diff --git a/lang/src/fs.rs b/lang/src/fs.rs
index 9744692b..5106330e 100644
--- a/lang/src/fs.rs
+++ b/lang/src/fs.rs
@@ -8,6 +8,7 @@ use {
     core::{fmt::Write, num::NonZeroUsize, ops::Deref},
     hashbrown::hash_map,
     std::{
+        borrow::ToOwned,
         collections::VecDeque,
         eprintln,
         ffi::OsStr,
@@ -36,6 +37,33 @@ impl log::Log for Logger {
     fn flush(&self) {}
 }
 
+pub const ABLEOS_PATH_RESOLVER: PathResolver =
+    &|mut path: &str, mut from: &str, tmp: &mut PathBuf| {
+        tmp.clear();
+
+        path = match path {
+            "stn" => {
+                from = "";
+                "./sysdata/libraries/stn/src/lib.hb"
+            }
+            _ => path,
+        };
+
+        match path.split_once(':') {
+            Some(("lib", p)) => tmp.extend(["./sysdata/libraries", p, "src/lib.hb"]),
+            Some(("stn", p)) => {
+                tmp.extend(["./sysdata/libraries/stn/src", &(p.to_owned() + ".hb")])
+            }
+            Some(("sysdata", p)) => tmp.extend(["./sysdata", p]),
+            None => match Path::new(from).parent() {
+                Some(parent) => tmp.extend([parent, Path::new(path)]),
+                None => tmp.push(path),
+            },
+            _ => panic!("path: '{path}' is invalid: unexpected ':'"),
+        };
+        tmp.canonicalize().map_err(|source| CantLoadFile { path: std::mem::take(tmp), source })
+    };
+
 #[derive(Default)]
 pub struct Options<'a> {
     pub fmt: bool,
diff --git a/lang/src/main.rs b/lang/src/main.rs
index 3cb48f6f..dfc9103a 100644
--- a/lang/src/main.rs
+++ b/lang/src/main.rs
@@ -1,42 +1,11 @@
 #[cfg(feature = "std")]
 fn main() {
-    use std::{
-        io::Write,
-        path::{Path, PathBuf},
-    };
-
-    static ABLEOS_PATH_RESOLVER: hblang::PathResolver =
-        &|mut path: &str, mut from: &str, tmp: &mut PathBuf| {
-            tmp.clear();
-
-            path = match path {
-                "stn" => {
-                    from = "";
-                    "./sysdata/libraries/stn/src/lib.hb"
-                }
-                _ => path,
-            };
-
-            match path.split_once(':') {
-                Some(("lib", p)) => tmp.extend(["./sysdata/libraries", p, "src/lib.hb"]),
-                Some(("stn", p)) => {
-                    tmp.extend(["./sysdata/libraries/stn/src", &(p.to_owned() + ".hb")])
-                }
-                Some(("sysdata", p)) => tmp.extend(["./sysdata", p]),
-                None => match Path::new(from).parent() {
-                    Some(parent) => tmp.extend([parent, Path::new(path)]),
-                    None => tmp.push(path),
-                },
-                _ => panic!("path: '{path}' is invalid: unexpected ':'"),
-            };
-            tmp.canonicalize()
-                .map_err(|source| hblang::CantLoadFile { path: std::mem::take(tmp), source })
-        };
+    use std::io::Write;
 
     fn run(out: &mut Vec<u8>, warnings: &mut String) -> std::io::Result<()> {
         let args = std::env::args().collect::<Vec<_>>();
         let args = args.iter().map(String::as_str).collect::<Vec<_>>();
-        let resolvers = &[("ableos", ABLEOS_PATH_RESOLVER)];
+        let resolvers = &[("ableos", hblang::ABLEOS_PATH_RESOLVER)];
         let opts = hblang::Options::from_args(&args, out, resolvers)?;
         let file = args.iter().filter(|a| !a.starts_with('-')).nth(1).copied().unwrap_or("main.hb");
 
diff --git a/lang/src/son/hbvm/regalloc.rs b/lang/src/son/hbvm/regalloc.rs
index 2fe62f06..7ac01e42 100644
--- a/lang/src/son/hbvm/regalloc.rs
+++ b/lang/src/son/hbvm/regalloc.rs
@@ -175,24 +175,6 @@ impl HbvmBackend {
                             graph[d as usize] = s;
                         }
 
-                        // [3, 2, 0]
-
-                        // cp 0, 1 = 3
-                        // cp 1, 2 = 2
-                        // cp 2, 0 = 1
-                        //
-                        // swp a, b
-                        // swp b, c
-
-                        // cp a, b
-                        // cp b, c
-                        // cp c, d
-                        // cp d, a
-                        //
-                        // swp a, b
-                        // swp b, c
-                        // swp c, d
-
                         'o: for &mut [d, s, ref mut depth] in moves.iter_mut() {
                             let mut c = s;
                             loop {