-- in.cue --
first: {
    out: [1, 2]
}
ignore: {
    x: 1
    y: a.c
}
middle: {
    for x in first.out {
        ignore.y

        "la\(x)": ignore & {
            seq: x+1
            val: "foo\(x)"
            out: ignore.x
        }
    }
}

a: {
    b: [ for x in middle { x } ]
    c: {}
}
-- out/dependencies/field --
middle
-- out/dependencies/all --
middle
-- out/dependencies/dynamic --
middle
middle.la1
middle.la2