The hkl library is a framework for diffraction computation and diffractometer control, heavily used at the SOLEIL synchrotron. It supports various types of diffractometer geometry: Eulerian 4-circle, Eulerian 6-circle, kappa 4-circle, kappa 6-circle, and z-axis geometry. For each of these it provides several numerically computed modes, such as bisector and constant psi.

This package can be used by other packages using the GIRepository format to generate dynamic bindings.