BUILD FAILED (OS X 10.15.4 using python-build 20180424)

getting the error

```
BUILD FAILED (OS X 10.15.4 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/3z/jdm_tbt56n97ch0_75f497880000gn/T/python-build.20200331123651.7278
Results logged to /var/folders/3z/jdm_tbt56n97ch0_75f497880000gn/T/python-build.20200331123651.7278.log

Last 10 log lines:
File "/private/var/folders/3z/jdm_tbt56n97ch0_75f497880000gn/T/python-build.20200331123651.7278/Python-3.7.2/Lib/ensurepip/__main__.py", line 5, in
sys.exit(ensurepip._main())
File "/private/var/folders/3z/jdm_tbt56n97ch0_75f497880000gn/T/python-build.20200331123651.7278/Python-3.7.2/Lib/ensurepip/__init__.py", line 204, in _main
default_pip=args.default_pip,
File "/private/var/folders/3z/jdm_tbt56n97ch0_75f497880000gn/T/python-build.20200331123651.7278/Python-3.7.2/Lib/ensurepip/__init__.py", line 117, in _bootstrap
return _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
File "/private/var/folders/3z/jdm_tbt56n97ch0_75f497880000gn/T/python-build.20200331123651.7278/Python-3.7.2/Lib/ensurepip/__init__.py", line 27, in _run_pip
import pip._internal
zipimport.ZipImportError: can't decompress data; zlib not available
make: *** [install] Error 1
Exiting due to failure
```

Start by reproducing the EB CLI installation on OS X 10.15.4 with python-build 20180424, then inspect the generated python-build log and the final ensurepip traceback shown in the issue. Done means the installation completes without the zlib-not-available error; the issue does not name a source file or test to target.

Written by the indexing model from the issue text.