cue-lang/cue v0.11.0-alpha.1

on GitHub

This release includes a new matchN built-in validator, many fixes for the new evaluator, and a significant amount of work on JSON Schema.

Evaluator

A number of crashes, regressions, and other bugs have been fixed in the new evaluator, which can be enabled by CUE_EXPERIMENT=evalv3. For more details, see our latest performance update. Thanks to all who have tested the new evaluator and reported bugs!

CL 1198922 adds a new matchN built-in validator, necessary implement a host of validators such as the JSON Schema equivalents of not, oneOf, and anyOf. See the new how-to guide for it.

CL 1199898 relaxes the evaluator to allow referencing required fields via selectors, rather than failing like we do with optional fields. This should help with the transition of CUE schemas from regular to required fields, such as those decoded from JSON Schema.

CL 1200221 removes support for arithmetic operators on lists, and CL 1200221 teaches cue fix to rewrite most of them. We have added a doc page with more details and examples.

CL 1199684 teaches the evaluator to allow non-concrete values to be passed as parameters to certain builtin functions such as yaml.Validate.

CL 1199723 deduplicates errors when pairwise-combining them, as the duplication could result in large memory usage.

Modules

CL 1199541 wraps up the CUE modules experiment by dropping support for CUE_EXPERIMENT=modules=0, now that the new mode has been the default since CUE v0.9.0, and we are not aware of any remaining regressions.

Go API

CL 1200507 deprecates astutil.Cursor.Import, which is now superseded by astutil.Sanitize.

Encodings

A significant amount of work has gone into improving JSON Schema support, fixing many bugs and producing better CUE output, as well as leveraging the new matchN builtin. While this work is still in progress, we already expect an overall improvement compared to v0.10.0. This work will also form the basis for CUE modules for well-known services that will be published to the Central Registry.

CL 1199938 teaches the TOML decoder to produce CUE nodes with positions, allowing errors to include positions within TOML files.

CL 1199541 wraps up the new YAML decoder experiment by dropping support for CUE_EXPERIMENT=yamlv3decoder=0, allowing the 8400 lines of code in internal/third_party/yaml to be removed.

Builtins

CL 1194425 tweaks the yaml.Validate and json.Validate functions to allow non-concrete CUE values as schema parameters.

CL 1199602 adds a list.MatchN function, surfacing the matchN built-in validator for use in the JSON Schema decoder.

CL 1199881 tweaks uuid.Valid so that it is consistent with uuid.Parse in terms of what UUID formats are accepted.

cmd/cue

CL 1199634 drops support for the deprecated short form of cue cmd; users of cue foo should now call cue cmd foo.

CL 1200351 fixes a bug in cue fix where it would not operate on directories with multiple packages.

CL 1200498 fixes a bug in cue fix where added imports would end up with mangled names.

CL 1200554 teaches cue fix to work on standard input and output, like other sub-commands.