nixos/system/boot/luksroot.nix: cryptsetup-askpass never exits

[blackxored]

Nixpkgs version

• Stable (25.05)

Describe the bug

Since a few months, this script is not correctly exiting or triggering a state that it did before where you could unlock remotely. The unlock still goes through, but it hangs like this:

Passphrase for /dev/disk/by-partlabel/disk-one-luks: 
Waiting 10 seconds for LUKS to request a passphrase.........

I believe this is because of the change that was made that emits "Exiting shell".

Steps to reproduce

Have boot.initrd.network.ssh enabled with either shell = "/bin/cryptsetup-askpass" or a postCommand that appends to cryptsetup-askpass to /root.profile.

Run:

1. echo -n "<passphrase>" | ssh <host> - errors out, does not unlock disk, it used to
2. echo "<passphrase>" | ssh <host> - does unlock disk, but command never exits

Expected behaviour

I would expect the disk to be unlocked with the correct passphrase and the remote command to exit after 10 secs

Screenshots

No response

Relevant log output

Additional context

No response

System metadata

• system: "x86_64-linux"
• host os: Linux 6.12.30, NixOS, 25.11 (Xantusia), 25.11.20250528.96ec055
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.28.3
• nixpkgs: /nix/store/2q205l7a46885nq31vvji40m30bygzzj-source

Notify maintainers

Not sure where to find maintainers, pinging last 3 committers @hugolgst, @rnhmjoj, @ck3d.

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[rnhmjoj]

The change you mention is this commit: 47177c0. You could try reverting.
I have a machine with remote unlock, I'll test this soon when I update it to 25.05.