speedup integration check

inary/operations/install.py

@@ -124,7 +124,7 @@ def install_pkg_names(A, reinstall=False, extra=False):
     if conflicts:
         operations.remove.remove_conflicting_packages(conflicts)
 
-    install_files = []
+    install_files = {}
     file_conflicts = []
     for path in paths:
         pkg = inary.package.Package(path)
@@ -135,8 +135,12 @@ def install_pkg_names(A, reinstall=False, extra=False):
                         "} / {} ] => {}").format(paths.index(path) +
                                                  1, len(paths), pkg.metadata.package.name), color="yellow")
         for file in pkg.files.list:
-            if file not in install_files:
-                install_files.append(file)
+            sha = util.sha1_data(file.path)[0:5]
+            if sha not in install_files:
+                    install_files[sha] = []
+            print(sha)
+            if file not in install_files[sha]:
+                install_files[sha].append(file)
             else:
                 file_conflicts.append(file)
         ctx.ui.info(