ensure lock file's dir exists

Author: 2bndy5

clang-installer/src/utils.rs

@@ -1,6 +1,6 @@
 //! A utility module for path normalization.
 use std::{
-    fs::File,
+    fs::{self, File, OpenOptions},
     path::{Component, Path, PathBuf},
 };
 
@@ -47,7 +47,10 @@ pub fn normalize_path(path: &Path) -> PathBuf {
 /// 2. deleting the file when done (if desired).
 pub fn lock_path(path: &Path) -> Result<File, std::io::Error> {
     let lock_path = path.with_added_extension("lock");
-    let file_lock = std::fs::OpenOptions::new()
+    if let Some(parent) = lock_path.parent() {
+        fs::create_dir_all(parent)?;
+    }
+    let file_lock = OpenOptions::new()
         .read(true)
         .create(true)
         .open(&lock_path)?;