build: merge branch 'ss/python-improvements'

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/540

.gitlab-ci.yml

@@ -74,11 +74,12 @@ stages:
     - date '+%Y%m%d-%H%M%S'; test "$NM_BUILD_TARBALL" != 1 || mv /tmp/NetworkManager-1*.tar.xz /tmp/NetworkManager-1*.src.rpm ./
 
 checkpatch:
-  image: fedora:29
+  image: fedora:32
   stage: test
   script:
-    - date '+%Y%m%d-%H%M%S'; dnf install -y git
+    - date '+%Y%m%d-%H%M%S'; dnf install -y git black
     - date '+%Y%m%d-%H%M%S'; NM_CHECKPATCH_FETCH_UPSTREAM=1 contrib/scripts/checkpatch-feature-branch.sh 2>&1 | tee checkpatch-out.txt
+    - date '+%Y%m%d-%H%M%S'; black --check .
   allow_failure: true
   artifacts:
     when: on_failure

Makefile.am

@@ -5236,6 +5236,12 @@ CLEANFILES += \
 
 include Makefile.examples
 
+if WITH_PYTHON_BLACK
+check-python-black:
+	test "$$NMTST_SKIP_PYTHON_BLACK" != 1 && $(BLACK) --check $(top_srcdir)
+check_local += check-python-black
+endif
+
 ###############################################################################
 
 check-local: $(check_local)

configure.ac

@@ -1272,6 +1272,10 @@ else
 	have_introspection=no
 fi
 
+# check for python black. And check if all files are formatted with python black
+AC_PATH_PROG(BLACK, black)
+AM_CONDITIONAL(WITH_PYTHON_BLACK, test "${BLACK}" != "")
+
 # check for pregenerated manpages and documentation to be installed
 use_pregen_docs=no
 if test "$build_docs" != "yes" -a \