diff --git a/addon-info.json b/addon-info.json
new file mode 100644
index 0000000..a2bf165
--- /dev/null
+++ b/addon-info.json
@@ -0,0 +1,10 @@
+{
+  "name": "requirements",
+  "description": "the Requirements File Format syntax support for Vim",
+  "version": "1.7.1",
+  "author": "raimon",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/raimon49/requirements.txt.vim"
+  }
+}
diff --git a/autoload/coc/source/requirements.vim b/autoload/coc/source/requirements.vim
new file mode 100644
index 0000000..ea778d8
--- /dev/null
+++ b/autoload/coc/source/requirements.vim
@@ -0,0 +1,20 @@
+""
+" https://github.com/neoclide/coc.nvim/wiki/Create-custom-source
+function! coc#source#requirements#init() abort
+    return {
+                \ 'shortcut': 'pip',
+                \ 'priority': 9,
+                \ 'filetypes': ['requirements'],
+                \ }
+endfunction
+
+""
+" https://github.com/neoclide/coc.nvim/wiki/Create-custom-source
+"
+" Completion pip option and PYPI package names.
+" Note: completion PYPI package names need install pip-cache from PYPI,
+" and run `pip-cache update` first to generate cache.
+function! coc#source#requirements#complete(opt, cb) abort
+    call a:cb(g:requirements#items)
+endfunction
+" vim: et sw=4 ts=4 sts=4:
diff --git a/autoload/requirements.vim b/autoload/requirements.vim
new file mode 100644
index 0000000..326d0a0
--- /dev/null
+++ b/autoload/requirements.vim
@@ -0,0 +1,44 @@
+""
+" @section Introduction, intro
+" @library
+" <doc/@plugin(name).txt> is generated by <https://github.com/google/vimdoc>.
+" See <README.md> for more information about installation and screenshots.
+
+""
+" Update cache.
+function! requirements#update_cache() abort
+    let s:items = []
+    let l:pip_items = split(system('COMP_WORDS="pip install -" COMP_CWORD=2 PIP_AUTO_COMPLETE=1 pip'))
+    let l:pypi_items = split(system('pip-cache pkgnames'))
+    for l:item in l:pip_items
+        let s:items += [{'word': l:item, 'menu': 'pip'}]
+    endfor
+    for l:item in l:pypi_items
+        let s:items += [{'word': l:item, 'menu': 'pypi'}]
+    endfor
+    call writefile([json_encode(s:items)], s:cache)
+endfunction
+
+if exists('*stdpath')
+    let s:cache_dir_home = stdpath('cache')
+else
+    let s:cache_dir_home = $HOME . '/.cache/nvim'
+endif
+let s:cache_dir = s:cache_dir_home . '/requirements.vim'
+call mkdir(s:cache_dir, 'p')
+""
+" Completion cache path.
+call g:requirements#utils#plugin.Flag('g:requirements#cache',
+            \ s:cache_dir . '/requirements.json'
+            \ )
+let s:cache = g:requirements#cache
+try
+    let s:items = json_decode(readfile(s:cache)[0])
+catch /\v^Vim%(\(\a+\))?:E(684|484|491):/
+    call requirements#update_cache()
+    let s:items = json_decode(readfile(s:cache)[0])
+endtry
+""
+" Completion cache contents. For program.
+call g:requirements#utils#plugin.Flag('g:requirements#items', s:items)
+" vim: et sw=4 ts=4 sts=4:
diff --git a/autoload/requirements/utils.vim b/autoload/requirements/utils.vim
new file mode 100644
index 0000000..dbe8c9f
--- /dev/null
+++ b/autoload/requirements/utils.vim
@@ -0,0 +1,11 @@
+""
+" @section Configuration, config
+
+function! s:Flag(name, default) abort
+    let l:scope = get(split(a:name, ':'), 0, 'g:')
+    let l:name = get(split(a:name, ':'), -1)
+    let {l:scope}:{l:name} = get({l:scope}:, l:name, a:default)
+endfunction
+
+let g:requirements#utils#plugin = {'Flag': funcref('s:Flag')}
+" vim: et sw=4 ts=4 sts=4:
diff --git a/doc/.gitignore b/doc/.gitignore
new file mode 100644
index 0000000..120f485
--- /dev/null
+++ b/doc/.gitignore
@@ -0,0 +1,2 @@
+*
+!/.gitignore