include pyproject.toml in cargo metadata args

Consider the cargo options merged from the pyproject.toml when
generating the cargo metadata.

This fixes the following problem: if pyo3 is an optional dependency
that is enabled through a feature declared in pyproject.toml, then
maturin will not detect pyo3 as binding.

Changelog.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * Add 64-bit RISC-V support by felixonmars in [#1001](https://github.com/PyO3/maturin/pull/1001)
 * Add support for invoking with `python3 -m maturin` in [#1008](https://github.com/PyO3/maturin/pull/1008)
+* Fix detection of optional dependencies when declaring `features` in `pyproject.toml` in [#1014](https://github.com/PyO3/maturin/pull/1014)
 
 ## [0.13.0] - 2022-07-09
 

src/build_options.rs

@@ -580,7 +580,7 @@ impl BuildOptions {
             Vec::new()
         };
 
-        let cargo_metadata_extra_args = extract_cargo_metadata_args(&self.cargo)?;
+        let cargo_metadata_extra_args = extract_cargo_metadata_args(&cargo_options)?;
 
         let result = MetadataCommand::new()
             .manifest_path(&manifest_file)