[improvement][aur] preventing the dependencies checking algorithm to add duplicates

CHANGELOG.md

@@ -9,6 +9,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Web
     - not able to inject javascript fixes ( WhatsApp Web not working) [#74](https://github.com/vinifmor/bauh/issues/74)
 
+### Improvements
+- AUR
+    - preventing the dependencies checking algorithm to add duplicates
+
 ### i18n
 - Russian ( ru ): 
     - [leoneii](https://github.com/leoneii) - PRs:  [#66](https://github.com/vinifmor/bauh/pull/66), [#67](https://github.com/vinifmor/bauh/pull/67), [#68](https://github.com/vinifmor/bauh/pull/68)

bauh/gems/arch/controller.py

@@ -553,11 +553,14 @@ class ArchManager(SoftwareManager):
                                 return
 
                         for dep in missing_subdeps:
-                            sorted_deps.append(dep)
+                            if dep not in sorted_deps:
+                                sorted_deps.append(dep)
 
         for dep, repo in known_deps.items():
             if repo != 'aur':
-                sorted_deps.append((dep, repo))
+                data = (dep, repo)
+                if data not in sorted_deps:
+                    sorted_deps.append(data)
 
         for dep in aur_deps:
             sorted_deps.append((dep, 'aur'))