Add first cut of C ABI creation / packaging

Author: timkpaine

README.md

@@ -18,5 +18,37 @@ path = "."
 module = "project"
 ```
 
+### Shared C ABI libraries
+
+Projects can declare multiple Rust artifacts in one hook. A `python-extension`
+artifact keeps the existing PyO3 extension flow, while a `shared-library`
+artifact builds a standalone `cdylib`, copies the exact platform library name to
+the configured destination, and includes it in the wheel.
+
+```toml
+[tool.hatch.build.hooks.hatch-rs]
+verbose = true
+path = "."
+module = "project"
+target-dir = "isolated"
+
+[[tool.hatch.build.hooks.hatch-rs.artifacts]]
+name = "python-extension"
+kind = "python-extension"
+manifest = "Cargo.toml"
+library = "project"
+
+[[tool.hatch.build.hooks.hatch-rs.artifacts]]
+name = "c-abi"
+kind = "shared-library"
+manifest = "rust/Cargo.toml"
+library = "project_ffi"
+crate-type = "cdylib"
+destination = "project/lib/{shared_library}"
+```
+
+Destination templates support `{module}`, `{target}`, `{profile}`, `{library}`,
+`{shared_library}`, and `{python_extension_name}`.
+
 > [!NOTE]
 > This library was generated using [copier](https://copier.readthedocs.io/en/stable/) from the [Base Python Project Template repository](https://github.com/python-project-templates/base).

hatch_rs/plugin.py

@@ -2,7 +2,6 @@
 
 from logging import getLogger
 from os import getenv
-from pathlib import Path
 from platform import machine as platform_machine
 from sys import platform as sys_platform, version_info
 from typing import Any
@@ -61,12 +60,13 @@ def initialize(self, version: str, build_data: dict[str, Any]) -> None:
                 self._logger.warning(command)
 
         # Execute build plan
-        build_plan.execute()
+        try:
+            build_plan.execute()
+        finally:
+            # Perform any cleanup actions
+            build_plan.cleanup()
 
-        # Perform any cleanup actions
-        build_plan.cleanup()
-
-        if not build_plan._libraries:
+        if not build_plan.libraries:
             raise ValueError("No libraries were created by the build.")
 
         # force include libraries
@@ -104,13 +104,9 @@ def initialize(self, version: str, build_data: dict[str, Any]) -> None:
             build_data["tag"] = f"cp{version_major}{version_minor}-cp{version_major}{version_minor}-{os_name}_{machine}"
 
         # force include libraries
-        for path in Path(".").rglob("*"):
-            if path.is_dir():
-                continue
-            if str(path).startswith("target") or str(path).startswith("dist") or not str(path).startswith(config.module):
-                continue
-            if path.suffix in (".pyd", ".dll", ".so", ".dylib"):
-                build_data["force_include"][str(path)] = str(path)
-
-        for path in build_data["force_include"]:
+        force_include = build_data.setdefault("force_include", {})
+        for artifact in build_plan.copied_artifacts:
+            force_include[artifact.distribution_path] = artifact.distribution_path
+
+        for path in force_include:
             self._logger.warning(f"Force include: {path}")