December 2021

Make AppLinks (launching the app from an https:// URL) work for a Flutter Android build — keystore signing, getting the SHA256 fingerprint, and Digital Asset Links setup.

If `keytool -list` does not show the SHA256 fingerprint of an Android keystore, you need the `-v` flag and a newer JDK — here are the details.

Here is the solution for resolving the ImportError: cannot import name 'ugettext_lazy' from 'django.utils.translation' that occurs when running manage.py hoge in Django.

When `kubectl rollout restart` makes Pods take too long to restart, check `terminationGracePeriodSeconds` and any preStop hooks — both are common bottlenecks.

When using a DisplayLink external display on an M1 Mac, system notifications stop appearing. Workaround: route notifications to the built-in display instead.

Fix `pip install mysqlclient` failing on macOS with `clang: error: -lzstd` — `brew install zstd` or add the right `LDFLAGS`.

Fix `no space left on device` build failures in Docker Desktop on macOS — grow the Docker.raw disk allocation or run `docker system prune`.