[TEST] erp5: use bstr+ustr as builtin string types

As of pygolang-0.1-121-gcb0e6055 runwsgi starts and serves "welcome" page ok, but I did not check further.

/cc @kazuhiko, @jerome

component/pygolang/buildout.cfg

@@ -23,9 +23,9 @@ setup-eggs =
 
 [pygolang-repository]
 recipe  = slapos.recipe.build:gitclone
-repository = https://lab.nexedi.com/nexedi/pygolang.git
-branch   = master
-revision = pygolang-0.1-69-g044deb35
+repository = https://lab.nexedi.com/kirr/pygolang.git
+branch   = y/bstr+x/gpystr
+#revision = pygolang-0.1-69-g044deb35
 location = ${buildout:parts-directory}/pygolang
 git-executable = ${git:location}/bin/git
 

stack/erp5/buildout.cfg

@@ -494,13 +494,13 @@ initialization =
 [erp5-python-interpreter]
 # a python interpreter with all eggs available, usable for the software release but also
 # for external tools (such as python extension in theia).
-# we will also want to use bstr/ustr from gpython as builtin string types, but keep
+# we also want to use bstr/ustr from gpython as builtin string types, but keep
 # the program named as just `python`.
 <= gpython-interpreter
 interpreter = python
 pre-initialization +=
   import os
-  os.environ.setdefault('GPYTHON_STRINGS', 'pystd')    # TODO switch to bstr+ustr
+  os.environ.setdefault('GPYTHON_STRINGS', 'bstr+ustr')
   os.environ.setdefault('GPYTHON_RUNTIME', 'threads')
 eggs += ${eggs:eggs}
 extra-paths += ${eggs:extra-paths}