Makefile: build-vm now reflects the repo being a flake

Makefile

@@ -34,14 +34,12 @@ clean: ## Clean build artifacts and shutdown running virtual machines
 	exit 0
 
 build-vm: clean ## Build virtual machine for testing
-	nixos-rebuild build-vm \
-		-I nixpkgs=http://nixos.org/channels/nixos-24.05/nixexprs.tar.xz \
-		-I nixos-config=./tests/test-config.nix
+	nix build ".#nixosConfigurations.test.config.system.build.vm"
 
 boot-vm: ## Run virtual machine in current terminal
 	QEMU_KERNEL_PARAMS=console=ttyS0 \
 	QEMU_NET_OPTS=hostfwd=tcp::8080-:80 \
-	./result/bin/run-nixos-vm \
-		-nographic; \
+	QEMU_OPTS=-nographic \
+	./result/bin/run-nixos-vm
 	reset
 

flake.lock

@@ -96,11 +96,11 @@
         "nixpkgs-regression": "nixpkgs-regression"
       },
       "locked": {
-        "lastModified": 1735389339,
-        "narHash": "sha256-JfQXQL0MysQSfvbw7xHto9YbqZ1VQLFgus+c4KYt6xg=",
+        "lastModified": 1735586022,
+        "narHash": "sha256-17Wosqogo+6QMddJ8qo5C9NZug8QRuFO59KyTP/XfFw=",
         "owner": "NixOS",
         "repo": "nix",
-        "rev": "8a3fc27f1b63a08ac983ee46435a56cf49ebaf4a",
+        "rev": "61c3559116f0dccdd0c69cb35f411f2d6016c41a",
         "type": "github"
       },
       "original": {
@@ -158,11 +158,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1735264675,
-        "narHash": "sha256-MgdXpeX2GuJbtlBrH9EdsUeWl/yXEubyvxM1G+yO4Ak=",
+        "lastModified": 1735531152,
+        "narHash": "sha256-As8I+ebItDKtboWgDXYZSIjGlKeqiLBvjxsQHUmAf1Q=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d49da4c08359e3c39c4e27c74ac7ac9b70085966",
+        "rev": "3ffbbdbac0566a0977da3d2657b89cbcfe9a173b",
         "type": "github"
       },
       "original": {