Camera geometry used to be defined using PAF (policy) files, which are now deprecated. As part of the transition to the refactored camera geometry scheme, scripts were introduced to convert from the PAF files to the new camera geometry configuration scheme which uses FITS files and a python file to describe the camera. These scripts are still part of the obs_* packages, and some people rely on them for making changes to the camera description. On the other hand, the generated FITS files and python file are also first-class members of the obs_* packages. This means that we have two sources of the same information, which is dangerous.

For obs_lsstSim, obs_decam, obs_cfht and obs_sdss, we want these scripts to be the primary source of information. This means we should delete the generated files, and create them at build time. We should also standardise the name of the script used to generate these.