component/pygolang: force to use a fixed cython version until pygolang supports cython3

component/pygolang/buildout.cfg

@@ -10,6 +10,14 @@ parts =
     pygolang
     gpython-interpreter
 
+[cython-for-pygolang]
+recipe  = slapos.recipe.build:download-unpacked
+url = https://github.com/cython/cython/releases/download/0.29.35/Cython-0.29.35.tar.gz
+md5sum = 138dba31e20e178b431a2e403154f906
+
+
+[pygolang-env]
+PYTHONPATH=${cython-for-pygolang:location}
 
 # pygolang is installed from git checkout
 [pygolang]
@@ -17,9 +25,9 @@ recipe  = zc.recipe.egg:develop
 setup   = ${pygolang-repository:location}
 egg     = pygolang
 setup-eggs =
-    ${cython:egg}
     setuptools-dso
     gevent
+environment = pygolang-env
 
 [pygolang-repository]
 recipe  = slapos.recipe.build:gitclone

component/wendelin.core/buildout.cfg

@@ -19,8 +19,15 @@ parts =
 recipe = zc.recipe.egg:develop
 setup = ${wendelin.core-repository:location}
 egg = wendelin.core
+# we can't directly set pygolang[pyx.build] as setup-egg because buildout will
+# complain that the cython version is wrong so we install the dependencies of
+# pygolang[pyx.build] manually and we will simply point to the pygolang
+# repository in PYTHONPATH
 setup-eggs =
-    ${pygolang:egg}[pyx.build]
+  six
+  decorator
+  ${pygolang:setup-eggs}
+  Importing
 environment = wendelin.core-env
 
 # dependent eggs that must come through in-tree recipes
@@ -29,11 +36,11 @@ depends =
     ${zodbtools:egg}
     ${numpy:egg}
 
-
 [wendelin.core-env]
 # wendelin.core needs git(dev) and go to build
 PATH = ${git:location}/bin:%(PATH)s
 GO   = ${go:exe}
+PYTHONPATH=${cython-for-pygolang:location}:${pygolang:setup}
 
 # wcfs needs this:
 [gowork]

stack/slapos.cfg

@@ -194,6 +194,7 @@ contextlib2 = 0.6.0.post1
 croniter = 0.3.25
 cryptography = 3.3.2+SlapOSPatched001
 cycler = 0.11.0
+cython = 3.0.11
 dataclasses = 0.8
 dateparser = 0.7.6
 debugpy = 1.8.1
@@ -426,6 +427,7 @@ zope.testrunner = 6.6
 
 [versions:sys.version_info < (3,10)]
 # keep old statsmodels by default until slapos.toolbox is updated
+# this statsmodels need an old cython
 statsmodels = 0.11.1
 
 # this is mostly needed for slapos-node
@@ -448,6 +450,7 @@ certifi = 2020.4.5.1
 charset-normalizer = 2.0.12
 click = 6.7
 cycler = 0.10.0
+cython = 0.29.35
 distro = 1.6.0
 feedparser = 5.2.1
 Flask = 1.1.2