def create_package_env(env_name, package_version: str):
        delete_env(env_name)
        subprocess.run([
            "conda", "create", "-n", env_name, "-y",
            f"python={_current_py_version()}"
        ])

        _inject_ray_to_conda_site(get_conda_env_dir(env_name))
        ray_deps: List[str] = _resolve_install_from_source_ray_dependencies()
        ray_deps.append(f"requests=={package_version}")
        with tempfile.NamedTemporaryFile("w") as f:
            f.writelines([line + "\n" for line in ray_deps])
            f.flush()

            commands = [
                init_cmd, f"conda activate {env_name}",
                f"python -m pip install -r {f.name}", "conda deactivate"
            ]
            proc = subprocess.run([" && ".join(commands)],
                                  shell=True,
                                  stdout=subprocess.PIPE,
                                  stderr=subprocess.PIPE)
            if proc.returncode != 0:
                print("pip install failed")
                print(proc.stdout.decode())
                print(proc.stderr.decode())
                assert False
    def create_package_env(env_name, package_version: str):
        delete_env(env_name)
        proc = subprocess.run(
            [
                "conda",
                "create",
                "-n",
                env_name,
                "-y",
                f"python={_current_py_version()}",
            ],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
        )
        if proc.returncode != 0:
            print("conda create failed, returned %d" % proc.returncode)
            print(proc.stdout.decode())
            print(proc.stderr.decode())
            assert False

        _inject_ray_to_conda_site(get_conda_env_dir(env_name))
        ray_deps: List[str] = _resolve_install_from_source_ray_dependencies()
        ray_deps.append(f"requests=={package_version}")

        reqs = tmp_path_factory.mktemp("reqs") / "requirements.txt"
        with reqs.open("wt") as fid:
            for line in ray_deps:
                fid.write(line)
                fid.write("\n")

        commands = [
            f"conda activate {env_name}",
            f"python -m pip install -r {str(reqs)}",
            "conda deactivate",
        ]
        if _WIN32:
            # as a string
            command = " && ".join(commands)
        else:
            commands.insert(0, init_cmd)
            # as a list
            command = [" && ".join(commands)]
        proc = subprocess.run(
            command,
            shell=True,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
        )
        if proc.returncode != 0:
            print("conda/pip install failed, returned %d" % proc.returncode)
            print("command", command)
            print(proc.stdout.decode())
            print(proc.stderr.decode())
            assert False