Merge remote-tracking branch 'upstream/master' into zope4py2

component/slapos/obs.cfg

@@ -31,7 +31,6 @@ init +=
   assert buildout['directory'] == buildout['destdir'] + buildout['rootdir'], (
     "Buildout MUST BE launched in destdir/rootdir (currently launched in %s but should be launched in %s)" %
     (buildout['directory'], buildout['destdir'] + buildout['rootdir']))
-part = python3.7
 
 [python3-common]
 configure-options +=
@@ -39,6 +38,10 @@ configure-options +=
 environment +=
   DESTDIR=${buildout:destdir}
 
+# Force python3.7 for a while to be compatible with more SR
+[python3]
+<= python3.7
+
 [bison]
 configure-options +=
   --prefix=${buildout:rootdir}/parts/${:_buildout_section_name_}