Don't use orjson as per fifth bullet of
https://github.com/ankitects/anki/blob/2.1.49/docs/new-platform.md#protobuf--python
--- anki-2.1.49/pip/requirements.txt
+++ anki-2.1.49_no_orjson/pip/requirements.txt
@@ -77,7 +77,8 @@
     # via -r requirements.in
 mypy==0.902
     # via -r requirements.in
-orjson==3.5.3
+#skip orjson for alpine according to bullet 5 in https://github.com/ankitects/anki/blob/2.1.49/docs/new-platform.md#protobuf--python
+#orjson==3.5.3
     # via -r requirements.in
 packaging==20.9
     # via pytest
--- anki-2.1.49/pylib/anki/BUILD.bazel
+++ anki-2.1.49_no_orjson/pylib/anki/BUILD.bazel
@@ -85,7 +85,6 @@
         "protobuf>=3.17",
         "markdown",
         "stringcase",
-        'orjson; platform_machine == "x86_64"',
         'psutil; sys_platform == "win32"',
         'distro; sys_platform != "darwin" and sys_platform != "win32"',
     ],