gilab-sr fixup: remove usage of z3c.recipe.scripts which doesn't work with buildout2

software/gitlab/software.cfg

@@ -39,6 +39,7 @@ parts =
     python-4gitlab
     gitlab-shell/vendor
     gitlab/vendor/bundle
+    github-markup-patch
     gitlab-workhorse
     git-backup
 
@@ -74,11 +75,7 @@ md5sum = 3cd1dca37be60668f482545716923b72
 
 # python with eggs, that will be used in gitlab
 [python-4gitlab]
-# NOTE cannot use zc.recipe.egg - github-markup invoks `python2 -S` and
-# interpreter generated by zc.recipe.egg cannot handle that.
-recipe  = z3c.recipe.scripts
-# NOTE github-markup invokes it as `python2`, that's why we are naming it this way
-# https://github.com/github/markup/blob/5393ae93/lib/github/markups.rb#L36
+recipe  = zc.recipe.egg
 interpreter = python2
 eggs    =
     docutils
@@ -152,7 +149,20 @@ repository = https://lab.nexedi.com/nexedi/gitlab-workhorse.git
 revision = v0.7.1-5-gd23a3247829fc3200e3dc784dcd57b5a0febac48
 location = ${buildout:parts-directory}/gitlab-workhorse
 
-
+# Patch github markup to not call "python2 -S /path/to/rest2html" but only "python2 /path/to/rest2html"
+# NOTE github-markup invokes it as `python2`, that's why we are naming it this way
+# https://github.com/github/markup/blob/5393ae93/lib/github/markups.rb#L36
+[github-markup-patch]
+recipe = plone.recipe.command
+command = 
+  files=$(ls ${gitlab-repository:location}/vendor/bundle/ruby/*/gems/github-markup-*/lib/github/markups.rb) || true
+  if [ ! -z $files ]; then
+    for file in $files; do
+      sed -i 's#python2 -S#python2#' $file
+    done
+  fi
+update-command = ${:command}
+stop-on-error = True
 
 # build needed-by-gitlab gems via bundler
 [gitlab/vendor/bundle]