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Edit File: snapcraft.yaml

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
package-repositories:
  - type: apt
    ppa: snappy-dev/image
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/1.18/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
    after: [apparmor]
    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: |
      # 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 -uc -us
      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/
      # Note that this check should run *after* dpkg-buildpackage was run
      # as this will re-run "go generate" which may cause a dirty tree
      #
      # 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 or during
      # the build 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
      # copy helper for collecting debug output
      cp -av debug-tools/snap-debug-info.sh $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
  zlib:
    plugin: nil
    stage-packages:
      - zlib1g
    stage:
      - lib/*
  # Also needed by squashfs-tools
  zstd:
    plugin: nil
    stage-packages:
      - libzstd1
    stage:
      - usr/lib/*
      - 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
  apparmor:
    plugin: autotools
    build-packages: [bison, flex, gettext, g++, pkg-config, wget]
    source: https://launchpad.net/apparmor/3.0/3.0.8/+download/apparmor-3.0.8.tar.gz
    override-pull: |
      snapcraftctl pull
      # add support for mediating posix mqueue's and userns - these come from
      # the ubuntu source package for lunar
      # https://git.launchpad.net/ubuntu/+source/apparmor/tree/debian/patches/ubuntu?h=ubuntu/lunar
      for feature in mqueue userns; do
        wget https://git.launchpad.net/ubuntu/+source/apparmor/plain/debian/patches/ubuntu/add-${feature}-support.patch?h=ubuntu/lunar -O - | patch -p1
      done
      # apply local apparmor patches
      for patch in $SNAPCRAFT_PROJECT_DIR/build-aux/snap/patches/apparmor/*; do
          patch -p1 < $patch
      done
    override-build: |
      cd $SNAPCRAFT_PART_BUILD/libraries/libapparmor
      ./autogen.sh
      ./configure --prefix=/usr --disable-man-pages --disable-perl --disable-python --disable-ruby
      make -j$(nproc)
      # place libapparmor into staging area for use by snap-confine
      make -C src install DESTDIR=$SNAPCRAFT_STAGE
      cd $SNAPCRAFT_PART_BUILD/parser
      # copy in a pregenerated list of network address families so that the
      # parser gets built to support as many as possible even if glibc in
      # the current build environment does not support them
      # For some reason, some snapcraft version remove the "build-aux" folder
      # and move the contents up when the data is uploaded; this conditional
      # manages it.
      if [ -d "$SNAPCRAFT_PROJECT_DIR/build-aux" ]; then
        cp $SNAPCRAFT_PROJECT_DIR/build-aux/snap/local/apparmor/af_names.h .
      else
        cp $SNAPCRAFT_PROJECT_DIR/snap/local/apparmor/af_names.h .
      fi
      make -j$(nproc)
      mkdir -p $SNAPCRAFT_PART_INSTALL/usr/lib/snapd
      cp -a apparmor_parser $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/
      mkdir -p $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/apparmor
      cp -a parser.conf $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/apparmor/
      cd $SNAPCRAFT_PART_BUILD/profiles
      make -j$(nproc)
      mkdir -p $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/apparmor.d
      cp -a apparmor.d/abi $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/apparmor.d/
      cp -a apparmor.d/abstractions $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/apparmor.d/
      cp -a apparmor.d/tunables $SNAPCRAFT_PART_INSTALL/usr/lib/snapd/apparmor.d/