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Releases: cue-lang/cue

v0.9.0-alpha.1

21 Mar 11:04
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v0.9.0-alpha.1 Pre-release
Pre-release

This release adds initial support for the CUE Central Registry (details below) and includes a number of fixes and improvements.

As a reminder: users can register their projects with Unity, our regression and performance testing setup. Unity is used to ensure that a project's CUE evaluations do not unexpectedly stop working, or regress in terms of performance. It continues to catch multiple issues with each release. Adding your project to Unity not only guarantees that we will not break your tests (if we do, we will work with you to fix your CUE code), but it also helps to improve the quality of each CUE release. Follow this link to learn more about Unity, install it, or get in touch with any questions.

Modules

This release includes experimental support for the CUE Central Registry at registry.cue.works. We have added a cue login command to log into the Central Registry via a GitHub account, and other commands know how to use these credentials when talking to the registry.

We will share more details about the Central Registry and support for other login mechanisms in the future. For now, we are looking to get early feedback.

To get started with the Central Registry, we have published a tutorial on working with modules and the central registry as well.

CL 1185280 adds cue help modules as a high-level overview of CUE modules as well.

Go API

CL 1185281 reverts a change in v0.8.0 to fix valid uses of tools/flow involving task inputs derived from the evaluation of other tasks.

CL 1185684 removes the last remaining bits of API which supported quoted identifiers, which had already been deprecated and largely unsupported for years.

cmd/cue

CL 1173100 fixes cue get go to avoid panics when dealing with vendored packages or any type aliases which refer to indirectly imported packages.

CL 1185356 tweaks cue/load so that cue fmt is able to format CUE files given directly as arguments even when they belong to different packages.

CL 1185473 deprecates the short-form cue somecmd in favor of cue cmd somecmd, as the former caused a number of bugs and slowness when working out which subcommand to execute.

Full list of changes since v0.8.0
  • internal/cueversion: bump fallbackVersion for v0.9.0-alpha.1 by @mvdan in 74fb5cf
  • cue/ast: remove ParseIdent and support for quoted identifiers by @mvdan in f8ec1f4
  • cue/ast/astutil: stop using the deprecated ast.ParseIdent by @mvdan in 35acbf4
  • cmd/cue: deprecate cue somecmd in favor of cue cmd somecmd by @mvdan in e8ecf23
  • internal/_e2e: rename CUE_LOGINS to CUE_TEST_LOGINS by @myitcv in ec655a5
  • cue/load: obey "all packages" mode when loading files by @mvdan in 623b6a8
  • cmd/cue: ignore errors on empty package directories in fmt by @mvdan in 7fcae93
  • Revert "tools/flow: check and return errors from task values" by @rogpeppe in ea385fd
  • cmd/cue: more modules help by @rogpeppe in cb121f5
  • cmd/cue: un-hide login command and update docs by @mvdan in 50ed912
  • internal/ci: do not trigger build of tip.cuelang.org by @myitcv in 4aaa2db
  • cmd/cue: find packages by canonical path in get go by @uhthomas in b648cf4
  • remove unneeded dockerignore file by @mvdan in 5489392
  • cmd/cue: various minor cleanups by @mvdan in c248f4e
  • cue: remove op type and op-token maps by @mvdan in 93b1a79
  • internal/cueversion: bump to v0.9.0-0.dev by @mvdan in a2d2085

v0.8.0

15 Mar 12:33
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This release includes experimental support for CUE Modules (more details below), as well as a number of improvements and fixes.

More CLs and refactors have also landed for the core evaluator's performance work. These aren't enabled yet as the work isn't complete; subscribe to the performance umbrella issue to read regular updates.

As a reminder: users can register their projects with Unity, our regression and performance testing setup. Unity is used to ensure that a project's CUE evaluations do not unexpectedly stop working, or regress in terms of performance. It continues to catch multiple issues with each release. Adding your project to Unity not only guarantees that we will not break your tests (if we do, we will work with you to fix your CUE code), but it also helps to improve the quality of each CUE release. Follow this link to learn more about Unity, install it, or get in touch with any questions.

Modules

This release includes experimental support for CUE modules in cmd/cue, as outlined in the updated Modules and package management proposal v3.

Alongside this release, we have published a tutorial on the new website which shows how to publish and fetch modules with a custom module registry.

We have also published the first version of the Modules reference documentation, the canonical documentation page describing how CUE modules work in detail.

Note that support for CUE modules is still experimental and subject to change, and needs to be explicitly enabled via CUE_EXPERIMENT=modules. See cue help environment for more information on the environment variables used below.

CUE maps modules to registries via $CUE_REGISTRY, which supports a simple string configuration format as well as a more detailed CUE configuration format which can be read from disk. See cue help registryconfig for more details.

The new cue mod tidy command rewrites cue.mod/module.cue in its canonical format, adds any missing module dependency requirements, and removes unused ones.

The new cue mod publish command publishes the current module to a module registry.

The new cue mod get command can add a new module dependency, update an existing one, or downgrade an existing one as long as it does not cause any conflict.

When running commands like cue export with CUE_EXPERIMENT=modules, dependencies are automatically fetched from module registries following $CUE_REGISTRY and cached on disk inside $CUE_CACHE_DIR.

CUE Language Server Protocol Implementation

This release includes the first early version of an experimental Language Server Protocol (LSP) implementation for CUE. Whilst it remains experimental, the cmd/cuepls binary is separate from cmd/cue. However at a later date it will most likely to become a subcommand of cmd/cue like cue lsp serve.

We are working on updating the VSCode plugin to use cmd/cuepls, as well as supporting an initial version of a plugin for Neovim. For JetBrains users, we are working with the author of the CUE plugin to understand how best to integrate cmd/cuepls with JetBrains.

We will share announcements once the editor integrations are ready for use, and once more LSP features beyond formatting files are available. Subscribe to the LSP announce discussion, or join us in #cuepls on CUE Slack.

Go API

Note that this version of CUE requires Go 1.21 or later, following our policy to support the latest two stable Go releases just like upstream.

The cue/load package supports the CUE Modules experiment out of the box with the environment variable CUE_EXPERIMENT=modules. Alternatively, a custom registry and authorizer can be configured with the Config.Registry field via the modconfig.NewRegistry API.

cue/load also has a new Config.Env struct field to provide the environment variables used to load CUE modules from registries. It defaults to using os.Environ.

We have also added new Go examples to the cue/load package, including an example demonstrating the use of a CUE modules registry.

CL 1173271 drops support for legacy pkg directories, which have been deprecated since the transition to a cue.mod directory in 2019.

CL 1174069 replaces a few more uses of the deprecated cue.Instance type with cue.InstanceOrValue.

CL 1175779 deprecates the FileOffset and File.Base APIs in cue/token, which were inherited from go/token but never had any effect.

Language

There are no changes to the language in this version.

Spec

CL 1173197 makes the use of the term "builtin function" consistent across the document.

Core Evaluator

CL 1173262 fixes a regression introduced by v0.7.0's upgrade to github.com/cockroachdb/apd/v3 where some arithmetic operations would result in an extra 0 digit.

Encoders

CL 1173689 fixes the YAML encoder so that strings looking like hexadecimal numbers are properly quoted.

Builtins

CL 1173735 replaces the uses of Go's net package with net/netip when dealing with IP addresses, which makes them immutable, comparable, and take less memory.

CL 1173926 adds an IPv6 API to net to check that a value is a valid IPv6 address, mirroring IPv4 and taking advantage of the switch to the Go net/netip package.

CL 1174339 fixes tool/exec so that it correctly applies env defaults in CUE values.

CL 1174623 fixes tool/exec so that it accepts env list values as documented.

cmd/cue

CL 1176194 adds a language.version field to cue.mod/module.cue to track what CUE language version a module was written for. This will become necessary to make future language changes as smooth as possible for CUE users. For example, running cue mod init or cue mod tidy with the v0.8.0 release should add language: version: "v0.8.0" when the field isn't present.

CL 1173892 adds a cue help environment section to document the environment variables used by the CLI, such as CUE_EXPERIMENT and CUE_REGISTRY.

CL 1176665 fixes cue cmd so that legacy commands always get the corresponding CUE schema unified.

CL 1177330 fixes a bug where some evaluation errors in tools/flow and cue cmd were omitted, causing unintended results.

CL 1177546 tweaks cmd/cue so that it obeys the --package flag when the output format is CUE.

Full list of changes since v0.7.1
  • internal/cueversion: bump fallbackVersion for v0.8.0 by @mvdan in 7d75741
  • cue/load: make packages specified as args work correctly by @rogpeppe in c399d88
  • internal/mod/modresolve: do not use regular field in registry config schema by @rogpeppe in d272140
  • update cuelabs.dev/oci/ociregistry to pull in fix for #2934 by @mvdan in 0e33883
  • cmd/cue: mod init should only add @v0 with the experiment by @mvdan in 24f93c9
  • cmd/cue: repurpose modinit test for language.version by @mvdan in 77741ff
  • cmd/cue: mention CUE_DEBUG in cue help environment by @rogpeppe in d5ecd6c
  • internal/mod/modresolve: fix stripPrefix for exact match by @rogpeppe in fa65317
  • internal/_e2e: remove cleanup.go and tools.go by @mvdan in ec6cc09
  • internal/e2e: join into the root Go module by @mvdan in 31e47e2
  • internal/e2e: test that we can't replace published versions by @mvdan in d1104bd
  • internal/e2e: stop creating GitHub repositories by @mvdan in ba698de
  • all: prevent tests from using the host's docker/config.json by @mvdan in d48dcbe
  • internal/cueversion: bump fallbackVersion for v0.8.0-rc.1 by @mvdan in ccb64b1
  • doc/tutorial: skip module.cue as a golden file to avoid churn by @mvdan in d97e914
  • cmd/cue: use CUE_VERSION_OVERRIDE in script tests to avoid churn by @mvdan in e529ce6
  • cmd/cue: fix "login" on a clean environment, and add tests by @mvdan in f6238e5
  • internal/cueversion: convert spaces to underscore in Go version by @rogpeppe in 0b7c434
  • cmd/cue,mod/modconfig: send Use...

v0.8.0-rc.1

13 Mar 10:18
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v0.8.0-rc.1 Pre-release
Pre-release

This release includes a number of fixes and improvements for the experimental support for CUE modules first released in v0.8.0-alpha.1.

Modules

cue mod tidy gained a --check flag, which succeeds only if the module file contains exactly the required dependencies and also contains a canonical CUE language version.

cmd/cue and cue/load now send a detailed HTTP User-Agent string to CUE registries when sending HTTP requests, including the CUE and Go versions, rather than Go's default net/http user agent string.

cmd/cue now supports CUE_DEBUG=http to print HTTP logging information to stderr in JSON format.

Local builds of cmd/cue, such as running go install ./cmd/cue, now include a proper CUE version, allowing cue mod init and cue mod tidy to insert language.version as expected.

Full list of changes since v0.8.0-alpha.5
  • internal/cueversion: bump fallbackVersion for v0.8.0-rc.1 by @mvdan in ccb64b1
  • doc/tutorial: skip module.cue as a golden file to avoid churn by @mvdan in d97e914
  • cmd/cue: use CUE_VERSION_OVERRIDE in script tests to avoid churn by @mvdan in e529ce6
  • cmd/cue: fix "login" on a clean environment, and add tests by @mvdan in f6238e5
  • internal/cueversion: convert spaces to underscore in Go version by @rogpeppe in 0b7c434
  • cmd/cue,mod/modconfig: send User-Agent header by @rogpeppe in 6db0b7f
  • internal/cueversion: new package by @rogpeppe in 5dbbbcb
  • cmd/cue: enable HTTP logging for cue login by @rogpeppe in 9f556fe
  • cmd/cue: implement cue mod tidy --check by @rogpeppe in 9789ee6
  • internal/modload: implement tidiness checker by @rogpeppe in 405511d
  • mod/modfile: check canonical language version by @rogpeppe in 2e503e0
  • internal/mod/modload: split Tidy from UpdateVersions by @rogpeppe in 0a23647
  • bump ociregistry dependency to pull in a panic fix by @mvdan in 382ea51
  • cmd/cue: implement support for HTTP logging by @rogpeppe in 9c8b09a
  • internal/httplog: new package by @rogpeppe in 893798b
  • Revert "internal/e2e: partially revert using cue mod init modpath@version" by @mvdan in b1e40ae
  • cmd/cue: use fallbackVersion when built via a directory replace by @mvdan in e54fb85
  • cmd/cue: hard-code a fallback CUE semver version by @mvdan in fc7038a
  • update golang.org/x/... dependencies for v0.8.0 by @mvdan in 6afa3ef
  • internal/ci: update the pinned Go version for v0.8 by @mvdan in a1e8429
  • internal/cuedebug: new package by @rogpeppe in 6ad495d
  • cue/load: fix race in testing by @rogpeppe in ee26ee2
  • mod/modconfig: make http transport configurable by @rogpeppe in 0ef11fc
  • internal/core/adt: set nonRooted by @mpvl in 28ae97d
  • internal/core/debug: more state in formation by @mpvl in 2273c7d
  • internal/core/adt: make runner a struct instead of func by @mpvl in 0651453
  • internal/core/adt: fix conjunct index by @mpvl in 2554094
  • internal/core/adt: implement new evaluator by @mpvl in 5f55954
  • internal/core/adt: only error if inspected node missed counters by @mpvl in c547590
  • internal/core/adt: closedness improvements by @mpvl in b7f76be
  • internal/core/adt: add lifetime check for closedness by @mpvl in cdcb6fa
  • internal/core/adt: mark functions only used in old evaluator by @mpvl in f55405b
  • internal/core/adt: exclude tests with disjunctions by @mpvl in 145b436
  • internal/core/adt: propagate closedness up by @mpvl in 9d951f6
  • internal/core/adt: introduce visual CUE debugger by @mpvl in 37c0260

v0.8.0-alpha.5

05 Mar 16:06
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v0.8.0-alpha.5 Pre-release
Pre-release

This release includes a number of fixes and improvements for the experimental support for CUE modules first released in v0.8.0-alpha.1.

Modules

A new cue mod get command is added, which can add a new module dependency, update an existing one, or downgrade an existing one as long as it does not cause any conflict.

The cue/load package has a new Config.Env struct field to provide the environment variables used to load CUE modules from registries.

A new cue help registryconfig documentation section has been added, explaining how $CUE_REGISTRY works as well as the configuration file schema it supports.

Full list of changes since v0.8.0-alpha.4

v0.8.0-alpha.4

29 Feb 15:53
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v0.8.0-alpha.4 Pre-release
Pre-release

This release includes a number of fixes and improvements for the experimental support for CUE modules first released in v0.8.0-alpha.1.

Thank you to @kharf, @mvdan, @myitcv, @nickfiggins, and @rogpeppe for contributing to this release!

Modules

The cue/load package now supports loading CUE instances using the CUE Modules experiment, which was first added to cmd/cue in v0.8.0-alpha.1.

cue/load supports the CUE Modules experiment out of the box with the environment variable CUE_EXPERIMENT=modules. Alternatively, a custom registry and authorizer can be configured with the Config.Registry field via the modconfig.NewRegistry API.

We have also added new Go examples to the cue/load package, including an example demonstrating the use of a CUE modules registry.

Other changes

CL 1177330 fixes a bug where some evaluation errors in tools/flow and cue cmd were omitted, causing unintended results.

CL 1177546 tweaks cmd/cue so that it obeys the --package flag when the output format is CUE.

Full list of changes since v0.8.0-alpha.3

v0.8.0-alpha.3

21 Feb 13:17
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v0.8.0-alpha.3 Pre-release
Pre-release

This release includes a number of fixes and improvements for the experimental support for CUE modules first released in v0.8.0-alpha.1.

Note that we skipped over v0.8.0-alpha.2 due to a minor release automation issue.

Modules

CUE_REGISTRY now supports a CUE configuration file in addition to the simple string form, which allows greater control over how to publish CUE modules as artifacts on OCI registries. This is useful when publishing to OCI registries which do not support arbitrary repository names, for example. This is not fully documented yet, but the schema for the file is available here and setting CUE_REGISTRY=file:path/to/file enables its use.

All cue subcommands should now support the modules experiment when it is enabled via CUE_EXPERIMENT=modules.

cue mod init now adds the language.version field as needed, to ensure that running cue mod tidy immediately after results in no changes.

CUE_MODCACHE has been replaced with CUE_CACHE_DIR, a parent directory to hold all cache files, much like how CUE_CONFIG_DIR already works for configuration files.

cue mod registry, a hidden command to start a local in-memory OCI registry for testing purposes, now treats repository tags as immutable to ensure published module versions cannot be modified. The "Working with a custom module registry" tutorial has been updated to use cue mod registry.

CUE Language Server Protocol Implementation

This release includes the first version of an experimental Language Server Protocol (LSP) implementation for CUE. Whilst it remains experimental, the cmd/cuepls binary is separate from cmd/cue. However at a later date it will most likely to become a subcommand of cmd/cue like cue lsp serve.

We are working on updating the VSCode plugin to use cmd/cuepls, as well as supporting an initial version of a plugin for Neovim. For JetBrains users, we are working with the author of the CUE plugin to understand how best to integrate cmd/cuepls with JetBrains.

Subscribe to the LSP announce discussion, or join us in #cuepls on CUE Slack.

Full list of changes since v0.8.0-alpha.1

v0.8.0-alpha.1

13 Feb 10:10
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v0.8.0-alpha.1 Pre-release
Pre-release

This release includes experimental support for CUE Modules (more details below), as well as a number of improvements and fixes.

More CLs and refactors have also landed for the core evaluator's performance work; they aren't enabled yet as the work isn't complete.

As a reminder: users can register their projects with Unity, our regression and performance testing setup. Unity is used to ensure that a project's CUE evaluations do not unexpectedly stop working, or regress in terms of performance. It continues to catch multiple issues with each release. Adding your project to Unity not only guarantees that we will not break your tests (if we do, we will work with you to fix your CUE code), but it also helps to improve the quality of each CUE release. Follow this link to learn more about Unity, install it, or get in touch with any questions.

Thank you to @4ad, @cedricgc, @jpluscplusm, @martingreber, @mpvl, @mvdan, @myitcv, @nickfiggins, @nnnkkk7, @rogpeppe, and @vikstrous for contributing to this release!

Modules

This release includes experimental support for CUE modules in cmd/cue, as outlined in the Modules and package management proposal. We are also working on v3 of the modules proposal docs to coincide with the release of v0.8.0.

Alongside this release, we have published a tutorial on the new website which shows how to publish and fetch modules with a custom module registry.

We have also published the first version of the Modules reference documentation, the canonical documentation page describing how CUE modules work in detail.

Note that support for CUE modules is still experimental and subject to change, and needs to be explicitly enabled via CUE_EXPERIMENT=modules. See cue help environment for more information on the environment variables used below.

The cue mod tidy command is introduced, which rewrites cue.mod/module.cue in its canonical format, adds any missing module dependency requirements, and removes unused ones.

The cue mod publish command is also added. This publishes a version of the current module to a module registry.

When running commands like cue export with CUE_EXPERIMENT=modules, dependencies are automatically fetched from module registries following $CUE_REGISTRY and cached on disk.

Note that support for fetching modules from OCI registries via cue/load isn't ready yet; support for Go library users will be announced at a later time.

Go API

Note that this version of CUE requires Go 1.21 or later, following our policy to support the latest two stable Go releases just like upstream.

CL 1173271 drops support for legacy pkg directories, which have been deprecated since the transition to a cue.mod directory in 2019.

CL 1174069 replaces a few more uses of the deprecated cue.Instance type with cue.InstanceOrValue.

CL 1175779 deprecates the FileOffset and File.Base APIs in cue/token, which were inherited from go/token but never had any effect.

Language

There are no changes to the language in this version.

Spec

CL 1173197 makes the use of the term "builtin function" consistent across the document.

Core Evaluator

CL 1173262 fixed a regression introduced by v0.7.0's upgrade to github.com/cockroachdb/apd/v3 where some arithmetic operations would result in an extra 0 digit.

Encoders

CL 1173689 fixed the YAML encoder so that strings looking like hexadecimal numbers are properly quoted.

Builtins

CL 1173735 replaces the uses of Go's net package with net/netip when dealing with IP addresses, which makes them immutable, comparable, and take less memory.

CL 1173926 adds an IPv6 API to net to check that a value is a valid IPv6 address, mirroring IPv4 and taking advantage of the switch to the Go net/netip package.

CL 1174339 fixes tool/exec so that it correctly applies env defaults in CUE values.

CL 1174623 fixes tool/exec so that it accepts env list values as documented.

cmd/cue

CL 1173892 adds a cue help environment section to document the environment variables used by the CLI, such as CUE_EXPERIMENT and CUE_REGISTRY.

CL 1176665 fixes cue cmd so that legacy commands always get the corresponding CUE schema unified.

CL 1176194 starts adding a language.version field to cue.mod/module.cue, to start tracking what CUE language version a module's config files were written for. This will become necessary to make future language changes as smooth as possible for CUE users. For example, running cue mod init or cue mod tidy with the future CUE v0.8.0 release should add language: version: "v0.8.0" when the field isn't present.

Full list of changes since v0.7.1
  • README: briefly document that we support two Go versions by @mvdan in e69d893
  • cue/interpreter/wasm: rework the way we test Wasm by @4ad in 41b9e66
  • cue/interpreter/wasm: remove Wazero global state by @4ad in 6d68b3a
  • cue/interpreter/wasm: add support for Wasm functions that take and return structs by @4ad in 2ce1036
  • cue/interpreter/wasm: add support for arbitrary types in extern attributes by @4ad in c896078
  • internal/core/runtime: expand runtime.Compile signature to accomodate non-builtins by @4ad in 063b8c1
  • cmd/cue,pkg/tool/exec: rely on cue schema for exec.Run defaults by @nickfiggins in b460e71
  • cmd/cue: unhide mod tidy and mod publish by @myitcv in d37ea66
  • internal/ci: run the end-to-end tests with -race by @mvdan in a948eb5
  • cmd/cue: add testscript for registry auth via logins.json by @mvdan in 64c5656
  • cmd/cue: fix registry client race by @rogpeppe in 3d1c0cb
  • cmd/cue: add mod registry server command by @rogpeppe in 649c7f6
  • clarify that we require Go 1.21 or later now by @mvdan in bef7c4e
  • internal/ci: upgrade Go matrix include go1.22.0 by @myitcv in 63dbc2d
  • internal/ci: use node.js 20-compatible action versions by @myitcv in 15a4b3e
  • README: simplify "install from source" instructions by @mvdan in 5037afc
  • README: add Docker badge and instructions by @mvdan in b6a6f67
  • bump cuelabs.dev/go/oci/ociregistry dependency by @mvdan in 0eb0106
  • cmd/cue: simplify exec trimming in TestX by @nnnkkk7 in eafeb11
  • pkg/path: fix package comment by @jpluscplusm in 4818cf7
  • cue/load: allow conversion of module-local paths to OS paths by @rogpeppe in 20451a6
  • cmd/cue: add test for self import in modules mode by @rogpeppe in 707c6d7
  • internal/e2e: switch all tests to cue mod publish by @mvdan in 2930a8e
  • README: remove obsolete mention of Google by @jpluscplusm in 64a117c
  • cue/load: make the tests less noisy by @mvdan in 079532c
  • cue/load: use fewer absolute paths in tests by @mvdan in a25c24b
  • cue/parser: make the example self-contained by @mvdan in fc77363
  • internal/mod/modload: fix panic on error in tidy by @rogpeppe in 3146f22
  • internal/mod: fix tidy in the presence of local code by @rogpeppe in 2a56875
  • cmd/cue: make the config directory configurable by @mvdan in 22b1ca3
  • internal/e2e: start using cue mod tidy by @mvdan in 34db9eb
  • cmd/cue: add version to module.cue file by @rogpeppe in 9ceec10
  • cue/load: fix crash when there is no module file by @rogpeppe in ec7ca0a
  • internal/e2e: start using cue mod init modpath@version by @mvdan in 7855e15
  • cue/token: deprecate base offset by @rogpeppe in b0358a6
  • cmd/cue/cmd: support major versions in module path by @rogpeppe in e8efa7e
  • internal/mod/modload: support adding language version by @rogpeppe in 2120803
  • internal/mod/modpkgload: support gen directories by @rogpeppe in c6e4adf
  • internal/e2e: tweak expected error string after the cue/load changes by @mvdan in b67300b
  • cue/load: use modpkgload to resolve dependencies by @rogpeppe in fa12218
  • cmd/cue/cmd: add (failing) submodule test by @RogP...

v0.7.1

12 Feb 15:11
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This release is a re-build of CUE v0.7.0 with Go 1.22.0 to prevent cue get go panics; see #2802.

v0.7.0

06 Dec 12:10
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This release comprises a number of bug fixes and small improvements, as well as more ground work for Modules, WebAssembly, and the core evaluator's performance refactors.

Note that v0.7 was originally planned to center around the core evaluator's performance improvements. Since those refactors are not ready, and we have other fixes and improvements we want to release, we have slightly altered the release plan accordingly. We will share more details on our next community call.

As a reminder: users can register their projects with Unity, our regression and performance testing setup. Unity is used to ensure that a project's CUE evaluations do not unexpectedly stop working, or regress in terms of performance. Unity continues to catch multiple issues with each release. Adding your project to Unity not only guarantees that we will not break your tests (if we do, we will work with you to fix your CUE code), but it also helps to improve the quality of each CUE release. Follow this link to learn more about Unity, install it, or get in touch with any questions.

Thank you to @SteVwonder, @bozaro, @cedricgc, @howardjohn, @mpvl, @mvdan, @myitcv, @nickfiggins, @rogpeppe, @rudifa, and @uhthomas for contributing to this release!

And a special thanks to all who joined the recent contributor office hours calls on our community calendar, as well as our #contributing channel on Slack! Thanks to their involvement, more issues can be investigated and fixed each release.

Go API

Note that this version of CUE requires Go 1.20 or later, per our policy to support the latest two stable Go releases just like upstream.

CL 1172105 fixes a regression introduced in v0.6.0 where calling Iterator.Selector.Index while iterating over a list would incorrectly panic.

CL 1167597 fixes cue/load so it now errors on package import cycles, following the spec.

CL 1167647 adjusts cue.Value.Decode to decode empty CUE lists into a Go interface{} as a non-nil empty slice.

CL 547369 teaches cue.Value.Decode how to decode values which aren't entirely concrete into a Go type by using cue.Value as part of the destination type.

Language

There are no changes to the language in this version.

Spec

CL 1171216 fixes two errors in a dynamic fields example.

Core Evaluator

CL 1172014 disallows the direct use of unary operators with basic types, since they would result in confusing bounds which seemed incorrect.

CL 1172013 fixes a closedness bug where close did not properly apply when used inside definitions.

CL 1172874 fixes a panic in cue export introduced by v0.6.0.

Encoders

CL 1172314 teaches encoding/protobuf to follow the field_behavior annotation marking a field as either optional or required when decoding.

Builtins

CL 1172991 adds a mustSucceed boolean parameter to tool/exec.Run, which can be set to false to allow a command to fail and set its own field success to false.

CL 557322 fixes the values of math's Log2E and Log10E constants, which were being incorrectly truncated.

cmd/cue

CLs 1170966 and 1171302 fix a number of issues in cue fmt (and by extension the cue/format package), resulting in better and more consistent formatting of CUE files.

CLs 1171292, 1171015, 1170115, and 1171971 implement a variety of improvements and bug fixes for cue get go.

CL 1172017 fixes a number of issues with the line and column positions reported by our YAML decoder, which could result in weird CUE formatting when using cue import or misleading positions being shown to the user.

CL 1169709 increases the robustness of cue export -o, which in some situations could ignore file errors or incorrectly replace an existing file without the -f flag.

CL 1173072 fixes a panic when using cue import --list with empty YAML input.

CL 1168436 updates the cue export documentation to add the missing cue and binary supported export formats.

Modules

A number of changes are included to support an experimental implementation of the proposed modules and package management support. These aren't enabled by default, and will be announced soon.

Full list of changes since v0.6.0
  • internal/ci: bump to Go 1.21.5 for the upcoming release by @mvdan in ce1ad81
  • cmd/cue: fix panic when importing empty files as a list by @uhthomas in b36b477
  • internal/core/adt: change semantics of unary_op(basictype) by @mpvl in e1ceed4
  • internal/core/adt: fix closedness bug by @mpvl in 886eefd
  • internal/core/adt: add test to prepare for fix by @mpvl in 145764d
  • CONTRIBUTING: mention the Slack channel and office hours calls by @mvdan in 16a0cda
  • pkg/tool/exec: add a Run.mustSucceed parameter by @nickfiggins in 10c4796
  • cue: explicitly document values are not safe for concurrent use by @mvdan in d805c22
  • internal/ci: bump Go and GoReleaser for v0.7.0-rc.1 by @mvdan in 8f88dcb
  • internal/slices: move from internal/mod/mvs/internal/slices by @rogpeppe in 0e51dbb
  • internal/mod/internal/par: move from internal/mod/mvs/internal/par by @rogpeppe in fe0e04a
  • internal/registrytest: do not check that dependencies exist by @rogpeppe in 99bdbad
  • internal/mod/modimports: new package by @rogpeppe in 79033c2
  • internal/core/export: fix a recent nil pointer regression by @rudifa in 141925a
  • internal/core/adt: use state directly by @mpvl in bba2263
  • internal/core/adt: expand on permutations for test by @mpvl in 596fdc9
  • internal/cuetxtar: include diff between test and fallback test by @mpvl in 6774d0d
  • internal/txtarfs: factor out from registrytest by @rogpeppe in 265a7a0
  • internal/cueimports: export API and fix for CUE syntax by @rogpeppe in 47d6dce
  • internal/cueimports: copy code from cue/load by @rogpeppe in 9e55783
  • cue/load: remove unused functionality by @rogpeppe in b727189
  • all: replace html/template by text/template by @mvdan in 361ae4f
  • encoding/protobuf: support field_behavior "required" option by @howardjohn in 80b0eee
  • cmd/cue: fix incorrect position in yaml import by @uhthomas in d97b0c3
  • all: adopt .gitignore for new delve binary naming by @mpvl in 68e9d5d
  • internal/core/adt: make ListMarker Src an expression by @mpvl in f59894c
  • internal/core/adt: changes needed for new evaluator by @mpvl in fb88beb
  • cue: don't panic on Iterator.Selector.Index with lists by @mvdan in 9dd0f82
  • cue: allow top level JSON marshalers in EncodeType by @rogpeppe in 8f796bf
  • cue: support decoding into cue.Value fields by @rogpeppe in b25fc05
  • internal/mod/mvs: discard copied par tests by @mvdan in 4e30101
  • CONTRIBUTING: fix repo reference rendering by @cedricgc in 7a4ea86
  • internal/e2e: make unique module names more robust by @mvdan in a404c89
  • cmd/cue: support optional comments in get go by @uhthomas in 67ea9cf
  • cmd/cue: ignore complex types in get go by @uhthomas in 112b0b2
  • pkg/internal/builtintest: don't print superfluous newlines by @uhthomas in 8b32c49
  • internal/tdtest: document how the name field is used by @rogpeppe in deab307
  • internal/e2e: add a test for a private github repo by @mvdan in 4d2ba88
  • internal/ci: add gcloud auth to the e2e tests by @mvdan in 95a88a5
  • CONTRIBUTING: clarify two sections by @cedricgc in d947a69
  • internal/e2e: add a "cue mod upload" end-to-end test with gcloud by @mvdan in a060f85
  • internal/e2e: rename existing testscript and add a summary by @mvdan in 4dba8dd
  • internal/e2e: tweak how we use secret env vars by @mvdan in d3efde7
  • internal/mod/modfile: ...

v0.7.0-rc.1

04 Dec 14:37
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v0.7.0-rc.1 Pre-release
Pre-release

This release comprises a number of bug fixes and small improvements, as well as more ground work for Modules, WebAssembly, and the core evaluator's performance refactors.

Note that v0.7 was originally planned to center around the core evaluator's performance improvements. Since those refactors are not ready, and we have other fixes and improvements we want to release, we have slightly altered the release plan accordingly. We will share more details on our next community call.

As a reminder: users can register their projects with unity, our regression and performance testing setup. unity is used to ensure that a project's CUE evaluations do not unexpectedly stop working, or regress in terms of performance. unity continues to catch multiple issues with each release. Adding your project to unity not only guarantees that we will not break your tests (if we do, we will work with you to fix your CUE code), but it also helps to improve the quality of each CUE release. Follow this link to learn more about Unity, install it, or get in touch with any questions.

Thank you to @SteVwonder, @bozaro, @cedricgc, @howardjohn, @mpvl, @mvdan, @myitcv, @nickfiggins, @rogpeppe, @rudifa, and @uhthomas for contributing to this release!

And a special thanks to all who joined the recent contributor office hours calls on our community calendar, as well as our #contributing channel on Slack! Thanks to their involvement, more issues can be investigated and fixed each release.

Go API

Note that this version of CUE requires Go 1.20 or later, per our policy to support the latest two stable Go releases just like upstream.

CL 1172105 fixes a regression introduced in v0.6.0 where calling Iterator.Selector.Index while iterating over a list would incorrectly panic.

CL 1167597 fixes cue/load so it now errors on package import cycles, following the spec.

CL 1167647 adjusts cue.Value.Decode to decode empty CUE lists into a Go interface{} as a non-nil empty slice.

CL 547369 teaches cue.Value.Decode how to decode values which aren't entirely concrete into a Go type by using cue.Value as part of the destination type.

Language

There are no changes to the language in this version.

Spec

CL 1171216 fixes two errors in a dynamic fields example.

Core Evaluator

CL 1172014 disallows the direct use of unary operators with basic types, since they would result in confusing bounds which seemed incorrect.

CL 1172013 fixes a closedness bug where close did not properly apply when used inside definitions.

CL 1172874 fixes a panic in cue export introduced by v0.6.0.

Encoders

CL 1172314 teaches encoding/protobuf to follow the field_behavior annotation marking a field as either optional or required when decoding.

Builtins

CL 1172991 adds a mustSucceed boolean parameter to tool/exec.Run, which can be set to false to allow a command to fail and set its own field success to false.

CL 557322 fixes the values of math's Log2E and Log10E constants, which were being incorrectly truncated.

cmd/cue

CLs 1170966 and 1171302 fix a number of issues in cue fmt (and by extension the cue/format package), resulting in better and more consistent formatting of CUE files.

CLs 1171292, 1171015, 1170115, and 1171971 implement a variety of improvements and bug fixes for cue get go.

CL 1172017 fixes a number of issues with the line and column positions reported by our YAML decoder, which could result in weird CUE formatting when using cue import or misleading positions being shown to the user.

CL 1169709 increases the robustness of cue export -o, which in some situations could ignore file errors or incorrectly replace an existing file without the -f flag.

CL 1173072 fixes a panic when using cue import --list with empty YAML input.

CL 1168436 updates the cue export documentation to add the missing cue and binary supported export formats.

Modules

A number of changes are included to support an experimental implementation of the proposed modules and package management support. These aren't enabled by default, and will be announced soon.

Full list of changes since v0.6.0
  • cmd/cue: fix panic when importing empty files as a list by @uhthomas in b36b477
  • internal/core/adt: change semantics of unary_op(basictype) by @mpvl in e1ceed4
  • internal/core/adt: fix closedness bug by @mpvl in 886eefd
  • internal/core/adt: add test to prepare for fix by @mpvl in 145764d
  • CONTRIBUTING: mention the Slack channel and office hours calls by @mvdan in 16a0cda
  • pkg/tool/exec: add a Run.mustSucceed parameter by @nickfiggins in 10c4796
  • cue: explicitly document values are not safe for concurrent use by @mvdan in d805c22
  • internal/ci: bump Go and GoReleaser for v0.7.0-rc.1 by @mvdan in 8f88dcb
  • internal/slices: move from internal/mod/mvs/internal/slices by @rogpeppe in 0e51dbb
  • internal/mod/internal/par: move from internal/mod/mvs/internal/par by @rogpeppe in fe0e04a
  • internal/registrytest: do not check that dependencies exist by @rogpeppe in 99bdbad
  • internal/mod/modimports: new package by @rogpeppe in 79033c2
  • internal/core/export: fix a recent nil pointer regression by @rudifa in 141925a
  • internal/core/adt: use state directly by @mpvl in bba2263
  • internal/core/adt: expand on permutations for test by @mpvl in 596fdc9
  • internal/cuetxtar: include diff between test and fallback test by @mpvl in 6774d0d
  • internal/txtarfs: factor out from registrytest by @rogpeppe in 265a7a0
  • internal/cueimports: export API and fix for CUE syntax by @rogpeppe in 47d6dce
  • internal/cueimports: copy code from cue/load by @rogpeppe in 9e55783
  • cue/load: remove unused functionality by @rogpeppe in b727189
  • all: replace html/template by text/template by @mvdan in 361ae4f
  • encoding/protobuf: support field_behavior "required" option by @howardjohn in 80b0eee
  • cmd/cue: fix incorrect position in yaml import by @uhthomas in d97b0c3
  • all: adopt .gitignore for new delve binary naming by @mpvl in 68e9d5d
  • internal/core/adt: make ListMarker Src an expression by @mpvl in f59894c
  • internal/core/adt: changes needed for new evaluator by @mpvl in fb88beb
  • cue: don't panic on Iterator.Selector.Index with lists by @mvdan in 9dd0f82
  • cue: allow top level JSON marshalers in EncodeType by @rogpeppe in 8f796bf
  • cue: support decoding into cue.Value fields by @rogpeppe in b25fc05
  • internal/mod/mvs: discard copied par tests by @mvdan in 4e30101
  • CONTRIBUTING: fix repo reference rendering by @cedricgc in 7a4ea86
  • internal/e2e: make unique module names more robust by @mvdan in a404c89
  • cmd/cue: support optional comments in get go by @uhthomas in 67ea9cf
  • cmd/cue: ignore complex types in get go by @uhthomas in 112b0b2
  • pkg/internal/builtintest: don't print superfluous newlines by @uhthomas in 8b32c49
  • internal/tdtest: document how the name field is used by @rogpeppe in deab307
  • internal/e2e: add a test for a private github repo by @mvdan in 4d2ba88
  • internal/ci: add gcloud auth to the e2e tests by @mvdan in 95a88a5
  • CONTRIBUTING: clarify two sections by @cedricgc in d947a69
  • internal/e2e: add a "cue mod upload" end-to-end test with gcloud by @mvdan in a060f85
  • internal/e2e: rename existing testscript and add a summary by @mvdan in 4dba8dd
  • internal/e2e: tweak how we use secret env vars by @mvdan in d3efde7
  • internal/mod/modfile: add copyright message by @rogpeppe in f9c8d98
  • cmd/cue: cue mod upload...