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path: root/tools/nixery/build-image/default.nix
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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 the tool used to calculate layer distribution and
# moves the files needed to call the Nix builds at runtime in the
# correct locations.

{ buildGoPackage, lib, nix, writeShellScriptBin }:

let
  group-layers = buildGoPackage {
    name = "group-layers";
    goDeps = ./go-deps.nix;
    src = ./.;

    goPackagePath = "github.com/google/nixery/group-layers";

    meta = {
      description = "Tool to group a set of packages into container image layers";
      license = lib.licenses.asl20;
      maintainers = [ lib.maintainers.tazjin ];
    };
  };

  # Wrapper script which is called by the Nixery server to trigger an
  # actual image build.
in writeShellScriptBin "nixery-build-image" ''
  exec ${nix}/bin/nix-build --show-trace --no-out-link "$@" ${./build-image.nix}
''