libvirt: use env var to specify uri

Signed-off-by: Myned <dev@bjork.tech>

options/custom/programs/waybar/default.nix

@@ -340,7 +340,7 @@ in {
         text = ''
           #! /usr/bin/env ${bash}
 
-          case "$(virsh --connect qemu:///system domstate myndows)" in
+          case "$(virsh domstate myndows)" in
             'running')
               ${echo} 
               ${echo} Online

options/custom/scripts/vm.sh

@@ -3,8 +3,6 @@
 # Start/resume VM if needed and launch viewer
 #?? man xfreerdp
 
-function virsh() { command virsh --connect qemu:///system "$@"; }
-
 state="$(virsh domstate myndows)"
 
 if [[ "$state" == 'paused' ]]; then

options/custom/settings/dconf/apps.nix

@@ -149,12 +149,6 @@ in
         forcepoweroff = mkBoolean false;
       };
 
-      "org/virt-manager/virt-manager/connections" = {
-        #?? [as]
-        autoconnect = mkArray type.string [ "qemu:///system" ];
-        uris = mkArray type.string [ "qemu:///system" ];
-      };
-
       "org/virt-manager/virt-manager/console" = {
         auto-redirect = mkBoolean false;
         resize-guest = mkInt32 1;

options/custom/settings/vm.nix

@@ -19,13 +19,6 @@ in
   };
 
   config = mkIf cfg.enable {
-    # https://github.com/virt-manager/virt-manager
-    programs.virt-manager.enable = cfg.libvirt;
-
-    users.users.${config.custom.username}.extraGroups =
-      lib.optionals cfg.libvirt [ "libvirtd" ]
-      ++ lib.optionals cfg.virtualbox [ "vboxusers" ];
-
     virtualisation = {
       # https://wiki.nixos.org/wiki/Libvirt
       # https://libvirt.org
@@ -76,6 +69,16 @@ in
       };
     };
 
+    # https://github.com/virt-manager/virt-manager
+    programs.virt-manager.enable = cfg.libvirt;
+
+    # https://libvirt.org/uri.html#default-uri-choice
+    environment.sessionVariables.LIBVIRT_DEFAULT_URI = mkIf cfg.libvirt "qemu:///system";
+
+    users.users.${config.custom.username}.extraGroups =
+      lib.optionals cfg.libvirt ["libvirtd"]
+      ++ lib.optionals cfg.virtualbox ["vboxusers"];
+
     systemd = mkIf cfg.libvirt {
       # Fix resume messages polluting tty
       services.libvirt-guests.serviceConfig.StandardOutput = "journal";