RFR: 8326960: GHA: RISC-V sysroot cannot be debootstrapped due to ongoing Debian t64 transition

[Fei Yang]

On Thu, 21 Mar 2024 15:33:21 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Debian "unstable" is currently undergoing t64 (hello, Y2038) transition, which breaks "sid" repo that we use for debootstrapping RISC-V very often. This is seen across multiple repositories, and requires everyone to look through GHA failures all the time. This PR tries to fix this: if debootstrap for "sid" repos fails, the build for that arch would not continue. IMO, it is a better compromise for current situation. We will flip back to expecting the debootstrap to complete well after either t64 transition finishes, or we switch to more stable Debian repo once it graduates.
> 
> Additional testing:
>  - [x] GHA

LGTM. Since debian SID (aka Unstable) is not ensured to be debootstrappable, I think it's good to have such a compromise before we have the first debian release for riscv64. We will do daily build locally for the affected jdk repos during this t64 transition period.

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Marked as reviewed by fyang (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18435#pullrequestreview-1953818946