feat(libstore): support S3 object versioning via versionId parameter #14274
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S3 buckets support object versioning to prevent unexpected changes, but Nix previously lacked the ability to fetch specific versions of S3 objects. This adds support for a `versionId` query parameter in S3 URLs, enabling users to pin to specific object versions: ``` s3://bucket/key?region=us-east-1&versionId=abc123 ```
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Motivation
S3 buckets support object versioning to prevent unexpected changes,
but Nix previously lacked the ability to fetch specific versions of
S3 objects. This adds support for a
versionIdquery parameter in S3URLs, enabling users to pin to specific object versions:
Context
Fixes: #13955
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