emacs-project failed to build

[abeforgit]

I get a hash-mismatch when trying to update my nixos config (flake-based).

error: hash mismatch in fixed-output derivation '/nix/store/zr7niwxxr530xsf8g743n1q60s5286yw-project-0.8.1.tar.drv':
         specified: sha256-yDgyXpEHWHDnrqne2meSmSm2y1kZdz+8LZuAqOWaf/Q=
            got:    sha256-M7BzLw2jO0LZRDsSLGLGmurnRUoO9Cr6hQxSGDHSUmA=

Using the master branch of nix-doom-emacs and following nixos-unstable for nixpkgs.

Any idea where this would originate? And can I override it somewhere? I've been using nix for a couple of months now, which in nix-land means absolute beginner 😅

[abeforgit]

Of course, right after I post this, the issue resolves itself by removing the flake.lock and trying again...