Second order path dependencies are not handled

[adrienball]

I am facing an issue with second order path dependencies, which I manage to isolate in a simple example.
Let's consider the following project layout:

├── package-1
│   └── setup.py
├── package-2
│   └── setup.py
└── package-3
    └── setup.py

With the following content:

package-1/setup.py

from setuptools import setup

setup(
    name="package-1",
    version="0.1.0"
)

package-2/setup.py

from setuptools import setup, os

setup(
    name="package-2",
    version="0.1.0",
    install_requires=[f"package-1 @ file://{os.getcwd()}/../package-1"],
)

package-3/setup.py

from setuptools import setup, os

setup(
    name="package-3",
    version="0.1.0",
    install_requires=[f"package-2 @ file://{os.getcwd()}/../package-2"],
)

Now if I try to install package-3:

> cd package-3
> uv venv --seed
Using Python 3.9.9 interpreter at: /Library/Frameworks/Python.framework/Versions/3.9/bin/python3
Creating virtualenv at: .venv
 + pip==24.0
 + setuptools==69.1.1
 + wheel==0.42.0
Activate with: source .venv/bin/activate
> uv pip install -e .
   Built file:///Users/###/uv-debug/package-3                                                                                                                                                                                                    Built 1 editable in 1.07s
error: Package `package-1` attempted to resolve via URL: file:///Users/###/uv-debug/package-1. URL dependencies must be expressed as direct requirements or constraints. Consider adding `package-1 @ file:///Users/###/uv-debug/package-1` to your dependencies or constraints file.

However if I try to install package-2, it works:

> cd package-2
> uv venv --seed
Using Python 3.9.9 interpreter at: /Library/Frameworks/Python.framework/Versions/3.9/bin/python3
Creating virtualenv at: .venv
 + pip==24.0
 + setuptools==69.1.1
 + wheel==0.42.0
Activate with: source .venv/bin/activate
> uv pip install -e .
   Built file:///Users/###/uv-debug/package-2                                                                                                                                                                                                    Built 1 editable in 1.10s
Resolved 2 packages in 1ms
Installed 2 packages in 5ms
 + package-1==0.1.0 (from file:///Users/###/uv-debug/package-1)
 + package-2==0.1.0 (from file:///Users/###/uv-debug/package-2)

I have no issue if I use pip install -e . instead of uv pip install -e ..

Thanks for your help!

Environment

uv 0.1.15
python 3.9.9
MacOS

[charliermarsh]

Thanks -- this is by design right now as per the error message: we don't respect arbitrary direct URL dependencies, and instead require that they're declared upfront as first-party dependencies. You can track that behavior here: #1808.

[charliermarsh]

(Gonna merge into #1808.)

[adrienball]

Thanks for your reactivity :)
I'll keep following for potential updates on #1808 then.
Feel free to close this issue if necessary.