Error with lightning, gradio module

[zhulongcc]

it seems like incompatible version of installed modules.
Here is log:
pip install gradio==4.11.0
return:
lightning 2.0.0 requires fastapi<0.89.0, but you have fastapi 0.115.6 which is incompatible.
So i try:
pip install fastapi==0.88
return:
gradio 4.11.0 requires pydantic>=2.0, but you have pydantic 1.10.19 which is incompatible.
wandb 0.19.1 requires pydantic<3,>=2.6, but you have pydantic 1.10.19 which is incompatible.
Then i try:
pip install pydantic==2.6
return:
fastapi 0.88.0 requires pydantic!=1.7,!=1.7.1,!=1.7.2,!=1.7.3,!=1.8,!=1.8.1,<2.0.0,>=1.6.2, but you have pydantic 2.6.0 which is incompatible.

gradio 4.11.0 need pydantic version>=2.0, but fastapi need pydantic version >=1.6.2 and <2.0.0, thats antinomy!!
How can i solve it plz

[zhulongcc]

run the pip install -r requirements.txt successfully, so it seems to be solved.
ps: above question occur when i try install 'lightning', 'gradio', and 'nerfacc' one by one.