Back out sys.implementation.cache_tag = None

packages/pytest/meta.yaml

@@ -8,7 +8,6 @@ source:
 
   patches:
     - patches/named-tmp-and-rm-dup2.patch
-    - patches/workaround_get_tag.patch
 
 requirements:
   run:

packages/pytest/patches/workaround_get_tag.patch

-diff -ur pytest-3.6.3-bak/src/_pytest/assertion/rewrite.py pytest-3.6.3/src/_pytest/assertion/rewrite.py
---- pytest-3.6.3-bak/src/_pytest/assertion/rewrite.py	2018-11-08 14:58:43.984236991 -0500
-+++ pytest-3.6.3/src/_pytest/assertion/rewrite.py	2018-11-08 14:59:59.881455735 -0500
-@@ -19,7 +19,7 @@
- 
- 
- # pytest caches rewritten pycs in __pycache__.
--if hasattr(imp, "get_tag"):
-+if hasattr(imp, "get_tag") and imp.get_tag() is not None:
-     PYTEST_TAG = imp.get_tag() + "-PYTEST"
- else:
-     if hasattr(sys, "pypy_version_info"):

src/main.c

@@ -57,19 +57,6 @@ main(int argc, char** argv)
   if (PyObject_SetAttrString(sys, "dont_write_bytecode", Py_True)) {
     return 1;
   }
-
-  // By disabling the cache_tag, Python won't look for cached bytecode files
-  // when importing modules, which saves on filesystem I/O time
-  PyObject* implementation = PyObject_GetAttrString(sys, "implementation");
-  if (implementation == NULL) {
-    return 1;
-  }
-
-  if (PyObject_SetAttrString(implementation, "cache_tag", Py_None)) {
-    return 1;
-  }
-
-  Py_DECREF(implementation);
   Py_DECREF(sys);
 
   if (js2python_init() || JsImport_init() || JsProxy_init() ||