Modifying the Id of a persistent entity to use serial4 instead of serial8

I have this:

fact
    Id Int32 sqltype=serial4

And that creates this:

CREATE TABLE public.fact (
    id integer NOT NULL
)

but not the sequence:

ALTER TABLE ONLY public.viewing_fact ALTER COLUMN id SET DEFAULT nextval('public.viewing_fact_id_seq'::regclass);

I guess only serial8 is supported in persistent after finding maySerial?

I think this is related to this comment of yours and that idea is blocked by #1321 maybe?

Info:

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Start in persistent-postgresql/Database/Persist/Postgresql.hs at the maySerial entry point linked in the issue, and compare the generated SQL for serial4 with the provided entity definition. Review the related discussion in issues #1037 and #1321. Done means serial4 produces the expected sequence and column default rather than only an integer column.