Can't understand how to read file

[cueckoo]

Originally opened by @selfuryon in cuelang/cue#886

Hello!
I found struct Read in file package, but I can't understand how to use it

test.txt

File content

main.cue

package main

import (
    "tool/file"
)

let ca = file.Read & {
    filename: "test.txt"
    contents: string
}

test: {
    contents: ca.contents
}

attempt:

λ cue eval
test: {
    contents: string
}

[cueckoo]

Original reply by @mpvl in cuelang/cue#886 (comment)

Basically, anything in the tool directory is intended to be interpreted by cue cmd (see cue help cmd). To normal CUE this is just data. These methods are designed to be "dynamic" and thus are not hermetic and not suitable for normal CUE evaluation.

Note, though, that we are considering allowing statically importing non-CUE files, either through the import mechanism or through a special embed form.

[cueckoo]

Original reply by @selfuryon in cuelang/cue#886 (comment)

Thanks!

[jzelinskie]

Note, though, that we are considering allowing statically importing non-CUE files, either through the import mechanism or through a special embed form.

Is there an issue I can subscribe to for this?

[myitcv]

It's on my list to write up the embed proposal, @jzelinskie. Will try to remember to CC you that.