Microsoft SQL Server support

Hi everyone,
I use Microsoft SQL Server with Django and I have some geometry fields on which I would like to perform very basic queries (contains, intersects and maybe nearest neighbor if it is possible but it would be the most complicated query).
But I found out that it is not supported by geodjango, hence I am here: do you think it requires a lot of work to contribute to geodjango to make it compatible with the very basics of MSSQL ? Or even better, has someone a trick that would do the job ? I could’nt find anything about it.
Thanks everyone !