From 8564676ed30e3adcc6ed5f7f0b5083277a505436 Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Thu, 13 Feb 2025 11:04:59 -0500
Subject: [PATCH] Teensie `piker.data` styling tweaks

- use more compact optional value style with `|`-union
- fix `.flows` typing-only import since we need `MktPair` to be
  immediately defined for use on a `msgspec.Struct` field.
- more "tree-like" warning msg in `.validate()` reporting.
---
 piker/data/feed.py     | 6 ++----
 piker/data/flows.py    | 6 +++---
 piker/data/validate.py | 6 +++---
 3 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/piker/data/feed.py b/piker/data/feed.py
index 7264c8e6..d47d8df9 100644
--- a/piker/data/feed.py
+++ b/piker/data/feed.py
@@ -786,7 +786,6 @@ async def install_brokerd_search(
 
 @acm
 async def maybe_open_feed(
-
     fqmes: list[str],
     loglevel: str | None = None,
 
@@ -840,13 +839,12 @@ async def maybe_open_feed(
 
 @acm
 async def open_feed(
-
     fqmes: list[str],
 
-    loglevel: str | None = None,
+    loglevel: str|None = None,
     allow_overruns: bool = True,
     start_stream: bool = True,
-    tick_throttle: float | None = None,  # Hz
+    tick_throttle: float|None = None,  # Hz
 
     allow_remote_ctl_ui: bool = False,
 
diff --git a/piker/data/flows.py b/piker/data/flows.py
index 677b2f69..573180b9 100644
--- a/piker/data/flows.py
+++ b/piker/data/flows.py
@@ -36,10 +36,10 @@ from ._sharedmem import (
     ShmArray,
     _Token,
 )
+from piker.accounting import MktPair
 
 if TYPE_CHECKING:
-    from ..accounting import MktPair
-    from .feed import Feed
+    from piker.data.feed import Feed
 
 
 class Flume(Struct):
@@ -82,7 +82,7 @@ class Flume(Struct):
 
     # TODO: do we need this really if we can pull the `Portal` from
     # ``tractor``'s internals?
-    feed: Feed | None = None
+    feed: Feed|None = None
 
     @property
     def rt_shm(self) -> ShmArray:
diff --git a/piker/data/validate.py b/piker/data/validate.py
index cefa0f1f..c5317ede 100644
--- a/piker/data/validate.py
+++ b/piker/data/validate.py
@@ -113,9 +113,9 @@ def validate_backend(
             )
             if ep is None:
                 log.warning(
-                    f'Provider backend {mod.name} is missing '
-                    f'{daemon_name} support :(\n'
-                    f'The following endpoint is missing: {name}'
+                    f'Provider backend {mod.name!r} is missing '
+                    f'{daemon_name!r} support?\n'
+                    f'|_module endpoint-func missing: {name!r}\n'
                 )
 
     inits: list[