Skip compile_html test on musl (#1756)

The torch index has no musllinux wheel, so we need to skip the test on
alpine.

.gitignore

@@ -5,6 +5,7 @@
 # will have compiled files and executables
 debug/
 target/
+target-alpine/
 
 # Bootstrapped Python versions
 bin/

crates/uv/tests/pip_compile.rs

@@ -2434,6 +2434,7 @@ fn cache_errors_are_non_fatal() -> Result<()> {
 
 /// Resolve a distribution from an HTML-only registry.
 #[test]
+#[cfg(not(target_env = "musl"))] // No musllinux wheels in the torch index
 fn compile_html() -> Result<()> {
     let context = TestContext::new("3.12");
     let requirements_in = context.temp_dir.child("requirements.in");