f

SYS/utils.py

@@ -37,7 +37,15 @@ def expand_path(p: str | Path | None) -> Path:
     """Expand ~ and environment variables in path."""
     if p is None:
         return None  # type: ignore
-    expanded = os.path.expandvars(str(p))
+    s = str(p)
+    # Courtesy check for $home -> $HOME if we're on a POSIX-like system
+    # (where env vars are case-sensitive)
+    if os.name != 'nt' and '$home' in s and '$HOME' not in os.environ:
+         # If $home is literally used in config but only HOME is defined
+         if 'HOME' in os.environ:
+             s = s.replace('$home', '$HOME')
+    
+    expanded = os.path.expandvars(s)
     return Path(expanded).expanduser()