  We present ir-measures, a new tool that makes it convenient to calculate a
diverse set of evaluation measures used in information retrieval. Rather than
implementing its own measure calculations, ir-measures provides a common
interface to a handful of evaluation tools. The necessary tools are
automatically invoked (potentially multiple times) to calculate all the desired
metrics, simplifying the evaluation process for the user. The tool also makes
it easier for researchers to use recently-proposed measures (such as those from
the C/W/L framework) alongside traditional measures, potentially encouraging
their adoption.
