(command.CommandList children: [ (C {(Id.KW_Set set)} {(-ex)}) (C {(pushd)} {(python/manylinux1)}) (C {(git)} {(clone)} {(../../)} {(arrow)}) (C {(docker)} {(build)} {(-t)} {(arrow-base-x86_64)} {(-f)} {(Dockerfile-x86_64)} {(.)}) (C {(docker)} {(run)} {(--shm-size) (Id.Lit_Equals '=') (2g)} {(--rm)} {(-e)} {(Id.Lit_VarLike 'PYARROW_PARALLEL=') (3)} {(-v)} {($ Id.VSub_DollarName '$PWD') (Id.Lit_Other ':') (/io)} {(arrow-base-x86_64)} {(/io/build_arrow.sh)} ) ] )