Refactor normalized_build to accept slice instead of string

Author: namanlp

crates/cargo-util-schemas/src/manifest/mod.rs

@@ -254,12 +254,12 @@ impl TomlPackage {
         self.authors.as_ref().map(|v| v.normalized()).transpose()
     }
 
-    pub fn normalized_build(&self) -> Result<Option<&String>, UnresolvedError> {
+    pub fn normalized_build(&self) -> Result<Option<&[String]>, UnresolvedError> {
         let build = self.build.as_ref().ok_or(UnresolvedError)?;
         match build {
             TomlPackageBuild::Auto(false) => Ok(None),
             TomlPackageBuild::Auto(true) => Err(UnresolvedError),
-            TomlPackageBuild::SingleScript(value) => Ok(Some(value)),
+            TomlPackageBuild::SingleScript(value) => Ok(Some(std::slice::from_ref(value))),
         }
     }
 

src/cargo/util/toml/targets.rs

@@ -105,7 +105,8 @@ pub(super) fn to_targets(
         if metabuild.is_some() {
             anyhow::bail!("cannot specify both `metabuild` and `build`");
         }
-        let custom_build = Path::new(custom_build);
+        assert_eq!(custom_build.len(), 1);
+        let custom_build = Path::new(&custom_build[0]);
         let name = format!(
             "build-script-{}",
             custom_build