I have packaged opencolor 2.1.2 and built it successfully in a PPA. https://launchpad.net/~jawn-smith/+archive/ubuntu/devel-proposed/+packages
In order to fix the docs built I had to override the PYTHONPATH variable manually rather than relying on the cmake module. This had to do with how the quotation marks were being added around "PYTHONPATH=..." causing the builder to try to execute a file named PYTHONPATH=... rather than setting it as an environment variable. To resolve the imath conflict, I used the flag `-DOCIO_USE_OPENEXR_HALF=ON` in override_dh_auto_configure. I also had to add a patch to import cstrings. Please let me know if any changes are needed to this packaging to get this package uploaded. Thank you, William
