switched to using nixos-anywhere flake in dev shell

flake.nix

@@ -28,6 +28,11 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    nixos-anywhere = {
+      url = "github:nix-community/nixos-anywhere";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     # disk configurations
     disko = {
       url = "github:nix-community/disko";
@@ -79,6 +84,7 @@
     sops-nix,
     nix-syncthing,
     home-manager,
+    nixos-anywhere,
     impermanence,
     ...
   } @ inputs: let
@@ -131,11 +137,11 @@
       systemsHomes
       // homeSystems;
   in {
-    formatter = forEachPkgs (pkgs: pkgs.alejandra);
+    formatter = forEachPkgs (system: pkgs: pkgs.alejandra);
 
     # templates = import ./templates;
 
-    devShells = forEachPkgs (pkgs: {
+    devShells = forEachPkgs (system: pkgs: {
       default = pkgs.mkShell {
         packages = with pkgs; [
           # for version controlling this repo
@@ -147,7 +153,7 @@
           # for viewing configuration options defined in this repo
           nix-inspect
           # for installing flakes from this repo onto other systems
-          nixos-anywhere
+          nixos-anywhere.packages.${system}.nixos-anywhere
           # for updating disko configurations
           disko
         ];