From a94cf977c0724626b87a317172cc335092ab0a32 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jelmer=20Vernoo=C4=B3?= <jelmer@jelmer.uk>
Date: Fri, 19 Mar 2021 18:13:13 +0000
Subject: [PATCH] only look for build-backend when pyproject is present.

---
 ognibuild/buildsystem.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ognibuild/buildsystem.py b/ognibuild/buildsystem.py
index a123ad4..2b6404d 100644
--- a/ognibuild/buildsystem.py
+++ b/ognibuild/buildsystem.py
@@ -218,8 +218,9 @@ class SetupPy(BuildSystem):
             self.pyproject = self.load_toml()
         except FileNotFoundError:
             self.pyproject = None
-
-        self.build_backend = self.pyproject.get("build-system", {}).get('build-backend')
+            self.build_backend = None
+        else:
+            self.build_backend = self.pyproject.get("build-system", {}).get('build-backend')
 
     def load_toml(self):
         import toml