Added cache to improve speed

Signed-off-by: Dimitris Zlatanidis <d.zlatanidis@gmail.com>

ChangeLog.txt

@@ -1,6 +1,8 @@
 3.9.7 - 02/04/2022
 Fixed:
 - Stderr error output
+Updated:
+- Improve dependencies resolve speed
 
 3.9.6 - 02/04/2022
 Updated:

slpkg/binary/dependency.py

@@ -23,6 +23,7 @@
 
 
 import sys
+from functools import lru_cache
 
 from slpkg.__metadata__ import MetaData as _meta_
 
@@ -49,11 +50,12 @@ class Dependencies:
                 for req in requires:
                     if req and req not in self.black:
                         dependencies.append(req)
-                self.deep_check(dependencies, flag)
+                self.deep_check(tuple(dependencies), tuple(flag))
             return self.dep_results
         else:
             return []
 
+    @lru_cache
     def deep_check(self, dependencies, flag):
         """Checking if dependencies are finnished
         """