why doesn't dict key unify?

[majidaldo]

from kanren import eq, var
k = list(
eq( {var('k'):'v'}, {'k': 'v'}   )({})
)
v = list(
eq( {'k':var('v')}, {'k': 'v'}   )({})
)
k,v

([], [{~v: 'v'}])

[brandonwillard]

Can you create an issue in https://github.com/pythological/unification?