96 lines
3.3 KiB
Bash
Executable file
96 lines
3.3 KiB
Bash
Executable file
#!/usr/bin/env bash
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# The NixOS Operations Script (NOS) is a wrapper script for nixos-rebuild and Flake-based configurations.
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# It handles pulling the latest version of your repository using Git, running system updates, and pushing changes back up.
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# Configuration parameters
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operation="switch" # The nixos-rebuild operation to use
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hostname=$(/run/current-system/sw/bin/hostname) # The name of the host to build
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flakeDir="${FLAKE_DIR}" # Path to the flake file (and optionally the hostname)
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update=false # Whether to update and commmit flake.lock
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user=$(/run/current-system/sw/bin/whoami) # Which user account to use for git commands
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remainingArgs="" # All remaining arguments that haven't yet been processed (will be passed to nixos-rebuild)
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function usage() {
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echo "The NixOS Operations Script (NOS) is a nixos-rebuild wrapper for system maintenance."
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echo ""
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echo "Running the script with no parameters performs the following operations:"
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echo " 1. Pull the latest version of your Nix config repository"
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echo " 2. Run 'nixos-rebuild switch'."
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echo ""
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echo "Advanced usage: nixos-operations-script.sh [-h | --hostname hostname-to-build] [-o | --operation operation] [-f | --flake path-to-flake] [extra nixos-rebuild parameters]"
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echo ""
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echo "Options:"
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echo " --help Show this help screen."
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echo " -f, --flake [path] The path to your flake.nix file (defualts to the FLAKE_DIR environment variable)."
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echo " -h, --hostname [hostname] The name of the host to build (defaults to the current system's hostname)."
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echo " -o, --operation [operation] The nixos-rebuild operation to perform (defaults to 'switch')."
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echo " -U, --update Update and commit the flake.lock file."
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echo " -u, --user [username] Which user account to run git commands under (defaults to the user running this script)."
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echo ""
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exit 0
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}
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# Argument processing logic shamelessly stolen from https://stackoverflow.com/questions/192249/how-do-i-parse-command-line-arguments-in-bash
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POSITIONAL_ARGS=()
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--flake|-f)
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flakeDir="$2"
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shift
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shift
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;;
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--hostname|-h)
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hostname="$2"
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shift
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shift
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;;
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--update|--upgrade|-U)
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update=true
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shift
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;;
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--operation|-o)
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operation="$2"
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shift
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shift
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;;
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--user|-u)
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user="$2"
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shift
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shift
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;;
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--help)
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usage
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;;
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*)
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POSITIONAL_ARGS+=("$1") # save positional arg
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shift
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;;
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esac
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done
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remainingArgs=${POSITIONAL_ARGS[@]}
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set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
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if [ -z "${flakeDir}" ]; then
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echo "Flake directory not specified. Use '--flake <path>' or set \$FLAKE_DIR."
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exit 1
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fi
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cd $flakeDir
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echo "Pulling the latest version of the repository..."
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/run/wrappers/bin/sudo -u $user git pull
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if [ $update = true ]; then
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echo "Updating flake.lock..."
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/run/wrappers/bin/sudo -u $user nix flake update --commit-lock-file && /run/wrappers/bin/sudo -u $user git push
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else
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echo "Skipping 'nix flake update'..."
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fi
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options="--flake ${flakeDir}#${hostname} ${remainingArgs} --use-remote-sudo --log-format multiline-with-logs"
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echo "Running this operation: nixos-rebuild ${operation} ${options}"
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/run/wrappers/bin/sudo -u $user /run/current-system/sw/bin/nixos-rebuild $operation $options
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exit 0
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