Is there a German howto/documentation for snapcraft?

[Ralf Mardorf]

Hi,

I don't understand how to build a snap.

Is there a German howto/documentation for snapcraft?

Here is what I tried [1].

I guess I confused stage-packages [1] with build-packages, anyway, were
do I need to add the build-packages?

Perhaps like that:

parts:
  qjackctl:
    source: qjackctl-0.4.2-r13-g5a8f67fc
    build-packages:
      [libasound2-dev, libjack-dev, libfoo-dev, libbar-dev]
    configflags:
      CFLAGS = -Wall -g
      export QTDIR=/usr/share/qt5
      export QT_SELECT=qt5
[snip]

Is there a way to depend on JACK1 or JACK2 outside of the snap? IOW to
use the snap with JACK of the regular Ubuntu install?

As you can see a script generates my snapcraft.yaml. Is it possible to
clone and get the version number within the snapcraft.yaml?

Regards,
Ralf

[1]
[weremouse at moonstudio qjackctl]$ ls -hAl 
total 16K
-rwxrwxr-x 1 weremouse weremouse 1.2K Jul 12 01:57 make_qjackctl-git_yaml.sh
drwxrwxr-x 5 weremouse weremouse 4.0K Jul 12 01:58 qjackctl-0.4.2-r13-g5a8f67fc
drwxrwxr-x 3 weremouse weremouse 4.0K Jul 12 01:58 setup
-rw-rw-r-- 1 weremouse weremouse  806 Jul 12 01:58 snapcraft.yaml
[weremouse at moonstudio qjackctl]$ snapcraft snap
Issues while validating snapcraft.yaml: The 'stage-packages' property does not match the required schema: ['libasound2-dev', 'libjack-dev', 'qtbase5-dev', 'qttools5-dev-tools', 'libqt5x11extras5-dev', 'libx11-dev', 'jackd2', 'libasound2', 'libc6', 'libgcc1', 'libjack-jackd2-0', 'libqt5core5a', 'libqt5dbus5', 'libqt5gui5', 'libqt5widgets5', 'libqt5x11extras5', 'libqt5xml5', 'libstdc++6', 'libstdc++6', 'libx11-6'] has non-unique elements
[weremouse at moonstudio qjackctl]$ head -n5 make_qjackctl-git_yaml.sh
#!/bin/dash

yaml() {
cat<<EOF
name: qjackctl-git
[weremouse at moonstudio qjackctl]$ tail -n12 make_qjackctl-git_yaml.sh
EOF
}

git clone git://git.code.sf.net/p/qjackctl/code qjackctl
cd qjackctl
qjackctl_version=$(git describe --abbrev=8|cut -f2 -d"l"|sed -r 's/^.//;s/_/./g;s/([^-]*-g)/r\1/')
mv ../qjackctl ../qjackctl-$qjackctl_version
mkdir -p ../setup/gui
ln -s ../../qjackctl-$qjackctl_version/src/images/qjackctl.png ../setup/gui/qjackctl.png
yaml > ../snapcraft.yaml

exit
[weremouse at moonstudio qjackctl]$ cat snapcraft.yaml 
name: qjackctl-git
version: 0.4.2-r13-g5a8f67fc
summary: QjackCtl
description: QjackCtl offers a Qt front-end for the JACK low-latency audio server.
confinement: strict

apps:
  qjackctl:
    command: bin/qjackctl

parts:
  qjackctl:
    source: qjackctl-0.4.2-r13-g5a8f67fc
    configflags:
      CFLAGS = -Wall -g
      export QTDIR=/usr/share/qt5
      export QT_SELECT=qt5
    stage-packages:
      - libasound2-dev
      - libjack-dev
      - qtbase5-dev
      - qttools5-dev-tools
      - libqt5x11extras5-dev
      - libx11-dev
      - jackd2
      - libasound2
      - libc6
      - libgcc1
      - libjack-jackd2-0
      - libqt5core5a
      - libqt5dbus5
      - libqt5gui5
      - libqt5widgets5
      - libqt5x11extras5
      - libqt5xml5
      - libstdc++6
      - libstdc++6
      - libx11-6
[weremouse at moonstudio qjackctl]$ ls -Ggh setup/gui/
total 0
lrwxrwxrwx 1 58 Jul 12 01:58 qjackctl.png -> ../../qjackctl-0.4.2-r13-g5a8f67fc/src/images/qjackctl.png