issues with pyenv installs

I have seen this issue when trying to install Python 3.6.2 and 3.6.5 on MacOS Mojave

python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-3.6.2.tar.xz...
-> https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
Installing Python-3.6.2...
python-build: use readline from homebrew
BUILD FAILED (OS X 10.14.2 using python-build 20180424)
Inspect or clean up the working tree at /var/folders/6l/6_rvlhpx6k3f60s8lqrt1m9mtcsb3f/T/python-build.20190930121621.8234
Results logged to /var/folders/6l/6_rvlhpx6k3f60s8lqrt1m9mtcsb3f/T/python-build.20190930121621.8234.log
Last 10 log lines:
File "/private/var/folders/6l/6_rvlhpx6k3f60s8lqrt1m9mtcsb3f/T/python-build.20190930121621.8234/Python-3.6.2/Lib/ensurepip/__main__.py", line 4, in <module>
ensurepip._main()
File "/private/var/folders/6l/6_rvlhpx6k3f60s8lqrt1m9mtcsb3f/T/python-build.20190930121621.8234/Python-3.6.2/Lib/ensurepip/__init__.py", line 189, in _main
default_pip=args.default_pip,
File "/private/var/folders/6l/6_rvlhpx6k3f60s8lqrt1m9mtcsb3f/T/python-build.20190930121621.8234/Python-3.6.2/Lib/ensurepip/__init__.py", line 102, in bootstrap
_run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
File "/private/var/folders/6l/6_rvlhpx6k3f60s8lqrt1m9mtcsb3f/T/python-build.20190930121621.8234/Python-3.6.2/Lib/ensurepip/__init__.py", line 27, in _run_pip
import pip
zipimport.ZipImportError: can't decompress data; zlib not available
make: *** [install] Error 1

Right after I updated to Mojave, I made sure xcode was installed:

xcode-select --install

You’ll see a message that

xcode-select: note: install requested for command line developer tools

and a popup will appear on screen to ask you to install xcode, click to install.

Then you should navigate to following folder (Cmd + Shift + G)

/Library/Developer/CommandLineTools/

to see that Packages folder existing with following:

macOS_SDK_headers_for_macOS_10.14.pkg

Previously, I had only seen usr folder.

Now run:

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

If you try install pyenv version again, it should work!