Error on install: No matching distribution found for wltp<1 (from co2mpas)

[srzlt]

I tried installing co2mpas both with and without root privileges with pip install co2mpas. both times the same issue occurred after the PyYAML package.

Collecting PyYAML Downloading PyYAML-5.3.1.tar.gz (269 kB) |████████████████████████████████| 269 kB 1.3 MB/s ERROR: Could not find a version that satisfies the requirement wltp<1 (from co2mpas) (from versions: 0.0.7a0, 0.0.8a0, 0.0.8a2, 0.0.9a1, 0.0.9a3, 0.0.9a4, 0.0.9a5, 0.1.0a0, 0.1.0a1, 0.1.0a2, 0.1.0a3, 0.1.1a0, 0.1.2a0) ERROR: No matching distribution found for wltp<1 (from co2mpas)