[pygobject: 1/3] Add PEP518/pyproject.toml file

[Christoph Reiter <creiter src gnome org>]

commit b4ff23367a58e220fc0f3c4c277c2752b8f19be8
Author: James Tocknell <aragilar gmail com>
Date:   Thu Mar 22 15:20:39 2018 +1100

    Add PEP518/pyproject.toml file

 MANIFEST.in    | 1 +
 pyproject.toml | 2 ++
 2 files changed, 3 insertions(+)
---
diff --git a/MANIFEST.in b/MANIFEST.in
index e69e3144..5f383eb4 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,5 @@
 include setup.cfg
+include pyproject.toml
 include *.am
 include autogen.sh
 include configure.ac
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..830e77af
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,2 @@
+[build-system]
+requires = ["setuptools", "wheel", "pycairo"]