(command.CommandList
  children: [
    (C {(git)} {(clone)} {(https) (Id.Lit_Other ':') (//chromium.googlesource.com/chromium/src/build)})
    (C {(mkdir)} {(tools)})
    (C {(cd)} {(tools)})
    (C {(git)} {(clone)} {(https) (Id.Lit_Other ':') (//chromium.googlesource.com/external/gyp)})
    (C {(cd)} {(..)})
    (C {(build/linux/sysroot_scripts/install-sysroot.py)} {(--arch)} {(i386)})
    (C {(build/linux/sysroot_scripts/install-sysroot.py)} {(--arch)} {(amd64)})
  ]
)