2 files changed, 65 insertions, 0 deletions
diff --git a/pkgs/os-specific/linux/spectrum/vm/app/default.nix b/pkgs/os-specific/linux/spectrum/vm/app/default.nix
new file mode 100644
index 00000000000..65dbb51f5e1
--- /dev/null
+++ b/pkgs/os-specific/linux/spectrum/vm/app/default.nix
@@ -0,0 +1,63 @@
+{ runCommand, writeScript, writeText, makeRootfs
+, busybox, execline, linux_vm, jq, iproute
+}:
+
+runCommand "vm-app" rec {
+  linux = linux_vm;
+
+  login = writeScript "login" ''
+    #! ${execline}/bin/execlineb -s0
+    unexport !
+    ${busybox}/bin/login -p -f root $@
+  '';
+
+  rootfs = makeRootfs {
+    rcServices.ok-all = {
+      type = writeText "ok-all-type" ''
+        bundle
+      '';
+      contents = writeText "ok-all-contents" ''
+        net
+      '';
+    };
+
+    rcServices.net = {
+      type = writeText "net-type" ''
+        oneshot
+      '';
+      up = writeText "net-up" ''
+        backtick -i LOCAL_IP {
+          pipeline { ip -j link show eth0 }
+          pipeline { jq -r ".[0].address | split(\":\") | .[3:6] | \"0x\" + .[]" }
+          xargs printf "100.%d.%d.%d"
+        }
+        importas -iu LOCAL_IP LOCAL_IP
+
+        backtick -i REMOTE_IP {
+          jq -jn --arg localip $LOCAL_IP
+            "$localip | split(\".\") | .[3] |= tonumber - 1 | join(\".\")"
+        }
+        importas -iu REMOTE_IP REMOTE_IP
+
+        if { ip address add ''${LOCAL_IP}/31 dev eth0 }
+        if { ip link set eth0 up }
+        ip route add default via $REMOTE_IP
+      '';
+    };
+
+    services.getty.run = writeScript "getty-run" ''
+      #! ${execline}/bin/execlineb -P
+      ${busybox}/bin/getty -i -n -l ${login} 38400 ttyS0
+    '';
+
+    path = [ iproute jq ];
+  };
+
+  inherit (rootfs) squashfs;
+  vmID = 0;
+} ''
+  mkdir $out
+  echo "$vmID" > $out/vm-id
+  ln -s $linux/bzImage $out/kernel
+  ln -s $squashfs $out/squashfs
+''
diff --git a/pkgs/os-specific/linux/spectrum/vm/default.nix b/pkgs/os-specific/linux/spectrum/vm/default.nix
index c4ff729cb8a..f5d591a960a 100644
--- a/pkgs/os-specific/linux/spectrum/vm/default.nix
+++ b/pkgs/os-specific/linux/spectrum/vm/default.nix
@@ -1,6 +1,8 @@
 { callPackage }:
 
 {
+  app = callPackage ./app { };
+
   comp = callPackage ./comp { };
 
   net = callPackage ./net { };