Don't user display empty string for absolute path CWD (#15897)

With the previous order an absolute path would become an empty string.

Author: konstin

crates/uv-fs/src/path.rs

@@ -69,15 +69,15 @@ impl<T: AsRef<Path>> Simplified for T {
             return path.display();
         }
 
+        // Attempt to strip the current working directory, then the canonicalized current working
+        // directory, in case they differ.
+        let path = path.strip_prefix(CWD.simplified()).unwrap_or(path);
+
         if path.as_os_str() == "" {
             // Avoid printing an empty string for the current directory
             return Path::new(".").display();
         }
 
-        // Attempt to strip the current working directory, then the canonicalized current working
-        // directory, in case they differ.
-        let path = path.strip_prefix(CWD.simplified()).unwrap_or(path);
-
         path.display()
     }
 

crates/uv-workspace/src/dependency_groups.rs

@@ -253,7 +253,7 @@ impl IntoIterator for FlatDependencyGroups {
 #[derive(Debug, Error)]
 #[error("{} has malformed dependency groups", if path.is_empty() && package.is_empty() {
     "Project".to_string()
-} else if path.is_empty() {
+} else if path.is_empty() || path == "." {
     format!("Project `{package}`")
 } else if package.is_empty() {
     format!("`{path}`")