Nick
Thanks for posting. Your suggestion to edit requirements.txt worked perfectly for me on LM19.2!
First a quick look at pip3 version....
den@den-ThinkPad-T520 ~/nanovna-saver $ pip3 -V
pip 19.3.1 from /usr/local/lib/python3.6/dist-packages/pip (python 3.6)
Then edited requirements.txt as per Nick's posting and issued the following command.....
den@den-ThinkPad-T520 ~/nanovna-saver $ python3.7 -m pip install -r ./requirements.txt
Collecting scipy (from -r ./requirements.txt (line 1))
Downloading (26.1MB)
100% |¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨| 26.1MB 50kB/s
Collecting pyqt5==5.13.2 (from -r ./requirements.txt (line 2))
Downloading (62.2MB)
100% |¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨| 62.2MB 23kB/s
Collecting pyserial (from -r ./requirements.txt (line 3))
Downloading (193kB)
100% |¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨| 194kB 4.6MB/s
Collecting numpy (from -r ./requirements.txt (line 4))
Downloading (20.1MB)
100% |¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨| 20.1MB 43kB/s
Collecting PyQt5_sip<13,>=4.19.19 (from pyqt5==5.13.2->-r ./requirements.txt (line 2))
Downloading (261kB)
100% |¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨| 266kB 1.3MB/s
Installing collected packages: numpy, scipy, PyQt5-sip, pyqt5, pyserial
Successfully installed PyQt5-sip-12.7.0 numpy-1.18.1 pyqt5-5.13.2 pyserial-3.4 scipy-1.4.1
den@den-ThinkPad-T520 ~/nanovna-saver $ python3.7 nanovna-saver.py
NanoVNASaver 0.2.2
Copyright (C) 2019 Rune B. Broberg
This program comes with ABSOLUTELY NO WARRANTY
This program is licensed under the GNU General Public License version 3
See for further details
Settings: /home/den/.config/NanoVNASaver/NanoVNASaver.ini
