ch-runner: run CH in bwrap

Albeit rather relaxed

shell.nix

@@ -1,13 +1,30 @@
 with import <nixpkgs> { };
 
+let
+  uvmPkgs = callPackage ./pkgs { };
+in
 mkShell.override { stdenv = stdenvNoCC; } {
-  packages = map lib.getBin [
-    cloud-hypervisor
-    virtiofsd
-    crosvm # virtio-gpu
-    npins
-  ] ++ [
-    man-pages
-    linux-manual
+  inputsFrom = with uvmPkgs; [
+    ch-proxy
+    taps
+    writeErofsLayers
+    request-usb
   ];
+  packages =
+    map lib.getBin [
+      cloud-hypervisor
+      virtiofsd
+      crosvm # virtio-gpu
+      npins
+      strace
+      python3
+      execline
+      s6
+      wayland-proxy-virtwl
+      uvmPkgs.taps
+    ]
+    ++ [
+      man-pages
+      linux-manual
+    ];
 }