fix(tvix/eval): fix Compiler::new on wasm r/5121

This path normalisation business causes runtime panics on WebAssembly
because those operations are unsupported.

Maybe this shouldn't be happening in the compiler anyways, not sure,
but for now this commit adds a workaround based on the target to
disable the normalisation if we're compiling for wasm.

Change-Id: I908a84fbdffc3401f8d443e2c73ec673e9f397ff
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7004
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI

1 files changed, 3 insertions, 1 deletions

diff --git a/tvix/eval/src/compiler/mod.rs b/tvix/eval/src/compiler/mod.rs
index bf59027c8b..e3076246de 100644
--- a/tvix/eval/src/compiler/mod.rs
+++ b/tvix/eval/src/compiler/mod.rs
@@ -112,7 +112,7 @@ impl<'observer> Compiler<'observer> {
         observer: &'observer mut dyn CompilerObserver,
     ) -> EvalResult<Self> {
         let mut root_dir = match location {
-            Some(dir) if dir.is_absolute() => Ok(dir),
+            Some(dir) if cfg!(target_arch = "wasm32") || dir.is_absolute() => Ok(dir),
             _ => {
                 let current_dir = std::env::current_dir().map_err(|e| Error {
                     kind: ErrorKind::PathResolution(format!(
@@ -138,7 +138,9 @@ impl<'observer> Compiler<'observer> {
 
         let globals = globals.borrow();
 
+        #[cfg(not(target_arch = "wasm32"))]
         debug_assert!(root_dir.is_absolute());
+
         Ok(Self {
             root_dir,
             file,