The District Court ruled the city's prison gerrymandering unconstitutional, reasoning that the city could not count incarcerated people in city council districts as if they were city residents while not treating them as constituents when it came time to represent them. But the First Circuit Court of Appeals reversed the decision, allowing the City to continue using the Census' unadjusted redistricting data despite the prison miscount.
https://www.prisonersofthecensus.org/davidson/