Make a way to disable extism

- Made a `plugins` feature in `pumpkin-plugin`
- Made a `plugins` feature in `pumpkin`, which enables the `plugins` feature in `pumpkin-plugin`
- Made the feature default

Cargo.toml

@@ -33,6 +33,6 @@ tokio = { version = "1.40", features = [
     "sync",
 ] }
 rayon = "1.10.0"
-uuid = { version = "1.10.0", features = ["serde", "v3"] }
+uuid = { version = "1.10.0", features = ["serde", "v3", "v4"] }
 derive_more = { version = "1.0.0", features = ["full"] }
 serde = { version = "1.0", features = ["derive"] }

pumpkin-plugin/Cargo.toml

@@ -3,7 +3,11 @@ name = "pumpkin-plugin"
 version.workspace = true
 edition.workspace = true
 
+[features]
+default = []
+plugins = ["dep:extism"]
+
 [dependencies]
 serde.workspace = true
 log.workspace = true
-extism = "1.6.0"
+extism = { version = "1.6.0", optional = true }

pumpkin-plugin/src/api/identifer.rs

@@ -1,15 +1,17 @@
+#[cfg(feature = "plugins")]
 use extism::{convert::Msgpack, host_fn, FromBytes, ToBytes};
-use serde::{Deserialize, Serialize};
 
 /// Used to keep track of things created by plugins.
 /// This can include things like events, commands, etc.
-#[derive(Hash, PartialEq, Eq, ToBytes, FromBytes, Serialize, Deserialize)]
+#[derive(Hash, PartialEq, Eq, ToBytes, FromBytes, serde::Serialize, serde::Deserialize)]
+#[cfg(feature = "plugins")]
 #[encoding(Msgpack)] // TODO: Switch to protocal buffers for smaller size
 struct Identifier {
     namespace: String,
     path: String,
 }
 
+#[cfg(feature = "plugins")]
 host_fn!(new(namespace: String, path: String) -> Result<Identifier, _> {
     Ok(Identifier { namespace, path })
 });

pumpkin-plugin/src/lib.rs

@@ -1,17 +1,24 @@
 mod api;
 
-use std::path::Path;
-
+#[cfg(feature = "plugins")]
 use extism::{Manifest, Plugin, Wasm};
 
 pub const PLUGIN_DIR: &str = "plugins";
 
+pub struct PumpkinPlugin {
+    #[cfg(feature = "plugins")]
+    _plugin: Plugin,
+}
+
 pub struct PluginLoader {
-    plugins: Vec<Plugin>,
+    plugins: Vec<PumpkinPlugin>,
 }
 
 impl PluginLoader {
     pub fn load() -> Self {
+        #[cfg(feature = "plugins")]
+        {
+            use std::path::Path;
             let plugin_dir = Path::new(PLUGIN_DIR);
             if !plugin_dir.exists() || !plugin_dir.is_dir() {
                 log::info!("Creating plugins dir...");
@@ -38,14 +45,21 @@ impl PluginLoader {
                     plugin
                         .call::<(), ()>("on_enable", ())
                         .expect("Failed to call on_enable funcation");
-                plugins.push(plugin);
+                    let pumpkin_plugin = PumpkinPlugin { _plugin: plugin };
+                    plugins.push(pumpkin_plugin);
                 }
             }
 
             Self { plugins }
         }
 
-    pub fn plugins(&mut self) -> &mut Vec<Plugin> {
+        #[cfg(not(feature = "plugins"))]
+        Self {
+            plugins: Vec::new(),
+        }
+    }
+
+    pub fn plugins(&mut self) -> &mut Vec<PumpkinPlugin> {
         &mut self.plugins
     }
 }

pumpkin/Cargo.toml

@@ -5,7 +5,8 @@ description = "Empowering everyone to host fast and efficient Minecraft servers.
 edition = "2021"
 
 [features]
-default = []
+default = ["plugins"]
+plugins = ["pumpkin-plugin/plugins"]
 
 [dependencies]
 # pumpkin