TARGETS

{
  // Generic target 'simple_greeter'
  //  - produces file 'out.txt'
  simple_greeter: {
    type: 'generic',
    cmds: 'printf "Hello World\n" > out.txt',
    outs: 'out.txt',
  },

  // Generic target 'file_greeter'
  //  - produces file 'out.txt'
  //  - depends on local file 'name.txt'
  file_greeter: {
    type: 'generic',
    // Field 'cmds' expects a list of strings or a newline-separated string.
    // -> Jsonnet multi-line string generates a newline-separated string.
    cmds: |||
      printf "Hello " > out.txt
      cat name.txt >> out.txt
    |||,
    outs: 'out.txt',
    deps: ['name.txt'],
  },

  // Generic target 'input_greeter'
  //  - produces file 'out.txt'
  //  - depends on target 'input.txt'
  input_greeter: {
    type: 'generic',
    cmds: |||
      printf "Hello " > out.txt
      cat input.txt >> out.txt
    |||,
    outs: 'out.txt',
    // Dependency 'input.txt' is a target (see below), not a file!
    deps: ['input.txt'],
  },

  // File-gen target 'input.txt'
  //  - produces file 'input.txt'
  //  - containing file from field 'data'
  'input.txt': {
    type: 'file_gen',
    // We want to read variable 'INPUT_STRING'.
    arguments_config: 'INPUT_STRING',
    name: 'input.txt',
    // Use content of variable 'INPUT_STRING' if set, or else use 'Universe\n'
    data: var('INPUT_STRING', default='Universe\n'),
  },

  // Install target 'ALL'
  //  - stages outputs from greeters to specified file paths
  ALL: {
    type: 'install',
    files: {
      'out/simple.txt': 'simple_greeter',
      'out/file.txt': 'file_greeter',
      'out/input.txt': 'input_greeter',
    },
  },
}