(AndOr
  ops: [Op_DAmp]
  children: [
    (C {(cd)} {(build/system-image-) (DQ ($ VSub_Number '$1'))})
    (SimpleCommand
      words: [{(./dev-environment.sh)}]
      more_env: [
        (env_pair
          name: PATH
          val: 
            {
              (DQ 
                (CommandSubPart
                  command_list: (CommandList children:[(C {(pwd)})])
                  left_token: <Left_CommandSub '$('>
                  spids: [23 25]
                ) ('/build/host:') ($ VSub_Name '$PATH')
              )
            }
          spids: [21]
        )
      ]
    )
  ]
)