Issue installing on macOS Sierra

[foresmac]

I use a Homebrew-installed version of Python (2.7.13) on macOS Sierra (10.12.6) symlinked to /usr/local/bin/python. This avoids having to turn off the system integrity protection for recent macOS versions, since everything gets installed in /usr/local/bin. Generally, I can pip install packages I want available to use in Python whenever I'm not in a particular virtualenv, such as requests, etc.

However, I was unable to install twine because some dependency wants to write to /usr/local/man. Is there a known workaround without disabling SIP or using sudo?

See bash output and pip stack trace below:

~ > pip install twine
Collecting twine
  Downloading twine-1.9.1-py2.py3-none-any.whl
Requirement already satisfied: setuptools>=0.7.0 in /usr/local/lib/python2.7/site-packages (from twine)
Collecting requests-toolbelt>=0.8.0 (from twine)
  Downloading requests_toolbelt-0.8.0-py2.py3-none-any.whl (54kB)
    100% |████████████████████████████████| 61kB 5.3MB/s 
Collecting pkginfo>=1.0 (from twine)
  Downloading pkginfo-1.4.1-py2.py3-none-any.whl
Collecting tqdm>=4.11 (from twine)
  Downloading tqdm-4.19.4-py2.py3-none-any.whl (50kB)
    100% |████████████████████████████████| 51kB 3.6MB/s 
Requirement already satisfied: requests!=2.15,!=2.16,>=2.5.0 in /usr/local/lib/python2.7/site-packages (from twine)
Requirement already satisfied: certifi>=2017.4.17 in /usr/local/lib/python2.7/site-packages (from requests!=2.15,!=2.16,>=2.5.0->twine)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in /usr/local/lib/python2.7/site-packages (from requests!=2.15,!=2.16,>=2.5.0->twine)
Requirement already satisfied: idna<2.7,>=2.5 in /usr/local/lib/python2.7/site-packages (from requests!=2.15,!=2.16,>=2.5.0->twine)
Requirement already satisfied: urllib3<1.23,>=1.21.1 in /usr/local/lib/python2.7/site-packages (from requests!=2.15,!=2.16,>=2.5.0->twine)
Installing collected packages: requests-toolbelt, pkginfo, tqdm, twine
Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.7/site-packages/pip/commands/install.py", line 342, in run
    prefix=options.prefix_path,
  File "/usr/local/lib/python2.7/site-packages/pip/req/req_set.py", line 784, in install
    **kwargs
  File "/usr/local/lib/python2.7/site-packages/pip/req/req_install.py", line 851, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/usr/local/lib/python2.7/site-packages/pip/req/req_install.py", line 1064, in move_wheel_files
    isolated=self.isolated,
  File "/usr/local/lib/python2.7/site-packages/pip/wheel.py", line 377, in move_wheel_files
    clobber(source, dest, False, fixer=fixer, filter=filter)
  File "/usr/local/lib/python2.7/site-packages/pip/wheel.py", line 316, in clobber
    ensure_dir(destdir)
  File "/usr/local/lib/python2.7/site-packages/pip/utils/__init__.py", line 83, in ensure_dir
    os.makedirs(path)
  File "/usr/local/Cellar/python/2.7.13_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 150, in makedirs
    makedirs(head, mode)
  File "/usr/local/Cellar/python/2.7.13_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 157, in makedirs
    mkdir(name, mode)
OSError: [Errno 13] Permission denied: '/usr/local/man'

[jamadden]

I'm going to guess the offending dependency is tqdm.

I believe a workaround would be to install in a virtualenv instead of system-wide. I just installed a tqdm update this morning in a virtualenv as a regular user on OS X 10.13 with no issues, and sure enough, there's a $VIRTUAL_ENV/man/man1/tqdm.1 file.

[foresmac]

Hrmmm, looks like all that was needed was for the directory to exist. So I did sudo mkdir /usr/local/man and then pip install twine and it worked.

Thanks for the suggestion, @jamadden, but it would be useful for twine to be available system-wide so I can use it to push updates without having to have a venv's pip freeze full of unnecessary packages.

[foresmac]

I'll just leave a note here for macOS users running with SIP (system integrity protection) enabled (the default), and rightly using homebrew or other non-system Python (smart!), create the /usr/local/man` directory manually before pin-installing twine.