Use pip-compile for pyproject.toml

pyproject.toml is a standard Python file which is not specific to
poetry. By using pip-compile instead of poetry, we can support any
Python build backend.

lockfile/src/python.rs

@@ -6,8 +6,6 @@ use anyhow::{anyhow, Context};
 #[cfg(feature = "generator")]
 use lockfile_generator::pip::Pip as PipGenerator;
 #[cfg(feature = "generator")]
-use lockfile_generator::poetry::Poetry as PoetryGenerator;
-#[cfg(feature = "generator")]
 use lockfile_generator::python_requirements::PythonRequirements as PythonRequirementsGenerator;
 #[cfg(feature = "generator")]
 use lockfile_generator::Generator;
@@ -43,6 +41,7 @@ impl Parse for PyRequirements {
 
     fn is_path_manifest(&self, path: &Path) -> bool {
         path.file_name() == Some(OsStr::new("requirements.in"))
+            || path.file_name() == Some(OsStr::new("pyproject.toml"))
             || path.file_name() == Some(OsStr::new("setup.cfg"))
             || path.file_name() == Some(OsStr::new("setup.py"))
             || self.is_path_lockfile(path)
@@ -147,13 +146,9 @@ impl Parse for Poetry {
         path.file_name() == Some(OsStr::new("poetry.lock"))
     }
 
-    fn is_path_manifest(&self, path: &Path) -> bool {
-        path.file_name() == Some(OsStr::new("pyproject.toml"))
-    }
-
-    #[cfg(feature = "generator")]
-    fn generator(&self) -> Option<&'static dyn Generator> {
-        Some(&PoetryGenerator)
+    fn is_path_manifest(&self, _path: &Path) -> bool {
+        // `pyproject.toml` is handled by PyRequirements parser
+        false
     }
 }
 

lockfile_generator/src/lib.rs

@@ -10,7 +10,6 @@ pub mod gradle;
 pub mod maven;
 pub mod npm;
 pub mod pip;
-pub mod poetry;
 pub mod python_requirements;
 pub mod yarn;