Hi Michael,
Yes I tried installing numpy, but it is already there.
Further, I deleted the build directory and ran pybombs again, but still it cannot find numpy!
Did system reboot also.
Even orc 0.4 is there but installer cannot find it.
I got a fresh i9 CPU and GNU Radio doesn't install.
ubadmin@ub-exotic02:~$ sudo apt install python-numpy
[sudo] password for ubadmin:
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-numpy is already the newest version (1:1.13.3-2ubuntu1).
The following package was automatically installed and is no longer required:
libllvm7
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
ubadmin@ub-exotic02:~$ python
Python 2.7.15+ (default, Jul 9 2019, 16:51:35)
[GCC 7.4.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>>