fix PR comments

flake.nix

@@ -1,24 +0,0 @@
-{
-  description = "A Nix-flake-based Python development environment";
-
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
-
-  outputs = { self, nixpkgs }:
-    let
-      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
-      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
-        pkgs = import nixpkgs { inherit system; };
-      });
-    in
-    {
-      devShells = forEachSupportedSystem ({ pkgs }: {
-        default = pkgs.mkShell {
-          packages = with pkgs; [ python311 virtualenv borgbackup ] ++
-            (with pkgs.python311Packages; [ apprise pipx tox isort flexmock ]);
-          shellHook = ''
-            export PATH=~/.local/bin/:$PATH
-          '';
-        };
-      });
-    };
-}