name: snapd
type: snapd
summary: Daemon and tooling that enable snap packages
description: |
  Install, configure, refresh and remove snap packages. Snaps are
  'universal' packages that work across many different Linux systems,
  enabling secure distribution of the latest apps and utilities for
  cloud, servers, desktops and the internet of things.

  Start with 'snap list' to see installed snaps.
adopt-info: snapd-deb
# build-base is needed here for snapcraft to build this snap as with "modern"
# snapcraft
build-base: core
grade: stable
license: GPL-3.0

# Note that this snap is unusual in that it has no "apps" section.
#
# It is started via re-exec on classic systems and via special
# handling in the core18 snap on Ubuntu Core Systems.
#
# Because snapd itself manages snaps it must currently run totally
# unconfined (even devmode is not enough).
#
# See the comments from jdstrand in
# https://forum.snapcraft.io/t/5547/10
parts:
  snapd-deb:
    plugin: nil
    source: .
    build-snaps: [go/1.13/stable]
    # these packages are needed to call mkversion.sh in override-pull, all other
    # dependencies are installed using apt-get build-dep
    build-packages:
      - git
      - dpkg-dev
    override-pull: |
      snapcraftctl pull
      # set version, this needs dpkg-parsechangelog (from dpkg-dev) and git
      snapcraftctl set-version "$(./mkversion.sh --output-only)"
      # Ensure that ./debian/ packaging which we are about to use
      # matches the current `build-base` release. I.e. ubuntu-16.04
      # for build-base:core, etc.
      ./generate-packaging-dir
      # install build dependencies
      export DEBIAN_FRONTEND=noninteractive
      export DEBCONF_NONINTERACTIVE_SEEN=true
      sudo -E apt-get build-dep -y ./
      ./get-deps.sh --skip-unused-check
    override-build: |
      # TODO: when something like "craftctl get-version" is ready, then we can
      # use that, but until then, we have to re-run mkversion.sh to check if the
      # version number was set as "dirty" from the override-pull step
      if sh -x ./mkversion.sh --output-only | grep "dirty"; then
        mkdir -p $SNAPCRAFT_PART_INSTALL/usr/lib/snapd
        ( 
          echo "dirty git tree during build detected:"
          git status
          git diff
        ) > $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/dirty-git-tree-info.txt
      fi
      # unset the LD_FLAGS and LD_LIBRARY_PATH vars that snapcraft sets for us
      # as those will point to the $SNAPCRAFT_STAGE which on re-builds will 
      # contain things like libc and friends that confuse the debian package
      # build system
      # TODO: should we unset $PATH to not include $SNAPCRAFT_STAGE too?
      unset LD_FLAGS
      unset LD_LIBRARY_PATH
      # if we are root, disable tests because a number of them fail when run as
      # root
      if [ "$(id -u)" = "0" ]; then
        DEB_BUILD_OPTIONS=nocheck
        export DEB_BUILD_OPTIONS
      fi
      # run the real build (but just build the binary package, and don't
      # bother compressing it too much)
      dpkg-buildpackage -b -Zgzip -zfast
      dpkg-deb -x $(pwd)/../snapd_*.deb $SNAPCRAFT_PART_INSTALL
      # not included in the deb as it's only used with UC20 preseeding.
      cp -a data/preseed.json $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/

  # xdelta is used to enable delta downloads (even if the host does not have it)
  xdelta3:
    plugin: nil
    stage-packages:
      - xdelta3
    stage:
      - usr/bin/*
      - usr/lib/*
      - lib/*
  # squashfs-tools are used by `snap pack`
  squashfs-tools:
    plugin: nil
    stage-packages:
      - squashfs-tools
    stage:
      - usr/bin/*
      - usr/lib/*
      - lib/*
  # liblzma5 is part of core but the snapd snap needs to run even without core
  liblzma5:
    plugin: nil
    stage-packages:
      - liblzma5
    stage:
      - lib/*
  # Needed by squashfs-tools and fc-cache
  zlib:
    plugin: nil
    stage-packages:
      - zlib1g
    stage:
      - lib/*
  # libc6 is part of core but we need it in the snapd snap for
  # CommandFromSystemSnap
  libc6:
    plugin: nil
    stage-packages:
      - libc6
      - libc-bin
      - libgcc1
    stage:
      - lib/*
      - usr/lib/*
      - lib64/*
      - etc/ld.so.conf
      - etc/ld.so.conf.d/*
    override-stage: |
      snapcraftctl stage
      # fix symlinks of ld.so to be relative
      if [ "$(readlink -f lib64/ld-linux-x86-64.so.2)" = "/lib/x86_64-linux-gnu/ld-2.23.so" ]; then
          ln -f -s ../lib/x86_64-linux-gnu/ld-2.23.so lib64/ld-linux-x86-64.so.2
      fi
      if [ "$(readlink -f lib64/ld64.so.2)" = "/lib/powerpc64le-linux-gnu/ld-2.23.so" ]; then
          ln -f -s ../lib/powerpc64le-linux-gnu/ld-2.23.so lib64/ld64.so.2
      fi
  # the version in Ubuntu 16.04 (cache v6)
  fontconfig-xenial:
    plugin: nil
    build-packages: [python3-apt]
    source: https://github.com/snapcore/fc-cache-static-builder.git
    override-build: |
      ./build-from-security.py xenial
      mkdir -p $SNAPCRAFT_PART_INSTALL/bin
      cp -a fc-cache-xenial $SNAPCRAFT_PART_INSTALL/bin/fc-cache-v6
    prime:
      - bin/fc-cache-v6
  # the version in Ubuntu 18.04 (cache v7)
  fontconfig-bionic:
    plugin: nil
    build-packages: [python3-apt]
    source: https://github.com/snapcore/fc-cache-static-builder.git
    override-build: |
      ./build-from-security.py bionic
      mkdir -p $SNAPCRAFT_PART_INSTALL/bin
      cp -a fc-cache-bionic $SNAPCRAFT_PART_INSTALL/bin/fc-cache-v7
    prime:
      - bin/fc-cache-v7