Fail to import pyopenxr in Ubuntu 20.04

[cambel]

Hi,

I get the following error when importing this library python3 -c "import xr"

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/osx/.local/lib/python3.8/site-packages/xr/__init__.py", line 6, in <module>
    from . import (
  File "/home/osx/.local/lib/python3.8/site-packages/xr/functions.py", line 11, in <module>
    from . import raw_functions
  File "/home/osx/.local/lib/python3.8/site-packages/xr/raw_functions.py", line 12, in <module>
    from .library import openxr_loader_library
  File "/home/osx/.local/lib/python3.8/site-packages/xr/library/__init__.py", line 13, in <module>
    openxr_loader_library = ctypes.cdll.LoadLibrary(library_path)
  File "/usr/lib/python3.8/ctypes/__init__.py", line 451, in LoadLibrary
    return self._dlltype(name)
  File "/usr/lib/python3.8/ctypes/__init__.py", line 373, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by /home/osx/.local/lib/python3.8/site-packages/xr/library/libopenxr_loader.so)

Is it not possible to use on Ubuntu 20.04 which has GLIBC version 2.31?

[cmbruns]

I probably built the libraries on Ubuntu 22 last time, when I should have used my Ubuntu 18 VM, for better backward compatibility.

I just now made a new release that will probably work better on Ubuntu 20. I also added Ubuntu 20.04 to the continuous integration test matrix, so that should hopefully catch problems like this in the future.

@cambel could you please try the latest release and report back whether you get any further?

[cambel]

@cmbruns Thank you, now I can import the library. However I am stuck with the error "The loader was unable to find or load a runtime."

I have SteamVR server running and I can connect using pyOpenVR but with pyOpenXR it does not connect. Is there some configuration that I need to do before running pyOpenXR?

Error [GENERAL |  | OpenXR-Loader] : RuntimeManifestFile::FindManifestFiles - failed to determine active runtime file path for this environment
Error [GENERAL | xrCreateInstance | OpenXR-Loader] : RuntimeInterface::LoadRuntimes - unknown error
Error [GENERAL | xrCreateInstance | OpenXR-Loader] : RuntimeInterface::LoadRuntimes - failed to load a runtime
Error [GENERAL | xrCreateInstance | OpenXR-Loader] : Failed loading runtime information
Error [GENERAL | xrCreateInstance | OpenXR-Loader] : xrCreateInstance failed
Traceback (most recent call last):
  File "openxr_test.py", line 4, in <module>
    instance = xr.create_instance(create_info=xr.InstanceCreateInfo())
  File "/usr/local/lib/python3.8/dist-packages/xr/functions.py", line 102, in create_instance
    raise result
xr.exception.RuntimeUnavailableError: The loader was unable to find or load a runtime.

[cmbruns]

If you run SteamVR and select the menu at the upper left, go to Settings, then OpenXR. Does it say the current OpenXR runtime is SteamVR?