Geometry type seems to be silently cast to geography

[kanes115]

Hey, I have the following definitions:

# Model
  schema "places" do
    field :name, :binary
    field :location, Geo.PostGIS.Geometry
  end

  def changeset(struct \\ %__MODULE__{}, attrs) do
    struct
    |> cast(attrs, @fields)
    |> validate_required(@fields)
  end

My migration:

    create table("places") do
      add :name, :binary
      add :location, :geometry
    end

And I try to use it as follows:

    google_maps_srid = 3857
    location = %Geo.Point{coordinates: {50.091211805442974, 19.89650102357312}, srid: google_maps_srid}
    %{name: "name", location: location}
    |> Place.changeset()
    |> Repo.insert()

I get the following error:

(Postgrex.Error) ERROR 22023 (invalid_parameter_value) Only lon/lat coordinate systems are supported in geography.

And insert log:

21:54:17.882 [debug] QUERY ERROR db=38.5ms queue=4.3ms
     INSERT INTO "places" ("location","name") VALUES ($1,$2) RETURNING "id" [%Geo.Point{coordinates: {50.091211805442974, 19.89650102357312}, properties: %{}, srid: 3857}, "Some name"]

It looks like somewhere along the way the geometry type is treated as geography but I fail at understanding where. Any help would be appreciated.

[adampash]

I'm running into the same bug. @kanes115 did you have any luck figuring this out?