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#! /bin/sh
# usage: genid NAME
set -euf
name=$1
hash=$(printf %s "$name" | sha1sum | cut -d\ -f1 | tr a-f A-F)
echo "
min=2^16 # bigger than nobody and nogroup, see <nixos/modules/misc/ids.nix>
max=2^32 # see 2^(8*sizeof(uid_t))
ibase=16
($hash + min) % max
" | bc
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