Fix inport errors and maintain compatibility with python 3.5x)

package_manager/subproc.py

@@ -6,8 +6,8 @@ import logging
 import pathlib
 import shutil
 import json
+from .bpkg import utils
 from .bpkg import Package, Repository
-
 from .messages import *
 from .bpkg.exceptions import *
 
@@ -114,7 +114,7 @@ def _install(pipe_to_blender, pkgpath: pathlib.Path, dest: pathlib.Path, searchp
     # The following is adapted from `addon_install` in bl_operators/wm.py
 
     # check to see if the file is in compressed format (.zip)
-    if zipfile.is_zipfile(pkgpath):
+    if zipfile.is_zipfile(str(pkgpath)):
         log.debug("Package is zipfile")
         try:
             file_to_extract = zipfile.ZipFile(str(pkgpath), 'r')
@@ -135,7 +135,7 @@ def _install(pipe_to_blender, pkgpath: pathlib.Path, dest: pathlib.Path, searchp
         backups = []
         for conflict in conflicts:
             log.debug("Creating backup of conflict %s", conflict)
-            backups.append(InplaceBackup(conflict))
+            backups.append(utils.InplaceBackup(conflict))
 
         try:
             file_to_extract.extractall(str(dest))
@@ -152,7 +152,7 @@ def _install(pipe_to_blender, pkgpath: pathlib.Path, dest: pathlib.Path, searchp
         dest_file = (dest / pkgpath.name)
 
         if dest_file.exists():
-            backup = InplaceBackup(dest_file)
+            backup = utils.InplaceBackup(dest_file)
 
         try:
             shutil.copyfile(str(pkgpath), str(dest_file))