Ensure that copytree preserves symlinks

platformio/builder/main.py

@@ -128,7 +128,9 @@ if (
     click.secho(
         "There is a known issue with Python 3.8+ and mapped network drives on "
         "Windows.\nPlease downgrade Python to the latest 3.7. More details at:\n"
-        "https://github.com/platformio/platformio-core/issues/3417", fg="yellow")
+        "https://github.com/platformio/platformio-core/issues/3417",
+        fg="yellow",
+    )
 
 if env.subst("$BUILD_CACHE_DIR"):
     if not isdir(env.subst("$BUILD_CACHE_DIR")):

platformio/commands/account/client.py

@@ -21,8 +21,8 @@ import requests.adapters
 from requests.packages.urllib3.util.retry import Retry  # pylint:disable=import-error
 
 from platformio import __pioaccount_api__, app
-from platformio.exception import InternetIsOffline
 from platformio.commands.account import exception
+from platformio.exception import InternetIsOffline
 
 
 class AccountClient(object):

platformio/commands/home/rpc/handlers/os.py

@@ -107,7 +107,7 @@ class OSRPC(object):
 
     @staticmethod
     def copy(src, dst):
-        return shutil.copytree(src, dst)
+        return shutil.copytree(src, dst, symlinks=True)
 
     @staticmethod
     def glob(pathnames, root=None):

platformio/commands/home/rpc/handlers/project.py

@@ -300,7 +300,7 @@ class ProjectRPC(object):
             src_dir = config.get_optional_dir("src")
             if os.path.isdir(src_dir):
                 fs.rmtree(src_dir)
-            shutil.copytree(arduino_project_dir, src_dir)
+            shutil.copytree(arduino_project_dir, src_dir, symlinks=True)
         return project_dir
 
     @staticmethod
@@ -313,7 +313,7 @@ class ProjectRPC(object):
             AppRPC.load_state()["storage"]["projectsDir"],
             time.strftime("%y%m%d-%H%M%S-") + os.path.basename(project_dir),
         )
-        shutil.copytree(project_dir, new_project_dir)
+        shutil.copytree(project_dir, new_project_dir, symlinks=True)
 
         state = AppRPC.load_state()
         args = ["init"]

platformio/managers/package.py

@@ -475,7 +475,7 @@ class PkgInstallerMixin(object):
                     self.unpack(_url, tmp_dir)
                 else:
                     fs.rmtree(tmp_dir)
-                    shutil.copytree(_url, tmp_dir)
+                    shutil.copytree(_url, tmp_dir, symlinks=True)
             elif url.startswith(("http://", "https://")):
                 dlpath = self.download(url, tmp_dir, sha1)
                 assert isfile(dlpath)