我正在尝试使用colab的批处理集成模型。pip安装：

!pip install "git+https://github.com/google/uncertainty-baselines.git#egg=uncertainty_baselines"

并得到以下错误：

ERROR: tensorflow 2.5.0 has requirement keras-nightly~=2.5.0.dev, but you'll have keras-nightly 2.7.0.dev2021070800 which is incompatible.
ERROR: tf-nightly 2.7.0.dev20210708 has requirement grpcio<2.0,>=1.37.0, but you'll have grpcio 1.34.1 which is incompatible.

一旦我尝试使用导入使用库：

import uncertainty_baselines as ub

这就产生了这个错误

ImportError: cannot import name '__version__' from 'keras' (/usr/local/lib/python3.7/dist-packages/keras/__init__.py)

因此，我尝试手动修复软件包的版本，我尝试首先安装以下软件包和依赖项：

!pip install keras-nightly==2.5.0.dev2021020510
!pip install grpcio==1.34.0
!pip install tensorflow==2.5.0
!pip install tf-nightly==2.7.0.dev20210708

但它引发了以下错误：

ERROR: tf-nightly 2.7.0.dev20210708 has requirement grpcio<2.0,>=1.37.0, but you'll have grpcio 1.34.1 which is incompatible.
ERROR: tf-nightly 2.7.0.dev20210708 has requirement keras-nightly~=2.7.0.dev, but you'll have keras-nightly 2.5.0.dev2021020510 which is incompatible

我再次尝试修复这些版本：

!pip install keras-nightly==2.7.0.dev2021070800
!pip install grpcio==1.37.0
!pip install tensorflow==2.5.0
!pip install tf-nightly==2.7.0.dev20210708

但现在它引发了以下错误：

ERROR: tensorflow 2.5.0 has requirement grpcio~=1.34.0, but you'll have grpcio 1.37.0 which is incompatible.
ERROR: tensorflow 2.5.0 has requirement keras-nightly~=2.5.0.dev, but you'll have keras-nightly 2.7.0.dev2021070800 which is incompatible.

这似乎是我无法解决的循环依赖关系，它与Tensor相关，而与我试图使用的特定存储库无关。