pyenv installでコケる(zlib)

pyenvでpythonのバージョンを上げたい

$ pyenv install 3.x.x   // ここで止まる
$ pyenv global 3.x.x

エラー

$ pyenv install 3.x.x
python-build: use openssl from homebrew
python-build: use readline from homebrew

<...>

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

Inspect or clean up the working tree at /var/folders/82/wbj2z1dx1px5tgqszjg3fdt80000gn/T/python-build.20190417125321.77862
Results logged to /var/folders/82/wbj2z1dx1px5tgqszjg3fdt80000gn/T/python-build.20190417125321.77862.log

Last 10 log lines:
  File "/private/var/folders/82/wbj2z1dx1px5tgqszjg3fdt80000gn/T/python-build.20190417125321.77862/Python-3.5.1/Lib/ensurepip/__main__.py", line 4, in <module>
    ensurepip._main()
  File "/private/var/folders/82/wbj2z1dx1px5tgqszjg3fdt80000gn/T/python-build.20190417125321.77862/Python-3.5.1/Lib/ensurepip/__init__.py", line 209, in _main
    default_pip=args.default_pip,
  File "/private/var/folders/82/wbj2z1dx1px5tgqszjg3fdt80000gn/T/python-build.20190417125321.77862/Python-3.5.1/Lib/ensurepip/__init__.py", line 116, in bootstrap
    _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
  File "/private/var/folders/82/wbj2z1dx1px5tgqszjg3fdt80000gn/T/python-build.20190417125321.77862/Python-3.5.1/Lib/ensurepip/__init__.py", line 40, in _run_pip
    import pip
zipimport.ZipImportError: can't decompress data; zlib not available   👈 zlibを入れればええんか？
make: *** [install] Error 1

これで解決しました

$ brew install zlib
$ brew install sqlite
$ export LDFLAGS="${LDFLAGS} -L/usr/local/opt/zlib/lib"
$ export CPPFLAGS="${CPPFLAGS} -I/usr/local/opt/zlib/include"
$ export LDFLAGS="${LDFLAGS} -L/usr/local/opt/sqlite/lib"
$ export CPPFLAGS="${CPPFLAGS} -I/usr/local/opt/sqlite/include"
$ export PKG_CONFIG_PATH="${PKG_CONFIG_PATH} /usr/local/opt/zlib/lib/pkgconfig"
$ export PKG_CONFIG_PATH="${PKG_CONFIG_PATH} /usr/local/opt/sqlite/lib/pkgconfig"
$ pyenv install 3.6.8

参考： https://github.com/jiansoung/issues-list/issues/13#issuecomment-470275744

他に試したこと

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

-> 同様にfailed

$ brew install zlib

-> zlibだけ入れても意味がなかった