[PATCH v3 02/15] python: expose typing information via PEP 561

[John Snow <jsnow@redhat.com>]

https://www.python.org/dev/peps/pep-0561/#specification

Create 'py.typed' files in each subpackage that indicate to mypy that
this is a typed module, so that users of any of these packages can use
mypy to check their code as well.

Note: Theoretically it's possible to ditch MANIFEST.in in favor of using
package_data in setup.cfg, but I genuinely could not figure out how to
get it to include things from the *source root* into the *package root*;
only how to include things from each subpackage. I tried!

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
---
 python/qemu/machine/py.typed | 0
 python/qemu/qmp/py.typed     | 0
 python/qemu/utils/py.typed   | 0
 python/setup.cfg             | 4 ++++
 4 files changed, 4 insertions(+)
 create mode 100644 python/qemu/machine/py.typed
 create mode 100644 python/qemu/qmp/py.typed
 create mode 100644 python/qemu/utils/py.typed

diff --git a/python/qemu/machine/py.typed b/python/qemu/machine/py.typed
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/python/qemu/qmp/py.typed b/python/qemu/qmp/py.typed
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/python/qemu/utils/py.typed b/python/qemu/utils/py.typed
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/python/setup.cfg b/python/setup.cfg
index 85cecbb41b..db1639c1f2 100644
--- a/python/setup.cfg
+++ b/python/setup.cfg
@@ -19,6 +19,7 @@ classifiers =
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Typing :: Typed
 
 [options]
 python_requires = >= 3.6
@@ -27,6 +28,9 @@ packages =
     qemu.machine
     qemu.utils
 
+[options.package_data]
+* = py.typed
+
 [options.extras_require]
 # Run `pipenv lock --dev` when changing these requirements.
 devel =
-- 
2.31.1