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# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This file builds a wrapper script called by Nixery to ask for the
# content information for a given image.
#
# The purpose of using a wrapper script is to ensure that the paths to
# all required Nix files are set correctly at runtime.
{ pkgs ? import <nixpkgs> {} }:
pkgs.writeShellScriptBin "nixery-prepare-image" ''
exec ${pkgs.nix}/bin/nix-build \
--show-trace \
--no-out-link "$@" \
--argstr loadPkgs ${./load-pkgs.nix} \
${./prepare-image.nix}
''
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