Python 3.5 Issue

[nikolay]

Suddenly, I get this error when trying to install Python 3.5 (started to happen with the latest version) on OS X 10.11:

Last 10 log lines:
  File "/private/var/folders/cb/cxxqz_g94jd1x5tjwrklxgd00000gn/T/python-build.20151008192643.16552/Python-3.5.0/Lib/ensurepip/__main__.py", line 4, in <module>
    ensurepip._main()
  File "/private/var/folders/cb/cxxqz_g94jd1x5tjwrklxgd00000gn/T/python-build.20151008192643.16552/Python-3.5.0/Lib/ensurepip/__init__.py", line 209, in _main
    default_pip=args.default_pip,
  File "/private/var/folders/cb/cxxqz_g94jd1x5tjwrklxgd00000gn/T/python-build.20151008192643.16552/Python-3.5.0/Lib/ensurepip/__init__.py", line 116, in bootstrap
    _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
  File "/private/var/folders/cb/cxxqz_g94jd1x5tjwrklxgd00000gn/T/python-build.20151008192643.16552/Python-3.5.0/Lib/ensurepip/__init__.py", line 40, in _run_pip
    import pip
zipimport.ZipImportError: can't decompress data; zlib not available
make: *** [install] Error 1
pyenv: version `3.5.0' is not installed

[yyuu]

You just don't have zlib.

[thomasjo]

@nikolay Ensure that your Xcode (including Command Line Tools) is up to date. Latest version is v7.0.1.

[nikolay]

I do have both, of course. zlib is installed via Homebrew and I have Xcode 7.1 beta and I haven't updated it since it worked last time, i.e. it's not the beta version of Xcode.

[thomasjo]

Well, something is wrong with your environment, because it works perfectly fine on my (clean) OS X 10.11 (15A284) system with Xcode 7.0.1 (7A1001).

[karamosky]

Same issue for me too, 3.4.x build correctly but not 3.5, Xcode is up to date

[nikolay]

Well, I'm not sure what's wrong with my environment if 3.4.3 builds and 3.5.0 doesn't.

[yyuu]

Hmm, sounds interesting.

For more investigation, could you create a gist from output of 'pyenv install -v 3.5'?

[karamosky]

https://gist.github.com/karamosky/9e3fcf22b2f84e2e9466

[swarajban]

@nikolay I had the same issue, and was able to fix by updating command line tools on OSX. Just run xcode-select --install

Once, that's finished, you should be able to install 3.5.0

[nikolay]

@swarajban I've done this, of course. It's not that. It does not work. I tried once more. Same exact issue. 3.4.3 works, 3.5.0 fails miserably.

[yyuu]

Umm. I've finished upgrading to El Capitan, but I couldn't reproduce the build failure of 3.5.0 on it....

[VirtualWolf]

I was having the same problem. The fix for me, despite already having Xcode installed and up-to-date (7.1), was running xcode-select --install and installing the command line tools.

[qtfkwk]

I also had this issue but it's fixed now via xcode-select --install... I have XCode 7.1... Homebrew, etc, are working fine otherwise... no complaints about xcode-select, libraries missing, etc before trying to install Python 3.5.0. I will try to remember to run xcode-select --install from now on after upgrading XCode. Here's a copy of my session:

$ pyenv install 3.5.0
Downloading Python-3.5.0.tgz...
-> https://yyuu.github.io/pythons/584e3d5a02692ca52fce505e68ecd77248a6f2c99adf9db144a39087336b0fe0
Installing Python-3.5.0...

BUILD FAILED (OS X 10.11.1 using python-build 20150818)

Inspect or clean up the working tree at /var/folders/t2/60dlskjn6hq8r4wbmnmp0_nm0000gn/T/python-build.20151028190759.49730
Results logged to /var/folders/t2/60dlskjn6hq8r4wbmnmp0_nm0000gn/T/python-build.20151028190759.49730.log

Last 10 log lines:
  File "/private/var/folders/t2/60dlskjn6hq8r4wbmnmp0_nm0000gn/T/python-build.20151028190759.49730/Python-3.5.0/Lib/ensurepip/__main__.py", line 4, in <module>
    ensurepip._main()
  File "/private/var/folders/t2/60dlskjn6hq8r4wbmnmp0_nm0000gn/T/python-build.20151028190759.49730/Python-3.5.0/Lib/ensurepip/__init__.py", line 209, in _main
    default_pip=args.default_pip,
  File "/private/var/folders/t2/60dlskjn6hq8r4wbmnmp0_nm0000gn/T/python-build.20151028190759.49730/Python-3.5.0/Lib/ensurepip/__init__.py", line 116, in bootstrap
    _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
  File "/private/var/folders/t2/60dlskjn6hq8r4wbmnmp0_nm0000gn/T/python-build.20151028190759.49730/Python-3.5.0/Lib/ensurepip/__init__.py", line 40, in _run_pip
    import pip
zipimport.ZipImportError: can't decompress data; zlib not available
make: *** [install] Error 1
$ xcode-select --install # clicked install button
xcode-select: note: install requested for command line developer tools
$ xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
$ pyenv install 3.5.0
Downloading Python-3.5.0.tgz...
-> https://yyuu.github.io/pythons/584e3d5a02692ca52fce505e68ecd77248a6f2c99adf9db144a39087336b0fe0
Installing Python-3.5.0...
Installed Python-3.5.0 to /Users/nick/.pyenv/versions/3.5.0

[yyuu]

Run xcode-select --install to fix installation of Command Line Tools for Xcode working.