use a junction instead of a symbolic link

Author: tomvanmele

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+* Changed `compas._os._polyfill_symlinks` to use junction (/J) instead of symbolic link (/D).
+
 ### Removed
 
 

src/compas/_os.py

@@ -316,7 +316,7 @@ def _polyfill_symlinks(symlinks, raise_on_error):
         mklink_cmd.write("SET /A symlink_result=0\n")
         mklink_cmd.write("ECHO ret=%symlink_result%\n")
         for i, (source, link_name) in enumerate(symlinks):
-            dir_symlink_arg = "/D" if os.path.isdir(source) else ""
+            dir_symlink_arg = "/J" if os.path.isdir(source) else ""
             mklink_cmd.write("mklink {} {}\n".format(dir_symlink_arg, subprocess.list2cmdline([link_name, source])))
             mklink_cmd.write("IF %ERRORLEVEL% EQU 0 SET /A symlink_result += {} \n".format(2**i))