Incorrect Linux version regex [linux version not found (virtual package skipped)]

[kelszo]

The regex on line 301 in libmamba/src/core/util_os.cpp is incorrect for detecting Linux versions.

The current regex is ([0-9]+\.[0-9]+\.[0-9]+)-.* and expects the Linux kernel version to end with -kernel-flavour. Ex. 5.15.59-27-generic. Not all kernel versions end with a flavour tag however. On NixOS the kernel versions are simply 5.15.59, meaning the current regex fails matching. This leads to the linux version not found (virtual package skipped) warning on certain distros.

A fix would be using a regex such as ([0-9]+\.[0-9]+\.[0-9]+)(?:-.*)? or ^([0-9]+\.[0-9]+\.[0-9]+)(?:-.*)?$.

Outputs

$ uname -a
Linux pc 5.15.59 #1-NixOS SMP Wed Aug 3 10:03:56 UTC 2022 x86_64 GNU/Linux

$ uname -r
5.15.59

$ micromamba --version
0.24.0

[wolfv]

A PR would be very welcome!

[kelszo]

Sure! Will have a PR ready later today

[wolfv]

regex seems to work according to regex101.com :)

[wholtz]

Micromamba-docker isssue 227 seems to indicate the updated regex is still failing to match on some linux distributions.

[wolfv]

I just ran our regex over the uname and it seems fine. Weird.

[wholtz]

Yeah, I jumped the gun on the regex. I tried it in https://regex101.com/ but forget to remove the \ escaping, so it looked like it was failing on regex.

[wholtz]

The call to uname -r is failing. This is within a ubuntu:bionic image... but I haven't been able to reproduce it.

[wolfv]

interesting, thanks for helping out with the debugging!