infra: Unbreak nixops

Author: rvl

infra/flake.nix

@@ -325,7 +325,7 @@
     };
 
     nix = pkgs.pkgsUnstable.nixUnstable;
-    nixops = pkgs.pkgsUnstable.nixopsUnstable;
+    nixops = pkgs.nixopsUnstable;
 
     flake = {
       packages = shellScripts // lib.mapAttrs
@@ -360,6 +360,8 @@
             export NIXOPS_STATE="$top/.state/${NIXOPS_DEPLOYMENT}.nixops";
             export BITWARDENCLI_APPDATA_DIR="$top/.state";
 
+            export NIX_PATH=nixpkgs=${toString nixpkgs}
+
             echo "NixOps: ${nixops.version}"
             echo "State file: $(realpath --relative-to="$top" $NIXOPS_STATE)"
             echo