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#!/usr/bin/env bash
set -euo pipefail
readonly libexec_dir="${0%/*}"
# a file with the disko config
declare disko_config
# a flake uri, if present disko config is relative to the flake root
declare from_flake
# mount was chosen as the default mode because it's less destructive
mode=mount
nix_args=()
showUsage() {
cat <<USAGE
Usage: $0 [options] disk-config.nix
Options:
* -m, --mode mode
set the mode, either create or mount
* -f, --flake uri
fetch the disko config relative to this flake's root
* --arg name value
pass value to nix-build. can be used to set disk-names for example
* --argstr name value
pass value to nix-build as string
USAGE
}
abort() {
echo "aborted: $*" >&2
exit 1
}
## Main ##
[[ $# -eq 0 ]] && {
showUsage
exit 1
}
while [[ $# -gt 0 ]]; do
case "$1" in
-m | --mode)
mode=$2
shift
;;
-f | --flake)
from_flake="$2"
nix_args+=("--argstr" "fromFlake" "$2")
shift
;;
--argstr | --arg)
nix_args+=("$1" "$2" "$3")
shift
shift
;;
--help)
showUsage
exit 0
;;
*)
if [ -z ${disko_config+x} ]; then
disko_config=$1
else
showUsage
exit 1
fi
;;
esac
shift
done
if ! ([[ $mode = "create" ]] || [[ $mode = "mount" ]]); then
abort "mode must be either create or mount"
fi
if [[ -e "${disko_config}" ]]; then
nix_args+=("--arg" "diskoFile" "$disko_config")
elif [[ -n "${from_flake+x}" ]]; then
nix_args+=("--argstr" "diskoFile" "$disko_config")
else
abort "disko config must be an exising file of flake must be set"
fi
script=$(nix-build "${libexec_dir}"/cli.nix \
--argstr diskoFile "$disko_config" \
--argstr mode "$mode" \
"${nix_args[@]}"
)
exec "$script"
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