Use XZ RPM compression during rpmrebuild

[n-nagornyi]

37dd08c that introduced rpmrebuild for 256bit digests brought a side effect: zstd RPM compression which is incompatible with Amazon Linux 2.

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[henry118]

This patch looks reasonable to me.

@n-nagornyi can you confirm:

1. The updated RPM correctly installs on AL2; and
2. The updated RPM preserves the SHA-256 digest (which was why Use rpmrebuild instead of fpm to rebuild rpm packages #1612 introduced rpmrebuild)

Thanks.

[n-nagornyi]

1. Yes, the packages install on AL2.
2. Yes, see the rpm output.

% rpm -qp --queryformat '%{SHA256HEADER}\n' nvidia-container-toolkit/dist/centos7/x86_64/nvidia-container-toolkit-1.19.1-1.x86_64.rpm
42a2ee59156d6cfac44e6fb6b86f11a5cc6d65b4db56502fa639b83df9560ace

% rpm -Kv nvidia-container-toolkit/dist/centos7/x86_64/nvidia-container-toolkit-1.19.1-1.x86_64.rpm
nvidia-container-toolkit/dist/centos7/x86_64/nvidia-container-toolkit-1.19.1-1.x86_64.rpm:
    Header SHA256 digest: OK
    Header SHA1 digest: OK
    Payload SHA256 digest: OK
    MD5 digest: OK

How can we proceed with packaging and signing the fixed version for Amazon Linux 2? Would it be possible to replace existing 1.19.0 and 1.19.1 packages or we have to wait for 1.20.0 release?

[henry118]

Would it be possible to replace existing 1.19.0 and 1.19.1 packages or we have to wait for 1.20.0 release?

We are actively working on 1.20 release. please use 1.20 as the fixed version.

[cdesiniotis]

/ok to test f2c2422

[cdesiniotis]

@n-nagornyi from https://docs.aws.amazon.com/AL2/latest/relnotes/relnotes-20251014.html it appears Amazon Linux 2 has reached end-of-life. Just curious why you are still looking to package new versions of NVIDIA Container Toolkit for Amazon Linux 2?

[n-nagornyi]

We still need AL2 support for some time until full migration to AL2023.

When approximately can we expect 1.20.0 release?