weasel: add custom nix-serve

/home is a nfs mount, which does not support extra filesystem arguments
needed to run podman. We need to have a local home.

m/weasel/configuration.nix

@@ -35,16 +35,15 @@
 
   services.nix-serve = {
     enable = true;
-    bindAddress = "0.0.0.0";
+    # Only listen locally, as we serve it via ssh
+    bindAddress = "127.0.0.1";
     port = 5000;
-    package = pkgs.haskell.lib.overrideSrc (pkgs.haskell.packages.ghc96.nix-serve-ng.override { nix = pkgs.nixVersions.nix_2_28; }) {
+    package = pkgs.nix-serve-ng.overrideAttrs (oldAttrs: {
       src = pkgs.fetchgit {
         url = "https://jungle.bsc.es/git/abonerib/nix-serve-ng.git";
-        rev = "b4a36218e5c3bbef28e83db5823afab79c85bea6";
+        hash = "sha256-N6c3NozYqAGwmjf+k5GHOZzlcquDntrJwsZQ7O2sqtQ=";
-        hash = "sha256-l6sifaEA6HCjhPggORvfoP25lTa+fCtEP+4VgkoUL90=";
-      };
-      version = "unstable";
       };
+    });
 
     secretKeyFile = "/var/cache-priv-key.pem";
     # Public key: