FAQ

Frequently Asked Questions

1. Is hklpy2 ophyd v1 only, or can it be used with with ophyd async?

   hklpy2 is ophyd v1 (sync, not async) only

2. Is there a way to use it in some kind of simulation mode?

   Simulators are easy to create for any defined solver and geometry. This notebook demonstrates an example of a 4-circle diffractometer that might be used at a synchrotron beam line.

3. import gi raises an ImportError exception when starting in the bluesky queueserver.

   Tracked this problem to a situation (on linux 64-bit OS). Either of these approaches were able to work around this problem until it is resolved upstream:

   1. Set an environment variable when starting the queue-server:

      LD_LIBRARY_PATH=${CONDA_PREFIX}/lib start-re-manager <options>
      

   2. Configure the conda environment to set this on activation:

      conda env config vars set LD_LIBRARY_PATH="${CONDA_PREFIX}/lib"