{ "foo":
  { "type": ["@", "rules", "CC", "library"]
  , "name": ["foo"]
  , "hdrs": ["foo.hpp"]
  , "srcs": ["foo.cpp"]
  , "stage": ["foo"]
  }
, "bar":
  { "type": ["@", "rules", "CC", "library"]
  , "name": ["bar"]
  , "hdrs": ["bar.hpp"]
  , "srcs": ["bar.cpp"]
  , "deps": ["foo"]
  , "stage": ["bar"]
  }
, "main_includes_foo":
  { "type": ["@", "rules", "CC", "binary"]
  , "name": ["main"]
  , "srcs": ["main_includes_foo.cpp"]
  , "private-deps": ["bar"]
  }
, "main_links_foo":
  { "type": ["@", "rules", "CC", "binary"]
  , "name": ["main"]
  , "srcs": ["main_links_foo.cpp"]
  , "private-deps": ["bar"]
  }
, "main_links_bar_foo":
  { "type": ["@", "rules", "CC", "binary"]
  , "name": ["main"]
  , "srcs": ["main_links_bar_foo.cpp"]
  , "private-deps": ["bar"]
  }
, "install_bar":
  {"type": ["@", "rules", "CC", "install-with-deps"], "targets": ["bar"]}
}