{ lib, pkgs, ... }: pkgs.writeScriptBin "genid" '' #! /bin/sh # usage: genid NAME set -euf export PATH=${lib.makeSearchPath "bin" (with pkgs; [ bc coreutils ])} name=$1 hash=$(printf %s "$name" | sha1sum | cut -d\ -f1 | tr a-f A-F) echo " min=2^24 # bigger than nobody and nogroup, see <nixos/modules/misc/ids.nix> # and some spare for stuff like lxd. max=2^32 # see 2^(8*sizeof(uid_t)) ibase=16 ($hash + min) % max " | bc ''