggle, but use NERDTreeFind for openning.
 -- This makes NERDTree open with the current file pre-selected
 Keymap("n", "<C-n>", "g:NERDTree.IsOpen() ? ':NERDTreeClose<CR>' : @% == '' ? ':NERDTree<CR>' : ':NERDTreeFind<CR>'", {expr=true})

home/.config/nvim/lua/pluginconf/polyglot.lua

@@ -2,8 +2,6 @@ local vim = require("vim")
 local cmd = vim.cmd
 local g = vim.g
 
-cmd[[Plug 'sheerun/vim-polyglot']]
-
 -- Disable polyglot's "sensible" settings, while there are some nice things it
 -- does, I set these manually in my default config and I don't like depending
 -- on single plugin for so many things, doing it manually doing it manually is

home/.config/nvim/lua/pluginconf/vim-code-dark.lua

@@ -1,12 +1,4 @@
 local vim = require("vim")
 local cmd = vim.cmd
 
-cmd[[Plug 'tomasiser/vim-code-dark']]
-
--- Set vim-code-dark as colortheme after plugin loading was finished
-cmd[[
-augroup VimCodeDark
-    autocmd!
-    autocmd User PlugLoaded ++nested colorscheme codedark
-augroup end
-]]
+cmd[[colorscheme codedark]]

home/.config/nvim/lua/pluginconf/vimwiki.lua

@@ -2,8 +2,6 @@ local vim = require("vim")
 local cmd = vim.cmd
 local g = vim.g
 
-cmd[[Plug 'vimwiki/vimwiki']]
-
 local wiki_conf = {}
 wiki_conf["path"] = "~/Personal/vimwiki"
 wiki_conf["path_html"] = "~/Personal/vimwiki-html"

home/.config/nvim/lua/plugins.lua

@@ -1,56 +1,119 @@
 local vim = require("vim")
 local cmd = vim.cmd
+local api = vim.api
 local fn = vim.fn
 
-local config_dir = fn.stdpath("config")                     -- Config directory (usually: ~/.config/nvim)
-local plugvim_plugins_dir = config_dir .. "/plugged"        -- Dir with all plugins installed by Plug.vim
-local plugin_files_dir = config_dir .. "/lua/pluginconf"    -- Dir with plugin config files including Plug call(s)
-
--- Automatically download vimplug and run PlugInstall
-local autoload_dir = config_dir .. "/autoload"
-local plug_install_path = autoload_dir .. "/plug.vim"
-local plug_download_url = "https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim"
-
-if fn.empty(fn.glob(plug_install_path)) > 0 then
-    print("Downloading vim-plug, there may be initial errors...")
-    fn.system({"mkdir", "-p", autoload_dir})
-    fn.system("curl " .. plug_download_url .. " > " .. plug_install_path)
-    cmd[[autocmd VimEnter * PlugInstall]]
-    cmd[[autocmd VimEnter * UpdateRemotePlugins]]
+-- Automatically download (bootstrap) packer plugin manager
+-- if it's not already installed
+local packer_install_path = fn.stdpath("data") .. "/site/pack/packer/start/packer.nvim"
+local packer_bootstrap
+if fn.empty(fn.glob(packer_install_path)) > 0 then
+  print("Installing packer plugin manager, please wait...")
+  packer_bootstrap = fn.system({
+      'git', 'clone', '--depth', '1',
+      'https://github.com/wbthomason/packer.nvim',
+      packer_install_path
+  })
+  print("Packer installed, reload vim to install plugins")
 end
 
--- Load a file containing Plug call(s) and plugin settings
-local function load_plugin_file(plugin_file)
-    local plugin_path = plugin_files_dir .. "/" .. plugin_file
-    LoadFile(plugin_path)
+-- Automatically run :PackerCompile if plugins.lua is updated
+cmd[[
+augroup packer_user_config
+    autocmd!
+    autocmd BufWritePost ~/.config/nvim/lua/plugins.lua source <afile> | PackerCompile
+augroup end
+]]
+
+-- Returns the line to be executed after plugin is loaded, this
+-- is useful for the `config` parameter of packer's use to
+-- source `.vim` files or require `.lua` files
+-- Expects a file path from pluginconf/ folder
+local function get_plugin_file(pluginconf_file)
+    local filename, extension = pluginconf_file:match("^(.+)(%..+)$")
+    if (extension == ".vim") then
+        -- Source wants absolute path
+        local pluginconf_path = fn.stdpath("config") .. "lua/pluginconf"
+        local source_line = string.format('source "%s/%s"', pluginconf_path, pluginconf_file)
+        return string.format("vim.fn.execute('%s')", source_line)
+    else
+        -- Require wants relative path from lua/
+        local pluginconf_path = "pluginconf"
+        return string.format('require("%s/%s")', pluginconf_path, filename)
+    end
 end
 
--- Load a single given plugin using a Plug call
-local function load_plugin(plugin)
-    cmd("Plug '" .. plugin .. "'")
-end
+-- Make sure to add packer here, even if it's opt
+api.nvim_command("packadd packer.nvim")
 
+-- Define packer plugins
+return require("packer").startup({
+    function(use)
+        use("wbthomason/packer.nvim")
+        use('airblade/vim-gitgutter')
+        use('dhruvasagar/vim-table-mode')
+        use('tmhedberg/SimpylFold')
+        use('wakatime/vim-wakatime')
+        use('mhinz/vim-startify')
+        use('ryanoasis/vim-devicons')
+        use({
+            "tomasiser/vim-code-dark",
+            config = get_plugin_file("vim-code-dark.lua"),
+        })
+        use({
+            "vim-airline/vim-airline",
+            config = get_plugin_file("airline.lua"),
+            requires = { "vim-airline/vim-airline-themes", opt = true },
+        })
+        use({
+            "preservim/nerdtree",
+            config = get_plugin_file("nerdtree.lua"),
+            requires = {
+                { "Xuyuanp/nerdtree-git-plugin", opt = true },
+                { "tiagofumo/vim-nerdtree-syntax-highlight", opt = true },
+            },
+        })
+        use({
+            "vimwiki/vimwiki",
+            config = get_plugin_file("vimwiki.lua")
+        })
+        use({
+            "sheerun/vim-polyglot",
+            setup = get_plugin_file("polyglot.lua")
+        })
+        use({
+            "tpope/vim-commentary",
+            config = get_plugin_file("commentary.lua")
+        })
+        use({
+            "junegunn/fzf",
+            run = function() fn['fzf#install']() end,
+        })
+        use({
+            "junegunn/fzf.vim",
+            config = get_plugin_file("fzf.lua"),
+            after = "fzf",
+            requires = { "stsewd/fzf-checkout.vim", opt = true },
+        })
+        use({
+            "neoclide/coc.nvim",
+            branch = "release",
+            config = get_plugin_file("coc.vim"),
+            requires = { "antoinemadec/coc-fzf", opt = true },
+        })
 
--- Begin Plug.vim loading process
-cmd("call plug#begin('" .. plugvim_plugins_dir .. "')")
-
-load_plugin('airblade/vim-gitgutter')
-load_plugin('dhruvasagar/vim-table-mode')
-load_plugin('tmhedberg/SimpylFold')
-load_plugin('wakatime/vim-wakatime')
-load_plugin('mhinz/vim-startify')
-load_plugin('ryanoasis/vim-devicons')
-load_plugin_file("polyglot.lua")
-load_plugin_file("vim-code-dark.lua")
-load_plugin_file("commentary.lua")
-load_plugin_file("coc.vim")
-load_plugin_file("vimwiki.lua")
-load_plugin_file("nerdtree.lua")
-load_plugin_file("airline.lua")
-load_plugin_file("fzf.lua")
-
--- End Plug.vim loading process
-cmd[[call plug#end()]]
-
--- Run autocmds defined in the plugin files after plugin loading has finished
-cmd[[doautocmd User PlugLoaded]]
+        -- Run sync if we've just bootstrapped packer
+        if packer_bootstrap then
+            require("packer").sync()
+        end
+    end,
+    config = {
+        display = {
+            open_fn = require('packer.util').float,
+        },
+        profile = {
+            enable = true,
+            threshold = 1, -- the amount in ms that a plugins load time must be over for it to be included in the profile
+        },
+    }
+})