Python 当requirements.txt中提到pip包时，如何通过--no-build隔离安装它们？

背景： 这就是我面临的问题
并试图通过

我想用

--no-build-isolation

在py2.7 venv中，如果我这样做：

pip install bottleneck==1.2.1 --no-build-isolation

Collecting bottleneck==1.2.1
Collecting numpy (from bottleneck==1.2.1)
  Downloading https://files.pythonhosted.org/packages/d7/b1/3367ea1f372957f97a6752ec725b87886e12af1415216feec9067e31df70/numpy-1.16.5-cp27-cp27mu-manylinux1_x86_64.whl (17.0MB)
    100% |████████████████████████████████| 17.0MB 1.2MB/s 
Installing collected packages: numpy, bottleneck
Successfully installed bottleneck-1.2.1 numpy-1.16.5
You are using pip version 18.0, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

它安装得很好

$ cat abc.txt 
bottleneck==1.2.1, --no-build-isolation

但是

及

不要工作

我该怎么做呢

---

我也试过了，但没用。

将pip升级到pip-20.2.2为我解决了这个问题。 命令

$pip install -r abc.txt
Usage: pip [options]

Invalid requirement: bottleneck==1.2.1, --no-build-isolation
pip: error: no such option: --no-build-isolation

You are using pip version 18.0, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

$ pip install -r abc.txt
Usage: pip [options]

Invalid requirement: bottleneck==1.2.1 --no-build-isolation
pip: error: no such option: --no-build-isolation

You are using pip version 18.0, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

pip install --upgrade pip