From 80b8e665f7c08045ba62cf80cc26856742580c87 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@hoyer.xyz>
Date: Wed, 13 May 2026 12:04:00 +0200
Subject: [PATCH] chore: enable bevy/debug and bevy/track_location by default
 via dev feature

Cargo features cannot be scoped to a build profile, so add a `dev` feature
that pulls in `bevy/debug` and `bevy/track_location` and make it a default
feature. This surfaces real type names and source locations in ECS panics
(e.g. B0001 query conflicts) for normal `cargo build` / `cargo run` /
`cargo test`, at the cost of a small overhead. Shipping builds opt out
with `--release --no-default-features`.

Removes the now-redundant `[dev-dependencies] bevy = { features = ["debug"] }`
override, since the default feature already covers test builds.
---
 Cargo.toml | 7 ++++---
 README.md  | 9 +++++++++
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 8d23f96..1db0865 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,12 +3,13 @@ name = "bglga"
 version = "0.1.0"
 edition = "2021"
 
+[features]
+default = ["dev"]
+dev = ["bevy/debug", "bevy/track_location"]
+
 [dependencies]
 bevy = "0.18"
 fastrand = "2.0.1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 dirs = "6"
-
-[dev-dependencies]
-bevy = { version = "0.18", features = ["debug"] }
diff --git a/README.md b/README.md
index f43b613..6cd7176 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,15 @@ The game features:
 nix develop --command cargo build
 ```
 
+The `dev` cargo feature is enabled by default and turns on `bevy/debug` and
+`bevy/track_location` so ECS panics (e.g. `B0001` query conflicts) report
+real type names and source locations. For a shipping release build, disable
+it:
+
+```
+nix develop --command cargo build --release --no-default-features
+```
+
 ## How to Test
 
 ```