Support alternative syntax for specifying inline environment

[sh0rez]

Regular (static and single-inline) environments are specified like so:

tk show environments/default

Given environments/default/main.jsonnet returns multiple tanka.dev/Environment objects, the following is required:

tk show environments/default --name=myFancyEnv

While this usually works fine, it makes some automation much harder than needed. Previously this was possible:

for i in $(tk env list --names); do tk diff $i; done

This would have given you a diff of all environments. But it is impossible / unnecessarily hard to handle the flag case because we only know once it failed.

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A solution to that would be to incorporate the name into the existing argument, maybe like so:

tk show environments/default:myFancyEnv

In return we could allow tk env list to return such strings, so above automation works again.

I propose to add that as an alternative way solely handled in the cmd/tk package for now. Given the feature is experimental anyawys, we can iterate on this further.

//cc @Duologic wdyt?

[Duologic]

I'm not opossed to it, most if not all use cases of looping over environments can be covered by tk env list --json imo. Is there a request or specific reason that pushes this idea forward?

[Duologic]

Only suggestion I can come up with: Maybe if we just replace --names with something like --identifiers to make it clear that it is not only representing the name.

[stale[bot]]

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[Duologic]

That doesn't seem related @James-Riordan, please move this to the discussions tab.