How to specify extra config from local source

[Allencccc]

My code structure is :

demo-project/
│
├── src/
│   ├── demo/
│   │   ├── __init__.py      
│   │   ├── main.py            
│   │   └── ...               
│   │
│   ├── demo_app/
│   │   ├── __init__.py           
│   │   ├── app1/
│   │   │   ├── __init__.py     
│   │   │   └── ...               
│   │   ├── app2/
│   │   │   ├── __init__.py       
│   │   │   └── ...              
│   │   ├── app3/
│   │   │   ├── __init__.py       
│   │   │   └── ...                
│   │   └── ...                   
│
├── pyproject.toml                 
├── README.md                    
├── CHANGELOG.md              
└── requirements.txt 

My purpose is to:

• pip install demo : only install demo/
• pip install demo[app1]: can install both demo and app1 module

My pyproject.toml is:

[tool.poetry]
name = "demo"
version = "0.1.1"
description = "extra demo"
authors = ["somebody"]
maintainers = ["somebody"]
license = "LICENSE.txt"
readme = "README.md"


packages = [
    { include = "demo", from = "src" },
    { include = "demo_app", from = "src" },
]


[tool.poetry.dependencies]
python = ">=3.11"

[tool.poetry.extras]
app1 = ["demo_app.app1"]
app2 = ["demo_app.app2"]
app3 = ["demo_app.app3"]
all = ["app1", "app2", "app3"]

[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"

But I found it didn't works. Can poetry help me to get this or must be with other plugins?