cue eval -t env=staging -t name=bar
cmp stdout expect-stdout

-- expect-stdout --
var: {
    env:  "staging"
    name: "bar"
}
-- tags.cue --
package tags


var: env: "prod" | "staging" @tag(env,short=prod|staging)
var: name: string @tag(name)

// This is prohibited as for now.
// foo: [string]: string @tag(all)
// foo: bar: string