add a flask server

flake.nix

@@ -7,14 +7,53 @@
     nixpkgs,
   } @ inputs: let
     system = "x86_64-linux";
-    pkgs = import nixpkgs { inherit system; config.allowUnfree = true;};
+    pkgs = import nixpkgs {
+      inherit system;
+      config.allowUnfree = true;
+    };
   in {
-    packages."${system}".default = pkgs.writeShellApplication {
-      name = "hello_world";
+    devShells.${system}.default = pkgs.mkShell {
+      packages = with pkgs; [
+        python313
+        python313Packages.flask
+        python313Packages.waitress
+      ];
 
-      runtimeInputs = with pkgs; [sane-backends brscan5 ghostscript];
+      shellHook = ''
+        python --version
+        exec zsh
+      '';
+    };
+    packages.${system} = let
+      scanbuddy = pkgs.writeShellApplication {
+        name = "scanbuddy-script";
 
-      text = builtins.readFile ./scanbuddy.bash;
+        runtimeInputs = with pkgs; [sane-backends brscan5 ghostscript];
+
+        text = builtins.readFile ./scanbuddy.bash;
+      };
+      wrapper = pkgs.writeShellApplication {
+        name = "scanbuddy-wrapper";
+
+        text =
+          /*
+          bash
+          */
+          ''
+            #!/usr/bin/env bash
+            readarray -d '_' args < <(printf "%s" "$1")
+
+            scanbuddy "''${args[@]}"
+          '';
+      };
+      package = pkgs.symlinkJoin {
+        name = "scanbuddy";
+        paths = [scanbuddy wrapper];
+      };
+    in {
+      default = package;
+      inherit scanbuddy;
+      inherit wrapper;
     };
   };
 }