use arrayvec instead of heapless

Cargo.toml

@@ -4,7 +4,7 @@ members = [
 	"cargo",
 	"api/*",
 	"support/*",
-	"components/*"
+	# "components/*"
 ]
 default-members = ["cargo", "support/tool"]
 exclude = ["cargo/tests/crates/**/*"]

api/sys/Cargo.toml

@@ -53,7 +53,7 @@ bindings-derive-constparamty = [] # derive `ConstParamTy`
 
 
 [dependencies]
-heapless = "0.7"
+arrayvec = { version = "0.7.4", default-features = false }
 
 
 [build-dependencies]
@@ -98,12 +98,13 @@ cargo-args = [
 name = "hello-world"
 crate-type = ["dylib", "staticlib"]
 path = "examples/hello-world.rs"
+required-features = ["lang-items"]
 
 [[example]]
 name = "handler"
 crate-type = ["dylib", "staticlib"]
 path = "examples/handler.rs"
-required-features = ["entry-point"]
+required-features = ["lang-items", "entry-point"]
 
 [package.metadata.playdate]
 bundle-id = "rs.playdate.sys"

api/sys/src/sys/panic.rs

@@ -3,13 +3,13 @@
 
 use core::panic::PanicInfo;
 use core::fmt::Write;
-use heapless::String;
+use arrayvec::ArrayString;
 use super::proc::error;
 
 
 #[panic_handler]
 fn panic(#[allow(unused)] panic_info: &PanicInfo) -> ! {
-	let mut output = String::<1024>::new();
+	let mut output = ArrayString::<1024>::new();
 	let payload = if let Some(payload) = panic_info.payload().downcast_ref::<&str>() {
 		payload
 	} else {