Remove the orphan instance for `FromJSON ByteString` and `ToJSON ByteString`

[expipiplus1]

These would be pretty surprising to bump into!

[expipiplus1]

I can't seem to figure out what all the JSON machinery is doing in dbrecord, is it possible to spread some light on this?

[mageshb]

Expr scope a is typed representation of underlying db expression Ast PrimExpr
Scope helps to refer to a column in type safe manner like

Consider for example,

type User a = Expr '[ "id" ::: Int
                    , "name" ::: Text
                    , "email" ::: Text
                    , "role" ::: UserRole
                    ] a

col @"name" .== "foobar" :: User Bool
-- or using OverloadedLabel, same thing could be written as
#name .== "foobar" :: User Bool

JSON (de-)serialiazation is exprimental attempt btw.
Idea behind (de-)serialiazation instances for Expr type are

we can get the db expression as raw string (probably as rest api param)
For Eg.
name=="foobar" will successfully parse as User Bool
but, id=="foobar" will not parse as User Bool as id column is of type Int

Regarding JSON ByteString instance, I agree it is problematic to keep such opinionated orphan instance in the library. I will probably replace it with the newtype wrapped definition.

[expipiplus1]

Ok, so the intention was to allow users to write complex queries in a http query.

dbrecord does seem to have quite a wide scope!

Thanks for explaining.