Error loading Python lib - Ubuntu meshtastic release error

[nikscave]

running Linux ubuntu 4.15.0-213-generic x86_64

followed instructions on ubuntu release page, error seen same as closed issue 447 (https://github.com/meshtastic/python/issues/447)

user@ubuntu:/home$ meshtastic [16496] Error loading Python lib '/tmp/_MEIcP97hv/libpython3.9.so.1.0': dlopen: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.35' not found (required by /tmp/_MEIcP97hv/libpython3.9.so.1.0)

If the app is standalone, what dependencies with python 3.9 exist and how can I fix this? any help much appreciated. thanks Nik

[garthvh]

That is a pretty old kernel, does a pip install work?

[nikscave]

no, more issues with pip install, bleak dependencies missing. Just a mess.

Hadn't realised I was old an older kernel, I'll look to upgrade, thanks

[nikscave]

seems to have resolved using:

sudo pip3 install --upgrade setuptools and a combination of sudo pip3 install meshtastic and/or (not sure which one actually worked in the end, as had to run a few times) sudo pip3 install -U meshtastic

[nikscave]

still no dice. Definitely a python thing. What I dont understand is the version showing following pip3 installation is

plex@ubuntu:~$ pip3 show meshtastic Name: meshtastic Version: 1.2.95 Summary: Python API & client shell for talking to Meshtastic devices Home-page: https://github.com/meshtastic/Meshtastic-python Author: Kevin Hester Author-email: kevinh@geeksville.com License: MIT Location: /usr/local/lib/python3.6/dist-packages Requires: dotmap, pexpect, protobuf, pygatt, pypubsub, pyqrcode, pyserial, pyyaml, tabulate, timeago Required-by:

which looks to be very old?

[garthvh]

That is super old

[ianmcorvidae]

It looks like 1.3 alpha 1 is the first version that dropped support for Python 3.6, which is likely why you have such an old version of this library installed (it looks like that's what version you're using, from the location shown in pip3 show). I don't really think this can be expected to work on such an old version of Python, unfortunately. Given your system is also throwing errors related to Python 3.9 simultaneously, there may be more issues with your python install as well.

[nikscave]

thanks, so the installer is building version dependencies based on what's installed? not what it needs? anyway to override that before I look to re-build the box ;-)

[ianmcorvidae]

Okay, I think I figured out what's up here. The standalone installer bundles python 3.9, but I think older ubuntu versions (including 20.04 that I'm on) don't have the right glibc for what it's building on more recent ubuntu. Separately, when using pip install, it's (understandably) only installing a version that's marked as compatible with the local python version (not the one in the installer), which in your case is 3.6, which is unsupported, so you're getting a very old version of the CLI that won't really work.

I'll try at some point to experiment a bit with getting something that works at least for 20.04, but the workaround other than updating/rebuilding your system is probably using a more recent python version, one way or another, whether that's by system packages, docker, or whatever else.