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nixfiles/pkgs/nixfiles/nixfiles-generate-config.sh

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#!/usr/bin/env bash
set -euo pipefail
hostname=$(hostname --short)
root=""
ngcroot=""
while [[ $# -gt 0 ]]; do
case $1 in
--root)
root=$2
ngcroot="--root ${root}"
shift
shift
;;
--hostname)
hostname=$2
shift
shift
;;
*)
echo "unknown option: $1"
exit 1
;;
esac
done
mkdir -p "${root}/etc/nixos"
if [[ ! -d "${root}/etc/nixos/.git" ]]; then
git clone https://git.clerie.de/clerie/nixfiles.git "${root}/etc/nixos"
git -C "${root}/etc/nixos" remote set-url origin gitea@git.clerie.de:clerie/nixfiles.git
fi
mkdir -p "${root}/etc/nixos/hosts/${hostname}"
nixos-generate-config ${ngcroot} --dir "${root}/etc/nixos/hosts/${hostname}"
# make sure host is added to flake.nix
if ! grep -q "${hostname} = generateNixosSystem \"${hostname}\";" "${root}/etc/nixos/flake.nix"; then
sed -i "s/\(\s*\)_iso = generateNixosSystem \"_iso\";/\1${hostname} = generateNixosSystem \"${hostname}\";\n&/g" "${root}/etc/nixos/flake.nix"
fi
sed -i "s/\%HOSTNAME\%/${hostname}/g" "${root}/etc/nixos/hosts/${hostname}/configuration.nix"
git -C "${root}/etc/nixos" add "${root}/etc/nixos/hosts/${hostname}"