User defined constraints can't refer to preassigned variables
We have a general provenance problem that occasionally bites us. The substituter eagerly destroys some information which is hard to recover.
Having said that, I don't know what extra constraints you could write that would usefully refer to preassigned variables.
A special code path to inject variables preassigned to constants could be done without too much difficulty be reaching back into the hvar preassignment config at param generation time
User defined constraints can't refer to preassigned variables We have a general provenance problem that occasionally bites us. The substituter eagerly destroys some information which is hard to recover. Having said that, I don't know what extra constraints you could write that would usefully refer to preassigned variables.
A special code path to inject variables preassigned to constants could be done without too much difficulty be reaching back into the hvar preassignment config at param generation time