Wow, thanks for the link! I’m a huge Flatpak fan and always thought they were awesome. I still do, but a lot of the issues in that blog were news to me. Thanks for sharing, it was a really good read!
Objectively, they all frustrate validation the same. When comparing with a SLSA3-compliant setup where every installed artifact has a signed checksum in a signed bundle from a signed resource on a signed repository, and the endpoint to this is readily available from something like authenticated SNMP into the single source of truth, they all tends to compare poorly.
The chart below completely ignores that Debs are consolidated into a single source of truth as well, and I feel violating SSoT should cost significantly because of dependency holes when artifact registry is incomplete, but SLSA doesn’t care about that part.
Ecosystem / Format
Estimated SLSA Level
Update Reliability / Model
Trust Chain & Provenance Comments
(withheld)
3–4
Very high; repo-based, transactional updates
Strong: signed packages + signed repo metadata + central DB; distros enforce reproducible builds.
Out of curiosity, why avoid Flatpak? I get snap or AppImage, but Flatpak is generally great.
Not parent poster, but this is a detailed explanation for the big ideas.
Wow, thanks for the link! I’m a huge Flatpak fan and always thought they were awesome. I still do, but a lot of the issues in that blog were news to me. Thanks for sharing, it was a really good read!
Objectively, they all frustrate validation the same. When comparing with a SLSA3-compliant setup where every installed artifact has a signed checksum in a signed bundle from a signed resource on a signed repository, and the endpoint to this is readily available from something like authenticated SNMP into the single source of truth, they all tends to compare poorly.
The chart below completely ignores that Debs are consolidated into a single source of truth as well, and I feel violating SSoT should cost significantly because of dependency holes when artifact registry is incomplete, but SLSA doesn’t care about that part.
Man, I really need to check out “(withheld)”
Seriously though, nice table!
the table reads like AI output