Regression: poetry install fails with a build script due to not respecting [build-system] requires #7909

• Poetry version: 1.4.2
• Python version: 3.9.16
• OS version and name: docker linux from python:3.9-slim
• pyproject.toml: https://gist.github.com/Samreay/0af44d4f15f8cd96e6e09315d738d441

• I am on the latest stable Poetry version, installed using a recommended method.
• I have searched the issues of this repo and believe that this is not a duplicate.
• I have consulted the FAQ and blog for any relevant entries or release notes.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

Issue

This issue may be linked to:

• poetry install does not honor build-system.requires #6154
• new installer does not respect get_requires_for_build_editable  #7574
• Poetry 1.4.0 can't build (editable) dependencies requiring setuptools <64 #7583

This issue might actually be setuptools rather than poetry as well. I'm not sure how the two libraries interact with each other.

We noticed that our latest builds are failing on our poetry install. Our project has cython code, and so part of our build.py that's referenced by the [tool.poetry.build] is to use numpy and cython (which are part of the [build-system].requires section) to compile the cython code into binaries.

Now, a poetry build works as expected, because it installs the build dependencies. But a poetry install on longer works

To summarise the above images:

1. numpy is defined in both the [tool.poetry.dependencies] and [build-system].requires
2. poetry build runs and compiles files successfully
3. poetry install fails on: Getting requirements to build editable did not run successfully. as poetry/setuptools tries to run our builder.py without dependencies, which fails.

Now the big caveat here, is that I don't know how poetry and setuptools interact, so this might have absolutely nothing to do with poetry and everything to do with setuptools. In which case, please feel free to close out this issue and I'll try to raise it somewhere else.

Has the way to include a build script that has dependencies changed in the latest poetry versions?