Which plugin just allows me to manually execute shell commands?

snapcraft
1

When I want to build the libmpv I execute the following commands:

sudo apt-get install git dh-autoreconf build-essential libfreetype6-dev libfribidi-dev libfontconfig1-dev yasm libmp3lame-dev libx264-dev libfdk-aac-dev python libssl1.0-dev libpulse-dev python-pip
sudo -H pip install -g youtube-dl

git clone https://github.com/mpv-player/mpv-build.git

cd mpv-build
echo --enable-libx264 >> ffmpeg_options
echo --enable-libmp3lame >> ffmpeg_options
echo --enable-libfdk-aac >> ffmpeg_options
echo --enable-nonfree >> ffmpeg_options
echo --enable-libmpv-shared > mpv_options
./use-mpv-custom v0.29.1
./update
./rebuild -j4
sudo ./install
cd ..

export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH

As you can see I build the libmpv using a utility library that handles all the dirty job of building it manually. Though, being newbie I am still pretty much confused once it comes on how I can use it when I need to build a software using it as a snap.

The confusion rises on what module I need to use when I have already a shell script that handles the building process itself and I just need to execute it. Can you help me with that?

In my case I need to execute from the command line the install script in order the tool to be able to install the libmpv.

2

You can use the nil plugin for this, together with the override-build property. Something like this:

parts:
  my-part:
    plugin: nil
    source: ...
    override-build: |
      # Put shell commands here run from a directory containing the
      # part's source. The commands should build the part, and install
      # anything intended for the snap in $SNAPCRAFT_PART_INSTALL

You can also combine override-build with the other plugins: just include a call to snapcraftctl build where you want the plugin’s usual build commands to run.