Add support for invoking with python3 -m maturin

.github/workflows/test.yml

@@ -385,6 +385,8 @@ jobs:
         if: steps.changes.outputs.changed == 'true'
       - run: maturin --version
         if: steps.changes.outputs.changed == 'true'
+      - run: python3 -m maturin --version
+        if: steps.changes.outputs.changed == 'true'
       - name: Upload wheel artifacts
         if: steps.changes.outputs.changed == 'true'
         uses: actions/upload-artifact@v2

Changelog.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 * 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)
 
 ## [0.13.0] - 2022-07-09
 

maturin/__main__.py

@@ -0,0 +1,9 @@
+import os
+import sys
+from pathlib import Path
+import sysconfig
+
+if __name__ == "__main__":
+    scripts_dir = sysconfig.get_path("scripts")
+    maturin = Path(scripts_dir) / "maturin"
+    os.execv(maturin, [str(maturin)] + sys.argv[1:])