diff --git a/scripts/addons/cam/tests/install_addon.py b/scripts/addons/cam/tests/install_addon.py
index 4b6fedb7..554dcff8 100644
--- a/scripts/addons/cam/tests/install_addon.py
+++ b/scripts/addons/cam/tests/install_addon.py
@@ -6,45 +6,45 @@ import tempfile
 
 
 INSTALL_CODE = f"""
-import bpy\n
-bpy.context.preferences.system.use_online_access = True\n
-bpy.ops.extensions.repo_sync_all(use_active_only=False)\n
-bpy.ops.extensions.package_install_files(filepath='{sys.argv[1]}', repo='user_default')\n
-bpy.ops.extensions.package_install(repo_index=0, pkg_id="stl_format_legacy")\n
-bpy.ops.extensions.package_install(repo_index=0, pkg_id="simplify_curves_plus")\n
-bpy.ops.extensions.package_install(repo_index=0, pkg_id="curve_tools")\n
-bpy.ops.wm.save_userpref()\n
+import bpy
+bpy.context.preferences.system.use_online_access = True
+bpy.ops.extensions.repo_sync_all(use_active_only=False)
+bpy.ops.extensions.package_install_files(filepath='{sys.argv[1]}', repo='user_default')
+bpy.ops.extensions.package_install(repo_index=0, pkg_id="stl_format_legacy")
+bpy.ops.extensions.package_install(repo_index=0, pkg_id="simplify_curves_plus")
+bpy.ops.extensions.package_install(repo_index=0, pkg_id="curve_tools")
+bpy.ops.wm.save_userpref()
 """
 
 NUM_RETRIES = 10
 
-# with tempfile.TemporaryDirectory() as td:
-#     file = pathlib.Path(td, "install.py")
-#     file.write_text(INSTALL_CODE)
+with tempfile.TemporaryDirectory() as td:
+    file = pathlib.Path(td, "install.py")
+    file.write_text(INSTALL_CODE)
 
-# blender 4.0 installing addon crashes sometimes on mac github actions...
-for x in range(NUM_RETRIES):
-    try:
-        subprocess.run(
-            [shutil.which("blender"), "-b", "--python-text", INSTALL_CODE],
-            shell=False,
-            check=True,
-            stdout=subprocess.PIPE,
-            stderr=subprocess.STDOUT,
-            text=True,
-        )
-        print("installed addon okay")
-        sys.exit(0)
-    except subprocess.CalledProcessError as e:
-        print("Install addon failed, retrying:", e)
-        print("Command output:")
-        print("------------------------------")
-        print(e.output)
-        print("------------------------------")
-        for line in str(e.output):
-            if line.startswith("Writing: "):
-                crash_file = pathlib.Path(line[len("Writing: ") :])
-                if crash_file.exists():
-                    print("Crash log:\n================")
-                    print(crash_file.read_text())
-                    print("============================")
+    # blender 4.0 installing addon crashes sometimes on mac github actions...
+    for x in range(NUM_RETRIES):
+        try:
+            subprocess.run(
+                [shutil.which("blender"), "-b", "-P", str(file)],
+                shell=False,
+                check=True,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.STDOUT,
+                text=True,
+            )
+            print("installed addon okay")
+            sys.exit(0)
+        except subprocess.CalledProcessError as e:
+            print("Install addon failed, retrying:", e)
+            print("Command output:")
+            print("------------------------------")
+            print(e.output)
+            print("------------------------------")
+            for line in str(e.output):
+                if line.startswith("Writing: "):
+                    crash_file = pathlib.Path(line[len("Writing: ") :])
+                    if crash_file.exists():
+                        print("Crash log:\n================")
+                        print(crash_file.read_text())
+                        print("============================")