如何从本地文件夹安装依赖项?

我正在尝试通过pip从本地文件夹安装依赖项。我的 requirements.txt 看起来像下面

--no-index

retrying==1.3.3
six==1.11.0

我遵循的步骤

support@vrni-platform:~$ mkdir app_depen
support@vrni-platform:~$ sudo pip install --download=/home/support/app_depen retrying==1.3.3

内容 /home/support/app_depen

support@vrni-platform:~$ ls -lah /home/support/app_depen/
total 32K
drwxrwx--- 2 support support 4.0K Sep 15 15:04 .
drwx------ 5 support support 4.0K Sep 15 15:09 ..
-rw-r----- 1 root    root     11K Sep 15 15:04 retrying-1.3.3.tar.gz
-rw-r----- 1 root    root     11K Sep 15 15:04 six-1.11.0-py2.py3-none-any.whl

support@vrni-platform:~$ sudo pip install -U --force-reinstall --allow-unverified --find-links=/home/support/app_depen/ -r requirements.txt

我得到下面的错误

Collecting retrying==1.3.3 (from -r requirements.txt (line 2))
  Could not find a version that satisfies the requirement retrying==1.3.3 (from -r requirements.txt (line 2)) (from versions: )
No matching distribution found for retrying==1.3.3 (from -r requirements.txt (line 2))

我试着像下面这样更改权限。但仍然得到同样的错误

support@vrni-platform:~$ ls -lah /home/support/app_depen/
total 32K
drwxrwx--- 2 support support 4.0K Sep 15 15:04 .
drwx------ 5 support support 4.0K Sep 15 15:09 ..
-rw-r-xr-x 1 root    root     11K Sep 15 15:04 retrying-1.3.3.tar.gz
-rw-r----- 1 root    root     11K Sep 15 15:04 six-1.11.0-py2.py3-none-any.whl

• Python-2.7.6版