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#!/usr/bin/env bash
set -euo pipefail
HM_DIR="$HOME/.config/home-manager"
NIXOS_DIR="/etc/nixos"
ONLY_FLAKE=false
ONLY_SWITCH=false
TARGET=""
usage() {
echo "Usage: nix-update <home-manager|nixos|both> [--only-flake|--only-switch]"
echo ""
echo "Options:"
echo " home-manager Update and switch home-manager configuration"
echo " nixos Update and switch NixOS configuration"
echo " both Update and switch both configurations"
echo ""
echo "Flags:"
echo " --only-flake Only run nix flake update, skip switch commands"
echo " --only-switch Only run switch commands, skip nix flake update"
exit 1
}
parse_args() {
while [[ $# -gt 0 ]]; do
case "$1" in
home-manager | nixos | both)
if [[ -n "$TARGET" ]]; then
echo "Error: only one target allowed"
usage
fi
TARGET="$1"
shift
;;
--only-flake)
ONLY_FLAKE=true
shift
;;
--only-switch)
ONLY_SWITCH=true
shift
;;
-h | --help)
usage
;;
*)
echo "Error: unknown option '$1'"
usage
;;
esac
done
if [[ -z "$TARGET" ]]; then
echo "Error: no target specified"
usage
fi
}
update_home_manager() {
echo "==> Updating home-manager..."
cd "$HM_DIR"
echo " Staging modules/private..."
git add modules/private -f
if [[ "$ONLY_SWITCH" == false ]]; then
echo " Running nix flake update..."
nix flake update
fi
if [[ "$ONLY_FLAKE" == false ]]; then
echo " Running home-manager switch..."
home-manager switch --flake "$HM_DIR#arpit"
fi
echo " Unstaging modules/private..."
for f in modules/private/*.nix; do
[[ "$f" == *.example.nix ]] || git rm --cached "$f"
done
echo "==> home-manager update complete"
}
update_nixos() {
echo "==> Updating NixOS..."
sudo -v
cd "$NIXOS_DIR"
echo " Staging hardware-configuration.nix..."
git add hardware-configuration.nix -f
if [[ "$ONLY_SWITCH" == false ]]; then
echo " Running nix flake update..."
nix flake update
fi
if [[ "$ONLY_FLAKE" == false ]]; then
echo " Running nixos-rebuild switch..."
sudo nixos-rebuild switch
fi
echo " Unstaging hardware-configuration.nix..."
git rm --cached hardware-configuration.nix
echo "==> NixOS update complete"
}
parse_args "$@"
case "$TARGET" in
home-manager)
update_home_manager
;;
nixos)
update_nixos
;;
both)
update_nixos
update_home_manager
;;
esac
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