gnu: Remove uses of deprecated Qemu network configuration.

* gnu/build/vm.scm (load-in-linux-vm): Move Qemu network configuration from
ARCH-SPECIFIC-FLAGS to the Qemu command line.  Use the "-nic" option of Qemu
instead of "-device" and "-net".
* gnu/system/vm.scm (common-qemu-options): Do not add a '-net' command.
(virtual-machine-compiler): Use "-nic user,..." instead of "-net".
* doc/guix.texi (Installing Guix in a VM, Invoking guix system, Running Guix
in a VM): Do the same for examples.

1 files changed, 2 insertions, 8 deletions

diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index 89d685b352..9a9e5bd001 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -131,14 +131,7 @@ the #:references-graphs parameter of 'derivation'."
                       ;; The serial port name differs between emulated
                       ;; architectures/machines.
                       " console="
-                      (if target-arm? "ttyAMA0" "ttyS0"))
-
-      ;; NIC is not supported on ARM "virt" machine, so use a user mode
-      ;; network stack instead.
-      ,@(if target-arm?
-            '("-device" "virtio-net-pci,netdev=mynet"
-              "-netdev" "user,id=mynet")
-            '("-net" "nic,model=virtio"))))
+                      (if target-arm? "ttyAMA0" "ttyS0"))))
 
   (when make-disk-image?
     (format #t "creating ~a image of ~,2f MiB...~%"
@@ -163,6 +156,7 @@ the #:references-graphs parameter of 'derivation'."
          ;; CPU with the maximum possible feature set otherwise.
          "-cpu" "max"
          "-m" (number->string memory-size)
+         "-nic" "user,model=virtio-net-pci"
          "-object" "rng-random,filename=/dev/urandom,id=guixsd-vm-rng"
          "-device" "virtio-rng-pci,rng=guixsd-vm-rng"
          "-virtfs"