cue cmd -t greeting=hello prefix

-- cue.mod/module.cue --
module: "mod.com"
-- my.cue --
package tools

msg: string @tag(greeting)

-- my_tool.cue --
package tools

import (
	"tool/cli"
)

greeting: string @tag(greeting)

command: prefix: {
	p1: cli.Print & {
		text: greeting
	}
    salutation: string @tag(greeting)
	p2: cli.Print & {
		text: salutation
	}
	p3: cli.Print & {
		text: msg @tag(greeting)
	}
}