mirror of
https://github.com/nix-community/disko
synced 2024-09-20 05:51:54 +00:00
90f24aef89
The script is generated by calling `nix-build` on the `cli.nix` file. This fails on systems, which have the nix option pure_eval set, as nix refuses to evaluate an untracked file. This would normally be impure, but in this case the file is supplied in the same nix store path, i.e. it's not referencing foreign files. Thus adding the `--impure` argument should leave the nix call in fact still pure.
130 lines
2.8 KiB
Bash
Executable file
130 lines
2.8 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
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Options:
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* -m, --mode mode
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set the mode, either create, mount, zap_create_mount or disko
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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 /mnt
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where to mount the device tree
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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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* --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 = "create" ]] || [[ $mode = "mount" ]] || [[ $mode = "zap_create_mount" ]] || [[ $mode = "disko" ]]; }; then
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abort "mode must be either create, mount, zap_create_mount or disko"
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fi
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if [[ -n "${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 withing 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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