(Ethos) OS Updates

Bloom System uses OSTree to build an immutable operating system, similar to A/B updates Android does.

• System is still built using Ubuntu (currently 20.04) and 'has' apt although it doesn't work.
  • You can enable a shallow read (called a hotfix) with sudo ostree admin unlock --hotfix.
  • After this, apt update and apt install x should work.
  • I feel like we should put this under a dev_install_unsafe command.

Update System

Prior art:

• https://android.googlesource.com/platform/system/update_engine/
• https://github.com/endlessm/eos-updater

updated

• Daemon for checking updates
• Since we use updated for both system and Market, we can initially compare /summary branch HEADs.
• If on unmetered connection, check out OSTree and Market data.
• Prompt user if on metered connection the size of delta.
• If automatic updates are on (important), deploy to OSTree automatically.

In the future:

• It would be amazing if we could do what eos-updater does and share OSTree branches across network with Zeroconf.

updatectl

• CLI client for monitoring / checking updates.
• Cronjob that checks updates 4x daily