Mucking with custom msgspec.Struct codecs

Syncs with goodboy/tractor#311
which is nowhere near ready and this approach didn't end up being
as straight forward as hoped. We're going to need a top level
`Msg`-boxing type/protocol in `tractor` first...

piker/_daemon.py

@@ -22,13 +22,13 @@
 from contextlib import asynccontextmanager as acm
 from collections import defaultdict
 
-from msgspec import Struct
 import tractor
 import trio
 from trio_typing import TaskStatus
 
 from .log import get_logger, get_console_log
 from .brokers import get_brokermod
+from .data.types import Struct
 
 
 log = get_logger(__name__)
@@ -204,23 +204,26 @@ async def open_piker_runtime(
     assert _services is None
 
     # XXX: this may open a root actor as well
-    async with (
-        tractor.open_root_actor(
+    with tractor.msg.configure_native_msgs(
+        [Struct],
+    ):
+        async with (
+            tractor.open_root_actor(
 
-            # passed through to ``open_root_actor``
-            arbiter_addr=_registry_addr,
-            name=name,
-            loglevel=loglevel,
-            debug_mode=debug_mode,
-            start_method=start_method,
+                # passed through to ``open_root_actor``
+                arbiter_addr=_registry_addr,
+                name=name,
+                loglevel=loglevel,
+                debug_mode=debug_mode,
+                start_method=start_method,
 
-            # TODO: eventually we should be able to avoid
-            # having the root have more then permissions to
-            # spawn other specialized daemons I think?
-            enable_modules=_root_modules,
-        ) as _,
-    ):
-        yield tractor.current_actor()
+                # TODO: eventually we should be able to avoid
+                # having the root have more then permissions to
+                # spawn other specialized daemons I think?
+                enable_modules=_root_modules,
+            ) as _,
+        ):
+            yield tractor.current_actor()
 
 
 @acm
@@ -260,27 +263,31 @@ async def maybe_open_pikerd(
     if loglevel:
         get_console_log(loglevel)
 
-    # subtle, we must have the runtime up here or portal lookup will fail
-    async with maybe_open_runtime(loglevel, **kwargs):
+    # XXX: this may open a root actor as well
+    with tractor.msg.configure_native_msgs(
+        [Struct],
+    ):
+        # subtle, we must have the runtime up here or portal lookup will fail
+        async with maybe_open_runtime(loglevel, **kwargs):
 
-        async with tractor.find_actor(_root_dname) as portal:
-            # assert portal is not None
-            if portal is not None:
-                yield portal
-                return
+            async with tractor.find_actor(_root_dname) as portal:
+                # assert portal is not None
+                if portal is not None:
+                    yield portal
+                    return
 
-    # presume pikerd role since no daemon could be found at
-    # configured address
-    async with open_pikerd(
+        # presume pikerd role since no daemon could be found at
+        # configured address
+        async with open_pikerd(
 
-        loglevel=loglevel,
-        debug_mode=kwargs.get('debug_mode', False),
+            loglevel=loglevel,
+            debug_mode=kwargs.get('debug_mode', False),
 
-    ) as _:
-        # in the case where we're starting up the
-        # tractor-piker runtime stack in **this** process
-        # we return no portal to self.
-        yield None
+        ) as _:
+            # in the case where we're starting up the
+            # tractor-piker runtime stack in **this** process
+            # we return no portal to self.
+            yield None
 
 
 # brokerd enabled modules
@@ -442,7 +449,7 @@ async def spawn_brokerd(
     )
 
     # non-blocking setup of brokerd service nursery
-    from .data import _setup_persistent_brokerd
+    from .data.feed import _setup_persistent_brokerd
 
     await _services.start_service_task(
         dname,