PyEnv BUILD FAILED installing Python on MacOS

Question

While trying to install Python 3.6.6 (for Airflow) using PyEnv on MacOS, I am encountering build failure

Answer 1

short answer:

$ brew upgrade

now you can try to install python through pyenv

$ pyenv install 3.7.4

then, you have to set the python path

pyenv global 3.7.4

now, close and open a new terminal and write the command

echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n  eval "$(pyenv init -)"\nfi' >> ~/.bash_profile

That's all. For me it was fine.

Answer 2

I was able to get away with above error by referring to Common build problems

• brew install readline xz
• xcode-select --install
• brew install openssl

---

After this, I installed and initialized pyenv

• brew install pyenv
• pyenv init (inside your project directory)

---

Finally install and activate required python version

• pyenv install 3.6.6
• pyenv local 3.6.6 (inside your project directory)

---

Here's the link to original thread #1188 on GitHub by @Harry Moreno

Answer 3

The only way I could get it working is through the below prefixes before installing

CFLAGS="-I$(brew --prefix readline)/include -I$(brew --prefix openssl)/include 
-I$(xcrun --show-sdk-path)/usr/include" \
LDFLAGS="-L$(brew --prefix readline)/lib -L$(brew --prefix openssl)/lib" \
PYTHON_CONFIGURE_OPTS=--enable-unicode=ucs2 \
pyenv install -v 3.7.1

Answer 4

BUILD FAILED (OS X 10.14.3 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/kt/79hj2dxs5vg7gsy188n6tk9c0000gn/T/python-build.20190226112205.71745
Results logged to /var/folders/kt/79hj2dxs5vg7gsy188n6tk9c0000gn/T/python-build.20190226112205.71745.log

Last 10 log lines:
  File "/private/var/folders/kt/79hj2dxs5vg7gsy188n6tk9c0000gn/T/python-build.20190226112205.71745/Python-3.6.6/Lib/ensurepip/__main__.py", line 5, in <module>
    sys.exit(ensurepip._main())
  File "/private/var/folders/kt/79hj2dxs5vg7gsy188n6tk9c0000gn/T/python-build.20190226112205.71745/Python-3.6.6/Lib/ensurepip/__init__.py", line 204, in _main
    default_pip=args.default_pip,
  File "/private/var/folders/kt/79hj2dxs5vg7gsy188n6tk9c0000gn/T/python-build.20190226112205.71745/Python-3.6.6/Lib/ensurepip/__init__.py", line 117, in _bootstrap
    return _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
  File "/private/var/folders/kt/79hj2dxs5vg7gsy188n6tk9c0000gn/T/python-build.20190226112205.71745/Python-3.6.6/Lib/ensurepip/__init__.py", line 27, in _run_pip
    import pip._internal

I found the solution from http://digidememory.blogspot.com/2019/01/macos-mojave-10142python371.html

In my case, I solved by this command

sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /

Answer 5

The accepted answer didn't work for me (Mojave) but this did:

sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /

Credit to http://www.blog.howechen.com/macos-mojave-pyenv-install-multi-version-build-failed-solution/

Answer 6

I had this problem with Mojave and Python 3.7.3.

This worked for me:

SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk MACOSX_DEPLOYMENT_TARGET=10.14 pyenv install 3.7.3