Merge branch 'exe-ordered' of https://github.com/blueyed/kitty

Fixes #1406

kitty/constants.py

@@ -24,8 +24,11 @@ def kitty_exe():
     if ans is None:
         rpath = getattr(sys, 'bundle_exe_dir', None)
         if not rpath:
-            items = frozenset(os.environ['PATH'].split(os.pathsep))
+            items = os.environ['PATH'].split(os.pathsep)
+            seen = set()
             for candidate in items:
+                if candidate not in seen:
+                    seen.add(candidate)
                     if os.access(os.path.join(candidate, 'kitty'), os.X_OK):
                         rpath = candidate
                         break