Remove deprecated bevy_dynamic_plugin (#14534)

# Objective

- Dynamic plugins were deprecated in #13080 due to being unsound. The
plan was to deprecate them in 0.14 and remove them in 0.15.

## Solution

- Remove all dynamic plugin functionality.
- Update documentation to reflect this change.

---

## Migration Guide

Dynamic plugins were deprecated in 0.14 for being unsound, and they have
now been fully removed. Please consider using the alternatives listed in
the `bevy_dynamic_plugin` crate documentation, or worst-case scenario
you may copy the code from 0.14.

Cargo.toml

@@ -110,9 +110,6 @@ bevy_core_pipeline = [
   "bevy_render",
 ]
 
-# Plugin for dynamic loading (using [libloading](https://crates.io/crates/libloading))
-bevy_dynamic_plugin = ["bevy_internal/bevy_dynamic_plugin"]
-
 # Adds gamepad support
 bevy_gilrs = ["bevy_internal/bevy_gilrs"]
 

crates/bevy_app/src/lib.rs

@@ -18,7 +18,6 @@ mod sub_app;
 mod terminal_ctrl_c_handler;
 
 pub use app::*;
-pub use bevy_derive::DynamicPlugin;
 pub use main_schedule::*;
 pub use panic_handler::*;
 pub use plugin::*;
@@ -38,6 +37,6 @@ pub mod prelude {
             PostStartup, PostUpdate, PreStartup, PreUpdate, SpawnScene, Startup, Update,
         },
         sub_app::SubApp,
-        DynamicPlugin, Plugin, PluginGroup,
+        Plugin, PluginGroup,
     };
 }

crates/bevy_app/src/plugin.rs

@@ -120,16 +120,6 @@ impl Plugin for PlaceholderPlugin {
     fn build(&self, _app: &mut App) {}
 }
 
-/// A type representing an unsafe function that returns a mutable pointer to a [`Plugin`].
-/// It is used for dynamically loading plugins.
-///
-/// See `bevy_dynamic_plugin/src/loader.rs#dynamically_load_plugin`.
-#[deprecated(
-    since = "0.14.0",
-    note = "The current dynamic plugin system is unsound and will be removed in 0.15."
-)]
-pub type CreatePlugin = unsafe fn() -> *mut dyn Plugin;
-
 /// Types that represent a set of [`Plugin`]s.
 ///
 /// This is implemented for all types which implement [`Plugin`],

crates/bevy_derive/src/lib.rs

@@ -9,7 +9,6 @@
 
 extern crate proc_macro;
 
-mod app_plugin;
 mod bevy_main;
 mod derefs;
 mod enum_variant_meta;
@@ -18,19 +17,6 @@ use bevy_macro_utils::{derive_label, BevyManifest};
 use proc_macro::TokenStream;
 use quote::format_ident;
 
-/// Generates a dynamic plugin entry point function for the given `Plugin` type.
-///
-/// This is deprecated since 0.14. The current dynamic plugin system is unsound and will be removed in 0.15.
-#[proc_macro_derive(DynamicPlugin)]
-#[deprecated(
-    since = "0.14.0",
-    note = "The current dynamic plugin system is unsound and will be removed in 0.15."
-)]
-pub fn derive_dynamic_plugin(input: TokenStream) -> TokenStream {
-    #[allow(deprecated)]
-    app_plugin::derive_dynamic_plugin(input)
-}
-
 /// Implements [`Deref`] for structs. This is especially useful when utilizing the [newtype] pattern.
 ///
 /// For single-field structs, the implementation automatically uses that field.

crates/bevy_diagnostic/Cargo.toml

@@ -31,7 +31,7 @@ sysinfo = { version = "0.30.0", optional = true, default-features = false, featu
   "apple-app-store",
 ] }
 
-# Only include when not bevy_dynamic_plugin and on linux/windows/android
+# Only include when on linux/windows/android
 [target.'cfg(any(target_os = "linux", target_os = "windows", target_os = "android"))'.dependencies]
 sysinfo = { version = "0.30.0", optional = true, default-features = false }
 

crates/bevy_internal/Cargo.toml

@@ -230,7 +230,6 @@ bevy_audio = { path = "../bevy_audio", optional = true, version = "0.15.0-dev" }
 bevy_color = { path = "../bevy_color", optional = true, version = "0.15.0-dev" }
 bevy_core_pipeline = { path = "../bevy_core_pipeline", optional = true, version = "0.15.0-dev" }
 bevy_dev_tools = { path = "../bevy_dev_tools", optional = true, version = "0.15.0-dev" }
-bevy_dynamic_plugin = { path = "../bevy_dynamic_plugin", optional = true, version = "0.15.0-dev" }
 bevy_gilrs = { path = "../bevy_gilrs", optional = true, version = "0.15.0-dev" }
 bevy_gizmos = { path = "../bevy_gizmos", optional = true, version = "0.15.0-dev", default-features = false }
 bevy_gltf = { path = "../bevy_gltf", optional = true, version = "0.15.0-dev" }

crates/bevy_internal/src/lib.rs

@@ -29,8 +29,6 @@ pub use bevy_core_pipeline as core_pipeline;
 #[cfg(feature = "bevy_dev_tools")]
 pub use bevy_dev_tools as dev_tools;
 pub use bevy_diagnostic as diagnostic;
-#[cfg(feature = "bevy_dynamic_plugin")]
-pub use bevy_dynamic_plugin as dynamic_plugin;
 pub use bevy_ecs as ecs;
 #[cfg(feature = "bevy_gilrs")]
 pub use bevy_gilrs as gilrs;

crates/bevy_internal/src/prelude.rs

@@ -51,10 +51,6 @@ pub use crate::text::prelude::*;
 #[cfg(feature = "bevy_ui")]
 pub use crate::ui::prelude::*;
 
-#[doc(hidden)]
-#[cfg(feature = "bevy_dynamic_plugin")]
-pub use crate::dynamic_plugin::*;
-
 #[doc(hidden)]
 #[cfg(feature = "bevy_gizmos")]
 pub use crate::gizmos::prelude::*;

docs/cargo_features.md

@@ -54,7 +54,6 @@ The default feature set enables most of the expected features of a game engine,
 |bevy_ci_testing|Enable systems that allow for automated testing on CI|
 |bevy_debug_stepping|Enable stepping-based debugging of Bevy systems|
 |bevy_dev_tools|Provides a collection of developer tools|
-|bevy_dynamic_plugin|Plugin for dynamic loading (using [libloading](https://crates.io/crates/libloading))|
 |bmp|BMP image format support|
 |dds|DDS compressed texture support|
 |debug_glam_assert|Enable assertions in debug builds to check the validity of parameters passed to glam|

tools/publish.sh

@@ -16,7 +16,6 @@ crates=(
     bevy_app
     bevy_time
     bevy_log
-    bevy_dynamic_plugin
     bevy_asset/macros
     bevy_asset
     bevy_audio