Apache Airflow 2.2.0（Celery组件）安装报错：cattrs依赖版本冲突问题咨询

Let's break down what's happening here and how to fix it:

The Root Cause #

When you try to install apache-airflow[celery]==2.2.0 while pinning cattrs==1.0.0, pip throws a conflict error because:

apache-airflow[celery] 2.2.0 requires cattrs<1.7.0, ~=1.1 when running on Python versions >3.6. Your specified cattrs==1.0.0 falls outside this version range, which creates the dependency clash.

Solutions to Resolve the Conflict #

Here are two straightforward fixes:

• Relax the cattrs version constraint
  Update your cattrs version spec to match Airflow's requirements. Use a range that fits both needs, like this:

  pip install apache-airflow[celery]==2.2.0 cattrs~=1.1,<1.7.0
  

  This tells pip to install a cattrs version that's at least 1.1.x but less than 1.7.0, which aligns perfectly with Airflow 2.2.0's dependency rules.

• Remove the cattrs version pin entirely
  If you don't have a strict requirement for cattrs==1.0.0, let pip handle dependency resolution automatically by omitting the version constraint:

  pip install apache-airflow[celery]==2.2.0
  

  Pip will pick a cattrs version that satisfies Airflow's requirements without any conflicts.

内容的提问来源于stack exchange，提问作者Krishna Pandey