Flatpak Repo Temp
Flatpak stores temporary repository data under /var/lib/flatpak/repo/tmp while pulling refs, fetching OSTree objects, importing deltas, and verifying commits during system-wide app and runtime installs. This area can accumulate partial object files, unpacked static-delta chunks, temporary metadata, and interrupted download remnants after failed updates or aborted installs. Kudu removes only these transient repo temp files, not installed Flatpak apps, runtimes, remotes, settings, or user data, and cleaning requires admin privileges because the path belongs to the system Flatpak installation.
Why clean Flatpak Repo Temp?
- Interrupted Flatpak downloads leave partial OSTree objects and static-delta fragments in repo/tmp, so later installs may appear stuck on fetching or repeatedly restart the same download
- Temporary files from failed system-wide updates can consume several gigabytes under /var/lib/flatpak, and the symptom users notice is disk space not returning even after the failed install is gone
- Aborted commit verification or import steps can leave stale temp metadata behind, which may coincide with update jobs that fail early and then succeed only after the temporary state is cleared
- Repo/tmp is meant for short-lived transaction data; when old remnants pile up, package operations can spend extra time scanning or cleaning temp content before starting, showing up as unusually slow flatpak update or install commands
- Shared system Flatpak transactions use this temp area during pulls, so leftover files from an earlier crashed operation can confuse the next system install attempt and produce repeated download, checksum, or import errors visible in the terminal or software center logs
- On small root partitions, accumulated temporary delta and object files can fill /var, causing obvious low-disk-space warnings and failed app or runtime updates until the temp area is cleaned
Cache paths Kudu targets
Linux
/var/lib/flatpak/repo/tmp |
Common questions about Flatpak Repo Temp
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Available on Windows, macOS, and Linux. No account required, no feature gates, no telemetry without consent. All cleaning targets are open source and community-auditable.