don't overwrite icon with every start

src/install.py

@@ -1,3 +1,5 @@
+import logging
+import os
 import sys
 import textwrap
 from pathlib import Path
@@ -46,11 +48,16 @@ def _linux_install_icon():
     local_share = Path.home().joinpath(".local").joinpath("share")
     if local_share.is_dir():
         icon_dir = local_share / "icons" / "hicolor" / "scalable" / "apps"
-        icon_dir.mkdir(parents=True, exist_ok=True)
         _linux_install_icon_to_path(icon_dir / "krowlog.svg")
 
 
 def _linux_install_icon_to_path(path: Path):
+    if path.exists():
+        return
+
+    if not path.parent.exists():
+        path.parent.mkdir(parents=True, exist_ok=True)
+
     svg = textwrap.dedent("""<?xml version="1.0" encoding="UTF-8" standalone="no"?>
     <svg width="64" height="64" viewBox="0 0 128 128" version="1.1" xmlns="http://www.w3.org/2000/svg">
         <defs>