mirror of
https://github.com/nix-community/disko
synced 2024-11-10 06:14:14 +00:00
139 lines
3.4 KiB
Bash
Executable file
139 lines
3.4 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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readonly libexec_dir="${0%/*}"
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# a file with the disko config
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declare disko_config
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# mount was chosen as the default mode because it's less destructive
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mode=mount
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nix_args=()
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showUsage() {
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cat <<USAGE
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Usage: $0 [options] disk-config.nix
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or $0 [options] --flake github:somebody/somewhere#disk-config
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With flakes, disk-config is discovered first under the .diskoConfigurations top level attribute
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or else from the disko module of a NixOS configuration of that name under .nixosConfigurations.
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Options:
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* -m, --mode mode
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set the mode, either format, mount or disko
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format: create partition tables, zpools, lvms, raids and filesystems
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mount: mount the partition at the specified root-mountpoint
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disko: first unmount and destroy all filesystems on the disks we want to format, then run the create and mount mode
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* -f, --flake uri
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fetch the disko config relative to this flake's root
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* --arg name value
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pass value to nix-build. can be used to set disk-names for example
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* --argstr name value
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pass value to nix-build as string
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* --root-mountpoint /some/other/mnt
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where to mount the device tree (default: /mnt)
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* --dry-run
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just show the path to the script instead of running it
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* --no-deps
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avoid adding another dependency closure to an in-memory installer
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requires all necessary dependencies to be available in the environment
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* --debug
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run with set -x
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USAGE
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}
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abort() {
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echo "aborted: $*" >&2
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exit 1
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}
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## Main ##
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[[ $# -eq 0 ]] && {
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showUsage
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exit 1
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}
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--debug)
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set -x
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;;
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-m | --mode)
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mode=$2
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shift
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;;
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-f | --flake)
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flake=$2
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shift
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;;
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--argstr | --arg)
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nix_args+=("$1" "$2" "$3")
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shift
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shift
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;;
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--help)
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showUsage
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exit 0
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;;
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--dry-run)
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dry_run=y
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;;
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--root-mountpoint)
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nix_args+=(--argstr rootMountPoint "$2")
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shift
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;;
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--no-deps)
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nix_args+=(--arg noDeps true)
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;;
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--show-trace)
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nix_args+=("$1")
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;;
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*)
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if [ -z ${disko_config+x} ]; then
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disko_config=$1
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else
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showUsage
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exit 1
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fi
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;;
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esac
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shift
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done
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if ! { [[ $mode = "format" ]] || [[ $mode = "mount" ]] || [[ $mode = "disko" ]] || [[ $mode = "create" ]] || [[ $mode = "zap_create_mount" ]] ; }; then
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abort "mode must be either format, mount or disko"
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fi
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if [[ -n "${flake+x}" ]]; then
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if [[ $flake =~ ^(.*)\#([^\#\"]*)$ ]]; then
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flake="${BASH_REMATCH[1]}"
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flakeAttr="${BASH_REMATCH[2]}"
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fi
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if [[ -z "${flakeAttr-}" ]]; then
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echo "Please specify the name of the NixOS configuration to be installed, as a URI fragment in the flake-uri."
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echo "For example, to use the output diskoConfigurations.foo from the flake.nix, append \"#foo\" to the flake-uri."
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exit 1
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fi
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nix_args+=("--arg" "flake" "$flake")
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nix_args+=("--argstr" "flakeAttr" "$flakeAttr")
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nix_args+=(--extra-experimental-features flakes)
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elif [[ -n "${disko_config+x}" ]] && [[ -e "$disko_config" ]]; then
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nix_args+=("--arg" "diskoFile" "$disko_config")
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else
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abort "disko config must be an existing file or flake must be set"
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fi
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# The "--impure" is still pure, as the path is within the nix store.
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script=$(nix-build "${libexec_dir}"/cli.nix \
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--no-out-link \
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--impure \
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--argstr mode "$mode" \
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"${nix_args[@]}"
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)
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if [[ -n "${dry_run+x}" ]]; then
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echo "$script"
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else
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exec "$script"
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fi
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