+edit: possibly related:
Seems sudo behaves the same on SfOs with my configuration as it does elsewhere (prompts for the password once (or once in a while?)). Maybe there’s some other configuration that gets rid of pswd prompts completely(?)
My configuration :
Summary
## Same thing without a password
%wheel ALL=(ALL:ALL) NOPASSWD: ALL
## Uncomment to allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
nemo ALL=(ALL) ALL
## Additional edits for specific privileged commands
nemo ALL = NOPASSWD: /usr/bin/dbus-send
nemo ALL = NOPASSWD: /bin/systemctl
nemo ALL = NOPASSWD: /usr/bin/connmanctl
nemo ALL = NOPASSWD: /usr/bin/qCommand
nemo ALL = NOPASSWD: /usr/bin/harbour-situations2application