Different INSTALL-directory structure for different installation methods

[Wile_E_Coyote]

Python in ROOT 6.22

Well, this is a kind of follow-up on the recent “Python3 and ROOT 6.23/01” thread … This is Ubuntu 20.04 LTS / x86_64 with gcc 9.3.0 and the standard operating system provided python2 2.7.18rc1 and python3 3.8.2 (plus the corresponding numpy versions). I tried your nightly “root_v6.22.99.Linux-ubuntu20-x86_64-gcc9.3” dated “2020 June 11 23:10 UTC” … root-config --python-version shows only 3.8.2. I think it should return a string with both python versions. root-config --config shows only two…