Upgrade to Cython 0.28.4

build/pkgs/cython/checksums.ini

@@ -1,4 +1,4 @@
 tarball=Cython-VERSION.tar.gz
-sha1=48431c9d33b656215a65df3a80817c80cf43e006
-md5=c549effadb52d90bdcb1affc1e5dbb97
-cksum=2543356382
+sha1=b965c1efa2236fb57470d749438f22fbe1a23b53
+md5=fa01ba71b1e3136b0f12e3ed8958ea02
+cksum=4053024504

build/pkgs/cython/package-version.txt

@@ -1 +1 @@
-0.28.1
+0.28.4

build/pkgs/cython/patches/module_init_cline.patch

@@ -0,0 +1,19 @@
+Allow C line in traceback also during module init
+See https://github.com/cython/cython/pull/2493
+
+diff --git a/Cython/Compiler/ModuleNode.py b/Cython/Compiler/ModuleNode.py
+index 64cec6d..9d700cc 100644
+--- a/Cython/Compiler/ModuleNode.py
++++ b/Cython/Compiler/ModuleNode.py
+@@ -2451,10 +2451,9 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
+         code.put_label(code.error_label)
+         for cname, type in code.funcstate.all_managed_temps():
+             code.put_xdecref(cname, type)
+-        # module state might not be ready for traceback generation with C-line handling yet
+         code.putln('if (%s) {' % env.module_cname)
+         code.putln('if (%s) {' % env.module_dict_cname)
+-        code.put_add_traceback("init %s" % env.qualified_name, include_cline=False)
++        code.put_add_traceback("init %s" % env.qualified_name)
+         code.globalstate.use_utility_code(Nodes.traceback_utility_code)
+         # Module reference and module dict are in global variables which might still be needed
+         # for cleanup, atexit code, etc., so leaking is better than crashing.