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#!/usr/bin/env bash
# Update and switch the home-manager and/or NixOS configurations.
set -euo pipefail
info() { printf '\033[1;34m==>\033[0m %s\n' "$*"; }
warn() { printf '\033[1;33m==> warning:\033[0m %s\n' "$*" >&2; }
error() { printf '\033[1;31m==> error:\033[0m %s\n' "$*" >&2; }
die() { error "$*"; exit 1; }
HOME_MANAGER_CONFIG_DIR="$HOME/.config/home-manager"
NIXOS_CONFIG_DIR="/etc/nixos"
ONLY_UPDATE_FLAKE_INPUTS=false
ONLY_SWITCH_CONFIGURATION=false
UPDATE_TARGET=""
print_usage() {
echo "Usage: $0 <home-manager|nixos|both> [--only-flake|--only-switch]"
echo ""
echo "Commands:"
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 "Options:"
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_command_line_arguments() {
while [[ $# -gt 0 ]]; do
case "$1" in
home-manager | nixos | both)
if [[ -n "$UPDATE_TARGET" ]]; then
error "only one target allowed"
print_usage
fi
UPDATE_TARGET="$1"
shift
;;
--only-flake)
ONLY_UPDATE_FLAKE_INPUTS=true
shift
;;
--only-switch)
ONLY_SWITCH_CONFIGURATION=true
shift
;;
-h | --help)
print_usage
;;
*)
error "unknown option '$1'"
print_usage
;;
esac
done
if [[ -z "$UPDATE_TARGET" ]]; then
error "no target specified"
print_usage
fi
}
update_home_manager_configuration() {
info "Updating home-manager..."
cd "$HOME_MANAGER_CONFIG_DIR"
info "Staging users/arpit/private.nix..."
git add users/arpit/private.nix -f
trap 'git rm --cached users/arpit/private.nix >/dev/null 2>&1 || true' EXIT INT TERM HUP
if [[ "$ONLY_SWITCH_CONFIGURATION" == false ]]; then
info "Running nix flake update..."
nix flake update
fi
if [[ "$ONLY_UPDATE_FLAKE_INPUTS" == false ]]; then
info "Running home-manager switch..."
home-manager switch --flake "$HOME_MANAGER_CONFIG_DIR#arpit"
fi
info "Unstaging users/arpit/private.nix..."
git rm --cached users/arpit/private.nix
trap - EXIT INT TERM HUP
info "home-manager update complete"
}
update_nixos_configuration() {
info "Updating NixOS..."
sudo -v
cd "$NIXOS_CONFIG_DIR"
info "Staging hardware-configuration.nix..."
git add hardware-configuration.nix -f
trap 'git rm --cached hardware-configuration.nix >/dev/null 2>&1 || true' EXIT INT TERM HUP
if [[ "$ONLY_SWITCH_CONFIGURATION" == false ]]; then
info "Running nix flake update..."
nix flake update
fi
if [[ "$ONLY_UPDATE_FLAKE_INPUTS" == false ]]; then
info "Running nixos-rebuild switch..."
sudo nixos-rebuild switch
fi
info "Unstaging hardware-configuration.nix..."
git rm --cached hardware-configuration.nix
trap - EXIT INT TERM HUP
info "NixOS update complete"
}
parse_command_line_arguments "$@"
case "$UPDATE_TARGET" in
home-manager)
update_home_manager_configuration
;;
nixos)
update_nixos_configuration
;;
both)
update_nixos_configuration
update_home_manager_configuration
;;
esac
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