Parameter units to vary over indices?

[Rob Coelli]

Hi everyone, 

I noticed in the source code for pyomo.core.base.units_container that there may be a plan to allow "units for the arguments in addition to the function itself". 
pyomo.core.base.units_container — Pyomo 6.7.1 documentation 
# TODO # * create a new pint unit definition file (and load from that file) # since the precision in pint seems insufficient for 1e-8 constraint tolerances # * Investigate when we can and cannot handle offset units and expand capabilities if possible # * Further investigate issues surrounding absolute and relative temperatures (delta units) # * Extend external function interface to support units for the arguments in addition to the function itself

In a project I'm currently working on we have units that vary for some parameters over their indices. I was wondering if there's plans to have the capability for units to vary over indices - and if not - whether there's any reason it wouldn't work. 

I want to be able to specify the units for a parameter in the same way you specify its values. 

Thanks!
Rob