updated dependencies script to fix permissions

Author: jaketheduque

src/update_dependencies.py

@@ -6,6 +6,25 @@
 import sys
 import shutil
 
+def onerror(func, path, exc_info):
+    """
+    Error handler for ``shutil.rmtree``.
+
+    If the error is due to an access error (read only file)
+    it attempts to add write permission and then retries.
+
+    If the error is for another reason it re-raises the error.
+    
+    Usage : ``shutil.rmtree(path, onerror=onerror)``
+    """
+    import stat
+    # Is the error an access error?
+    if not os.access(path, os.W_OK):
+        os.chmod(path, stat.S_IWUSR)
+        func(path)
+    else:
+        raise
+
 with open("libraries.json", "r") as file:
   libraries = json.load(file)
 
@@ -17,7 +36,7 @@
 for library in libraries:
   repo_name = library["git_url"].split("/")[-1].replace(".git", "")
   if Path(repo_name).exists():
-    shutil.rmtree(repo_name)
+    shutil.rmtree(repo_name, onerror=onerror)
 
   os.system(f"git clone {library["git_url"]}")
   os.chdir(os.path.join(arduino_lib_path, repo_name))
@@ -27,5 +46,6 @@
   else:
     os.system(f"git sparse-checkout set --no-cone {library["root_dir"]}")
     shutil.copytree(library["root_dir"], os.getcwd(), dirs_exist_ok=True)
-    shutil.rmtree(library["root_dir"].split("/")[0])
-    print(f"Moved {library["root_dir"]} to be the root of {repo_name}")
+    shutil.rmtree(library["root_dir"].split("/")[0], onerror=onerror)
+    print(f"Moved {library["root_dir"]} to be the root of {repo_name}")
+  shutil.rmtree(".git", onerror=onerror)