My current relevent versions:

      {:ecto, "3.13.0"},

      {:ecto_sql, "\~> 3.10"},

      {:postgrex, ">= 0.0.0"},

      {:geo, "\~> 4.0.0"},

      {:geo_postgis, "\~>  3.7.1"},

Already defined custom types:

Postgrex.Types.define(
  MyApp.PostgresTypes,
  [Geo.PostGIS.Extension] ++ Ecto.Adapters.Postgres.extensions(),
json: Jason)

Setup on the Repo Config:

  # Configure your local dev database
config :my_app, MyApp.Repo,
  username: "postgres",
  password: "password",
  hostname: "localhost",
  database: "dev",
  stacktrace: true,
  show_sensitive_data_on_connection_error: true,
  pool_size: 10,
  adapter: Ecto.Adapters.Postgres,
  types: MyApp.PostgresTypes

I keep getting this error:

 GenServer {Postgrex.TypeManager, {Geo.PostGIS.Types, {~c"localhost", 5432, "dev"}}} terminating
** (UndefinedFunctionError) function Geo.PostGIS.Types.find/2 is undefined (module Geo.PostGIS.Types is not available)

Only workaround has been to use raw SQL.