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First large step towards backwards compatibility guarantee
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@cueckoo cueckoo released this 03 Jul 11:13
· 2212 commits to master since this release
v0.3.0
4476060

After a long road, we have now an official v0.3.0 release. Aside from implementing some important changes to the language (see release notes), it prepares CUE for exciting new features such as the query and policy extensions and other language extensions as well as much better performance.

The focus will now be to get to language stability and a v1.0.0 release.

With this release will also come a different approach to versioning leading up to the v1.0.0 release. The goal is to get to the stability guarantee for the language first, then the API and tooling. Up to v1.0.0, version increments will have the following meanings:

  • minor (_.x._)
    • backwards incompatible changes
    • bug fixes with notable backwards incompatible changes
    • large new features
  • patch (_._.x)
    • bug and spec conformance fixes
    • new features

We plan to get the few small remaining backwards incompatible languages chances out as soon as possible. To make the transition as simple as possible, we aim to put possible impactful bug fixes in small releases, so that users get a chance to get used to them. And, of course, we plan to make any necessary transitions as smooth as possible using cue fix aids when possible.

Note that to smooth out any transition, users can register their repos at https://github.com/cue-sh/unity. This is used to ensure that their CUE evaluations will not unexpectedly stop working.

API

encoding/protobuf/jsonpb

Protobuf defines its own, somewhat peculiar, mapping to JSON. This package provides a way to interpret JSON for such mappings, given a CUE schema. This is a first step towards broader Protobuf value support.

cue.Selector

Several new features have been added to Selector, including the possibility to query whether a selector is a regular string field and the ability to create a Selector form an ast.Label.

Value.Attributes

Value has been extended with a more extensive API to retrieve attributes.

Value.Subsume

Now allows raw (CUE-native) subsumption, instead of just the "Schema" or "Data" interpretations.

Value.FillPath

For completeness, note that beta.8 already introduced FillPath.

Changelog

4476060 cmd/cue/cmd: load import dependencies of tool files
276e164 cue/literal: expose some internal data
c24a281 cue/load: drop out-of-date comment about type of value in Overlay map
792da39 cue: add function for Value.Attributes()
1ea47e0 cue: allow raw subsumption, taking defaults into account
20a4878 cue: expose some path utilities
48f2a22 doc/cmd: refer people to cue help for now
aa99414 doc: fix various typos
2115955 encoding/openapi: correctly extract type in the presence of null
a1903ca encoding/openapi: dedup conjuncts and disjuncts
3701bef encoding/protobuf/jsonpb: add Rewrite* for interpreting JSON in PB terms
96e84eb tools/flow/testdata: add test with package dependency

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