Add script to fix msi generation

The generated msi will be modified so it can be installed by any user.

setup.py

@@ -1,5 +1,7 @@
 import distutils, distutils.util
+import msilib
 import os
+import pathlib
 import setuptools
 import sys
 
@@ -59,6 +61,73 @@ if os.name == "nt":
                     ],
             )
 
+
+    # -------------------------------------------------------------------------
+    # Modifications to allow for a non-admin-required msi
+    print("modifying final msi '{}' for standard user installation" \
+            .format(msi_filepath))
+    if not msi_filepath.exists():
+        print("msi file does not exist")
+    else:
+        try:
+            db = msilib.OpenDatabase(
+                str(msi_filepath),
+                msilib.MSIDBOPEN_TRANSACT,
+                ) 
+
+            si = db.GetSummaryInformation(20)
+            cur_wc = si.GetProperty(msilib.PID_WORDCOUNT)
+            si.SetProperty(
+                msilib.PID_WORDCOUNT,
+                cur_wc | 0b1000,
+                )
+            si.SetProperty(
+                msilib.PID_AUTHOR,
+                "{} - {}" \
+                        .format(
+                            lokrez.version.ENTITY,
+                            lokrez.version.AUTHOR,
+                            ),
+                        )
+            si.Persist()
+
+            # Install for the current user only
+            vi = db.OpenView(
+                "DELETE FROM `Property` WHERE `Property`.`Property` = " \
+                "'ALLUSERS'",
+                )
+            vi.Execute(None)
+            vi.Close()
+
+            # Add the manufacturer name
+            vi = db.OpenView(
+                "UPDATE `Property` SET `Property`.`Value`='{} - {}' WHERE " \
+                "`Property`.`Property` = 'Manufacturer'" \
+                .format(
+                    lokrez.version.ENTITY,
+                    lokrez.version.AUTHOR,
+                    ),
+                )
+            vi.Execute(None)
+            vi.Close()
+
+            # Update Path env variable for the user only
+            vi = db.OpenView(
+                    "UPDATE `Environment` SET `Environment`.`Name`='=-Path' " \
+                    "WHERE `Environment`.`Environment` = 'E_PATH'",
+                    )
+            vi.Execute(None)
+            vi.Close()
+
+            db.Commit()
+            db.Close()
+
+        except Exception as e:
+            print("fail")
+            print(str(e))
+            print(e.args)
+            raise
+
     sys.exit(0)
 
 # Linux build