How to handle a subcommand which prompts for user input

[mike-lloyd03]

I trying to integrate a project of mine with direnv. It is a simple secrets storage tool. When the user runs:

rudric env | source

It reads from a .renv file in the source directory, decrypts the secrets that are specified there from the user's vault, and formats them into shell commands which can be passed to source.

The output would look like this:

export 'VARIABLE1'='variable1text'
export 'VARIABLE2'='variable2text'

I'm trying to find a clean way to set this up for direnv. I've done something like this:

.envrc:

$(rudric env direnv)

This would output the necessary strings for direnv to source the variables. However, the user is prompted to enter his password when this command is run. When the enter password prompt appears, the user is not able to type anything in and the command fails.

By default, the library I'm using (dialoguer) interacts on stderr.

How can I get direnv to allow the user to input text when sourcing the .envrc file?