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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.
{ pkgs ? import <nixpkgs> {} }:
with pkgs;
rec {
# Go implementation of the Nixery server which implements the
# container registry interface.
#
# Users will usually not want to use this directly, instead see the
# 'nixery' derivation below, which automatically includes runtime
# data dependencies.
nixery-server = buildGoPackage {
name = "nixery-server";
# Technically people should not be building Nixery through 'go get'
# or similar (as other required files will not be included), but
# buildGoPackage requires a package path.
goPackagePath = "github.com/google/nixery";
goDeps = ./go-deps.nix;
src = ./.;
meta = {
description = "Container image build serving Nix-backed images";
homepage = "https://github.com/google/nixery";
license = lib.licenses.asl20;
maintainers = [ lib.maintainers.tazjin ];
};
};
# Nix expression (unimported!) which is used by Nixery to build
# container images.
nixery-builder = runCommand "build-registry-image.nix" {} ''
cat ${./build-registry-image.nix} > $out
'';
# Static files to serve on the Nixery index. This is used primarily
# for the demo instance running at nixery.appspot.com and provides
# some background information for what Nixery is.
nixery-static = runCommand "nixery-static" {} ''
mkdir $out
cp ${./static}/* $out
'';
# Wrapper script running the Nixery server with the above two data
# dependencies configured.
#
# In most cases, this will be the derivation a user wants if they
# are installing Nixery directly.
nixery-bin = writeShellScriptBin "nixery" ''
export NIX_BUILDER="${nixery-builder}"
export WEB_DIR="${nixery-static}"
exec ${nixery-server}/bin/nixery
'';
# Container image containing Nixery and Nix itself. This image can
# be run on Kubernetes, published on AppEngine or whatever else is
# desired.
nixery-image = let
# Wrapper script for the wrapper script (meta!) which configures
# the container environment appropriately.
#
# Most importantly, sandboxing is disabled to avoid privilege
# issues in containers.
nixery-launch-script = writeShellScriptBin "nixery" ''
set -e
export NIX_SSL_CERT_FILE=/etc/ssl/certs/ca-bundle.crt
mkdir /tmp
# Create the build user/group required by Nix
echo 'nixbld:x:30000:nixbld' >> /etc/group
echo 'nixbld:x:30000:30000:nixbld:/tmp:/bin/bash' >> /etc/passwd
# Disable sandboxing to avoid running into privilege issues
mkdir -p /etc/nix
echo 'sandbox = false' >> /etc/nix/nix.conf
exec ${nixery-bin}/bin/nixery
'';
in dockerTools.buildLayeredImage {
name = "nixery";
contents = [
bashInteractive
cacert
coreutils
nix
nixery-launch-script
gnutar
gzip
];
};
}
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