test: add virt midi

Author: gfauredev

.github/workflows/validation.yml

@@ -19,6 +19,13 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
+      - name: Set up virtual MIDI device
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y alsa-utils
+          sudo modprobe snd-virmidi
+          aconnect -l
+
       # - name: Config Cachix TODO
       #   uses: cachix/cachix-action@v15
       #   with: