gistfile1.txt

[user1@example1.sec1 ~]$ pip3.6 search intreehooks
intreehooks (1.0)  - Load a PEP 517 backend from inside the source tree
  INSTALLED: 1.0 (latest)
[user1@example1.sec1 ~]$ sudo pip3.6 install flit
Looking in indexes: http://repo1.sec1.example.com/python36_packages/simple
Collecting flit
  Downloading http://repo1.sec1.example1.com/python36_packages/simple/flit/flit-1.0.tar.gz (87kB)
    100% |████████████████████████████████| 92kB 75.5MB/s
  Missing build time requirements in pyproject.toml for flit from http://repo1.sec1.example1.com/python36_packages/simple/flit/flit-1.0.tar.gz: 'setuptools' and 'wheel'.
  This version of pip does not implement PEP 517 so it cannot build a wheel without 'setuptools' and 'wheel'.
  Could not find a version that satisfies the requirement intreehooks (from versions: )
No matching distribution found for intreehooks