v0.8.0-alpha.4

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

• internal/e2e: partially revert using cue mod init modpath@version by @mvdan in 94a444f
• cmd/cue: support --package flag when output is CUE by @myitcv in 93acaa3
• cue/load: add runnable example for external modules by @rogpeppe in cc98a77
• mod/modconfig: factor out from cmd/cue by @rogpeppe in 59e6fd0
• mod/...: mark as experimental by @rogpeppe in 3210353
• mod/modcache: move from internal/mod/modcache by @rogpeppe in 4232562
• internal/par: move from internal/mod/internal/par by @rogpeppe in d1fba4f
• mod/modregistry: move from internal/mod/modregistry by @rogpeppe in aabff10
• mod/modfile: move from internal/mod/modfile by @rogpeppe in 8533c7d
• mod/module: move from internal/mod/module by @rogpeppe in 2727766
• cue: fix typos in the Hid function documentation by @kharf in 723438a
• cue/load: add a runnable package example by @mvdan in 5b4a581
• internal/ci: fix reference to tool/file.RemoveAll by @mvdan in d42ab3d
• tools/flow: check and return errors from task values by @nickfiggins in 9ef35eb
• cmd/cue: stop trying to set $HOME in script_test.go by @mvdan in ff8d497
• cmd/cue: skip the logins.json authorizer if no file is found by @mvdan in 32a72ae
• bump ociregistry module version by @rogpeppe in 30cae5b