References: bsc#1177763
When virt-manager is launched by a user (non-root) for the first
time and no connection was previously defined, the user path
typically does not have /usr/sbin and will therefore fail to find
the installed libvirtd.


--- virt-manager-3.1.0/virtManager/lib/connectauth.py.orig	2020-10-23 13:18:59.894366558 -0600
+++ virt-manager-3.1.0/virtManager/lib/connectauth.py	2020-10-23 13:20:03.050368102 -0600
@@ -204,7 +204,8 @@ def connect_error(conn, errmsg, tb, warn
 ##################################
 
 def setup_first_uri(config, tryuri):
-    libvirtd_installed = bool(shutil.which("libvirtd"))
+    # Add /usr/sbin to the path in case non-root user launches virt-manager
+    libvirtd_installed = bool(shutil.which("libvirtd", path=os.environ['PATH'] + os.pathsep + "/usr/sbin"))
     if config.CLITestOptions.fake_no_libvirtd:
         libvirtd_installed = False