Preserve file permissions from template

run.py

@@ -81,6 +81,8 @@ def convert_template(env, template, key_value_store, out):
     with open(template, 'r') as file:
         source = file.read()
 
+    template_permissions = oct(os.stat(template).st_mode & 0o777)
+
     template = env.from_string(source)
     rendered = template.render(**key_value_store)
 
@@ -101,6 +103,7 @@ def convert_template(env, template, key_value_store, out):
             return
 
     dryrun_safe_write(out, rendered)
+    dryrun_safe_chmod(out, template_permissions)
 
     if args.link:
         first_line = source.split('\n')[0]
@@ -134,6 +137,12 @@ def dryrun_safe_write(location, content):
     else:
         print(f'Would write to `{location}`.')
 
+def dryrun_safe_chmod(location, permissions):
+    if not args.dryrun:
+        os.chmod(location, permissions)
+    else:
+        print(f'Would change the permissions of {location} to {permissions}')
+
 def dryrun_safe_remove(location):
     if not args.dryrun:
         os.remove(location)