python2.7: mangle shebang of installed python scripts

component/python-2.7/buildout.cfg

@@ -56,6 +56,16 @@ configure-options =
 # Profiled build:
 make-binary =
 make-targets = make profile-opt && make install
+# Mangle shebang to use installed Python. This is not only a convenience:
+# when building system packages (e.g. re6st-node using OBS), some OS like
+# recent RedHat would otherwise mangle them, either failing ('python' is
+# ambiguous and 'python2' is not supported anymore) or replacing with
+# something that's really wrong (/usr/bin/python...).
+post-install = cd '${:prefix}' &&
+  find -executable -type f -print0 |
+  xargs -0 grep -I -m 1 '' |
+  sed -n 's,:#! */usr/bin/env \+python2\?$,,p' |
+  xargs -d '\n' sed -i '1s,.*,#!${:executable},'
 
 extra-ldflags =
 # the entry "-Wl,-rpath=${file:location}/lib" below is needed by python-magic,