CYTHON_CACHE_DIR also sets the compiler cache

so far only the inline cache looked at that environment variable

Cython/Compiler/Main.py

@@ -582,7 +582,7 @@ class CompilationOptions(object):
         if 'formal_grammar' in directives and 'formal_grammar' not in kw:
             options['formal_grammar'] = directives['formal_grammar']
         if options['cache'] is True:
-            options['cache'] = os.path.expanduser("~/.cycache")
+            options['cache'] = os.path.join(Utils.get_cython_cache_dir(), 'compiler')
 
         self.__dict__.update(options)
 

Cython/Utils.py

@@ -360,7 +360,8 @@ def long_literal(value):
 
 @cached_function
 def get_cython_cache_dir():
-    """get the cython cache dir
+    r"""
+    Return the base directory containing Cython's caches.
 
     Priority: