Switch to manual Supervisor child specifications instead of Supervisor.Spec

Supervisor.Spec is deprecated and causes warnings on Elixir master, see
https://hexdocs.pm/elixir/Supervisor.Spec.html

lib/pleroma/application.ex

@@ -4,7 +4,6 @@
 
 defmodule Pleroma.Application do
   use Application
-  import Supervisor.Spec
 
   @name Mix.Project.config()[:name]
   @version Mix.Project.config()[:version]
@@ -31,21 +30,25 @@ defmodule Pleroma.Application do
     children =
       [
         # Start the Ecto repository
-        supervisor(Pleroma.Repo, []),
+        %{id: Pleroma.Repo, start: {Pleroma.Repo, :start_link, []}, type: :supervisor},
-        worker(Pleroma.Emoji, []),
+        %{id: Pleroma.Emoji, start: {Pleroma.Emoji, :start_link, []}},
-        worker(Pleroma.Captcha, []),
+        %{id: Pleroma.Captcha, start: {Pleroma.Captcha, :start_link, []}},
-        worker(
+        %{
-          Cachex,
+          id: :cachex_used_captcha_cache,
+          start:
+            {Cachex, :start_link,
              [
                :used_captcha_cache,
                [
-              ttl_interval: :timer.seconds(Pleroma.Config.get!([Pleroma.Captcha, :seconds_valid]))
+                 ttl_interval:
+                   :timer.seconds(Pleroma.Config.get!([Pleroma.Captcha, :seconds_valid]))
                ]
-          ],
+             ]}
-          id: :cachex_used_captcha_cache
+        },
-        ),
+        %{
-        worker(
+          id: :cachex_user,
-          Cachex,
+          start:
+            {Cachex, :start_link,
              [
                :user_cache,
                [
@@ -53,11 +56,12 @@ defmodule Pleroma.Application do
                  ttl_interval: 1000,
                  limit: 2500
                ]
-          ],
+             ]}
-          id: :cachex_user
+        },
-        ),
+        %{
-        worker(
+          id: :cachex_object,
-          Cachex,
+          start:
+            {Cachex, :start_link,
              [
                :object_cache,
                [
@@ -65,32 +69,35 @@ defmodule Pleroma.Application do
                  ttl_interval: 1000,
                  limit: 2500
                ]
-          ],
+             ]}
-          id: :cachex_object
+        },
-        ),
+        %{
-        worker(
+          id: :cachex_rich_media,
-          Cachex,
+          start:
+            {Cachex, :start_link,
              [
                :rich_media_cache,
                [
                  default_ttl: :timer.minutes(120),
                  limit: 5000
                ]
-          ],
+             ]}
-          id: :cachex_rich_media
+        },
-        ),
+        %{
-        worker(
+          id: :cachex_scrubber,
-          Cachex,
+          start:
+            {Cachex, :start_link,
              [
                :scrubber_cache,
                [
                  limit: 2500
                ]
-          ],
+             ]}
-          id: :cachex_scrubber
+        },
-        ),
+        %{
-        worker(
+          id: :cachex_idem,
-          Cachex,
+          start:
+            {Cachex, :start_link,
              [
                :idempotency_cache,
                [
@@ -101,26 +108,49 @@ defmodule Pleroma.Application do
                    ),
                  limit: 2500
                ]
-          ],
+             ]}
-          id: :cachex_idem
+        },
-        ),
+        %{id: Pleroma.FlakeId, start: {Pleroma.FlakeId, :start_link, []}},
-        worker(Pleroma.FlakeId, []),
+        %{
-        worker(Pleroma.ScheduledActivityWorker, [])
+          id: Pleroma.ScheduledActivityWorker,
+          start: {Pleroma.ScheduledActivityWorker, :start_link, []}
+        }
       ] ++
         hackney_pool_children() ++
         [
-          worker(Pleroma.Web.Federator.RetryQueue, []),
+          %{
-          worker(Pleroma.Web.OAuth.Token.CleanWorker, []),
+            id: Pleroma.Web.Federator.RetryQueue,
-          worker(Pleroma.Stats, []),
+            start: {Pleroma.Web.Federator.RetryQueue, :start_link, []}
-          worker(Task, [&Pleroma.Web.Push.init/0], restart: :temporary, id: :web_push_init),
+          },
-          worker(Task, [&Pleroma.Web.Federator.init/0], restart: :temporary, id: :federator_init)
+          %{
+            id: Pleroma.Web.OAuth.Token.CleanWorker,
+            start: {Pleroma.Web.OAuth.Token.CleanWorker, :start_link, []}
+          },
+          %{
+            id: Pleroma.Stats,
+            start: {Pleroma.Stats, :start_link, []}
+          },
+          %{
+            id: :web_push_init,
+            start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
+            restart: :temporary
+          },
+          %{
+            id: :federator_init,
+            start: {Task, :start_link, [&Pleroma.Web.Federator.init/0]},
+            restart: :temporary
+          }
         ] ++
         streamer_child() ++
         chat_child() ++
         [
           # Start the endpoint when the application starts
-          supervisor(Pleroma.Web.Endpoint, []),
+          %{
-          worker(Pleroma.Gopher.Server, [])
+            id: Pleroma.Web.Endpoint,
+            start: {Pleroma.Web.Endpoint, :start_link, []},
+            type: :supervisor
+          },
+          %{id: Pleroma.Gopher.Server, start: {Pleroma.Gopher.Server, :start_link, []}}
         ]
 
     # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
@@ -169,12 +199,17 @@ defmodule Pleroma.Application do
     defp chat_child, do: []
   else
     defp streamer_child do
-      [worker(Pleroma.Web.Streamer, [])]
+      [%{id: Pleroma.Web.Streamer, start: {Pleroma.Web.Streamer, :start_link, []}}]
     end
 
     defp chat_child do
       if Pleroma.Config.get([:chat, :enabled]) do
-        [worker(Pleroma.Web.ChatChannel.ChatChannelState, [])]
+        [
+          %{
+            id: Pleroma.Web.ChatChannel.ChatChannelState,
+            start: {Pleroma.Web.ChatChannel.ChatChannelState, :start_link, []}
+          }
+        ]
       else
         []
       end