free ourselves from the shackles of libstd

src/arch.rs

@@ -1,5 +1,6 @@
-use std::simd::u64x2;
-use std::mem::{size_of, zeroed};
+use core::prelude::*;
+use core::simd::u64x2;
+use core::mem::{size_of, zeroed};
 
 use stack::Stack;
 

src/context.rs

@@ -1,5 +1,8 @@
-use std::mem::transmute;
-use std::raw;
+use core::prelude::*;
+
+use core::mem::transmute;
+use core::raw;
+use alloc::boxed::Box;
 use fn_box::FnBox;
 
 use stack::Stack;

src/lib.rs

@@ -1,8 +1,15 @@
-#![feature(default_type_params, macro_rules)]
+#![feature(default_type_params, macro_rules, phase, globs)]
+#![no_std]
+
+#[phase(plugin, link)]
+extern crate core;
+extern crate alloc;
 extern crate fn_box;
 
 pub use context::Context;
 
+mod std { pub use core::fmt; }
+
 #[macro_escape]
 mod macros;
 

src/platform.rs

@@ -1,6 +1,8 @@
 extern crate libc;
-use std::os::{errno, page_size, MemoryMap, MapReadable, MapWritable,
-              MapNonStandardFlags};
+extern crate std;
+use self::std::prelude::*;
+use self::std::os::{errno, page_size, MemoryMap, MapReadable, MapWritable,
+                    MapNonStandardFlags};
 
 extern "C" {
   #[link_name = "lwt_stack_register"]

src/stack.rs

@@ -1,5 +1,5 @@
 use platform;
-use std::ptr;
+use core::ptr;
 
 pub enum Stack {
   Native {