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Something like that would be more than useful. Even in development process I want to be able to compare export or eval results at each change. I use a pipe through |
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This would be great. I like to commit materialized json files to git, and non-deterministic order ruins diffs. I work around it with graphql, but would rather not have to. |
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It's more of a topological sort. It seems deterministic, that given the same inputs, the same outputs are generated. Agreed that small changes to CUE can have significant diffs in a json or yaml export. |
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Canonical JSON creates deterministic ordering on JSON documents, primarily used for consistent hashing, so that equivalent documents are "sorted" resulting in the same signature or hash.
This topic came up in in-toto/in-toto-golang#129, can CUE validate that a JSON document is in canonical form. I wonder if it also applies to Kubernetes ConfigMaps where the contents of the data section are created by CUE. In theory Kubernetes could see a different ConfigMap despite having the "same" contents.
CUE does not have any guarantees on field order, though they tend to be topological in practice. It could be useful to have a canonical output mode for when signing or hashing is required.
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