optional ipv6 for repo (#1661)

* optional ipv6 for repo

* changelog

CHANGELOG.md

@@ -18,6 +18,7 @@ All notable changes to this project will be documented in this file.
 - If a session was started without a screen_size it is updated if an event with screen_size occurs
 - Added `LISTEN_IP` configuration parameter plausible/analytics#1189
 - The breakdown endpoint with the property query `property=event:goal` returns custom goal properties (within `props`)
+- Added IPv6 Ecto support (via the environment-variable `ECTO_IPV6`)
 
 ### Fixed
 - UI fix where multi-line text in pills would not be underlined properly on small screens.

config/runtime.exs

@@ -207,8 +207,12 @@ config :plausible, PlausibleWeb.Endpoint,
   http: [port: port, ip: listen_ip, transport_options: [max_connections: :infinity]],
   secret_key_base: secret_key_base
 
+maybe_ipv6 = if System.get_env("ECTO_IPV6"), do: [:inet6], else: []
+
 if is_nil(db_socket_dir) do
-  config :plausible, Plausible.Repo, url: db_url
+  config :plausible, Plausible.Repo,
+    url: db_url,
+    socket_options: maybe_ipv6
 else
   config :plausible, Plausible.Repo,
     socket_dir: db_socket_dir,