add cue as native data source for gomplate

[kghenderson]

Is your feature request related to a problem? Please describe.
gomplate is a handy utility to process text/templates at command line without needing to compile to go.
this is very useful for simple client-side template generations.
https://gomplate.ca/
https://github.com/hairyhenderson/gomplate

gomplate takes a template definition and structured data file (json/yaml) and produces the output,
i'd like to use cue without needing an additional output step.
more importantly, i'd like colleagues to be able to use gomplate+cue in shell scripts without needing a go compiler.

Describe the solution you'd like
CUE as a native source format to gomplate, to avoid a preliminary conversion to json/yaml.

Describe alternatives you've considered

• a pre-compilation step to convert from cue to json/yaml and then be imported

Additional context
cue imports and cue tool improvements may help with this, since this could be written as a cue tool, but really this gomplate method is much simpler for people to use.

[kghenderson]

fyi, created a mirror ticket on the gomplate site:
hairyhenderson/gomplate#1601

[mvdan]

Just so I understand the whole picture - is there a particular reason why you opened issues both in gomplate and CUE? Are there any changes that would need to happen in CUE itself?

[mvdan]

Looks like this happened upstream in hairyhenderson/gomplate#1781. Closing for now.