panic on bindings mismatch to manifest-dir

[joshua-auchincloss]

Bug Description

maturin panics and does not recognize conditions where:

• pyproject.toml is used
• bindings are set
• manifest-path is set
• bindings dir does not exist in manifest

Your maturin version (maturin --version)

1.0.0

Your Python version (python -V)

3.10.2

Your pip version (pip -V)

21.2.4

What bindings you're using

pyo3

Does cargo build work?

• Yes, it works

If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)?

• Yes

Steps to Reproduce

1. create src structure project

-> src
---> rust_a
------> Cargo.toml
------> src
--->rust_b
------> Cargo.toml
------> src
-> py_lib

2. in pyproject.toml

[tool.maturin]
python-source = "py_lib"
bindings = "bin" # does not exist
manifest-path = "src/rust_a/Cargo.toml"
module-name = "rust_a"
strip = true
exclude = [

]

3. maturin build

[messense]

Sorry I don't quite understand what you mean by bindings = "bin" # does not exist, can you provide a git repository for repro?