app: applause

ingredients:
  packages:
    # The binary links against these:
    - libreadline
    # libjack must be used from the host system...
    #- libjack-jackd2
    #- libluajit-5.1
    # Required only at runtime.
    # Development packages are not strictly required, but they provide the plain *.so symlinks
    # that LuaJIT FFI expects:
    - libsndfile1-dev
    - libasound2-dev
    - feedgnuplot
    # FIXME: No matter what, we cannot get rid of gnuplot-qt, pulled in by feedgnuplot...
    #- gnuplot-x11
    # FIXME: Why is this required in the image?
    - python3-venv
  dist: focal
  sources:
    - deb http://archive.ubuntu.com/ubuntu/ focal main universe
  script:
    # NOTE: The LuaJIT from Ubuntu is too outdated.
    - wget -O luajit.tar.gz -c "https://github.com/LuaJIT/LuaJIT/archive/refs/heads/v2.1.tar.gz"
    # Will leave a "LuaJIT-2.1" directory.
    - tar xzf luajit.tar.gz
    - wget -O applause.tar.gz -c "https://github.com/rhaberkorn/applause2/archive/refs/heads/master.tar.gz"
    # Will leave an "applause2-master" directory.
    - tar xzf applause.tar.gz
    # Install build-time dependencies
    - sudo apt-get install -y build-essential lua5.1 libreadline-dev libjack-jackd2-dev virtualenv

script:
  - make -C ../LuaJIT-2.1 DESTDIR=`pwd` PREFIX=/usr install
  - make -C ../applause2-master LUA_CFLAGS="-I`pwd`/usr/include/luajit-2.1" LUA_LDFLAGS="-L`pwd`/usr/lib -lluajit-5.1"
  - cp -r ../applause2-master ./usr/share/applause
  # Will be required by the ILua fork
  - ln -s ../share/applause/ilua-wrapper.sh ./usr/bin/lua
  # Install Jupyter notebooks...
  - virtualenv --python=python3 ./usr
  - ./usr/bin/pip3 install --no-input notebook twisted==22.10.0 git+https://github.com/rhaberkorn/ilua.git@improvements
  # This custom launcher starts the notebook by default but allows launching the plain CLI as well.
  # NOTE: The Pip-installed hash-bang lines hard code paths from the build system.
  - cat >./usr/bin/applause <<\EOF
  - #!/bin/sh
  - HERE="$(dirname "$(readlink -f "$0")")"
  - APPDIR=$(readlink -f "$HERE/../../")
  - export PYTHONPATH="$APPDIR/usr/lib/python3.8/site-packages"
  - cd ~/
  - if [ "$1" = cli ]; then shift; exec lua "$@"; fi
  - if [ "$1" = ilua ]; then shift; exec python3 "$APPDIR/usr/bin/ilua" "$@"; fi
  - exec python3 "$APPDIR/usr/bin/jupyter-notebook" --MultiKernelManager.default_kernel_name=lua "$@"
  - EOF
  - chmod a+x ./usr/bin/applause
  # Some thinning - remove unneeded files
  - find . -name "*.a" -delete
  - rm -rf ./usr/share/doc
# - cp ../applause2-master/applause.desktop .
  - cat >applause.desktop <<EOF
  - [Desktop Entry]
  - Type=Application
  - Categories=Audio
  - Icon=applause
  - Name=Applause
  - Exec=applause %u
  - Terminal=true
  - EOF
  # FIXME: Add a real icon.
  - touch applause.svg