feat(bbuddy): evdev barcode scanner client

packages/barcodebuddy/scanner-python.nix

@@ -0,0 +1,47 @@
+{
+  stdenvNoCC,
+  makeWrapper,
+  barcodebuddy,
+  barcodebuddy-scanner,
+  screen,
+  lib,
+  enableRequests ? true,
+  enablePhp ? false,
+  php,
+  python3,
+  ...
+}: let
+  inherit (lib.lists) optional optionals;
+  inherit (lib.strings) makeBinPath;
+  python = python3.withPackages (
+    p:
+      [p.evdev]
+      ++ optional enableRequests p.requests
+  );
+in
+  stdenvNoCC.mkDerivation {
+    pname = "barcodebuddy-scanner.py";
+    inherit (barcodebuddy) version src;
+    inherit (barcodebuddy-scanner) patches meta;
+
+    skipConfigure = true;
+    skipBuild = true;
+
+    nativeBuildInputs = [
+      makeWrapper
+    ];
+
+    buildInputs = [python];
+
+    scannerPath = makeBinPath (
+      optionals enablePhp [screen php]
+    );
+    ${
+      if enablePhp
+      then "barcodebuddyScript"
+      else null
+    } = "${barcodebuddy}/index.php";
+
+    scannerSource = "example/grabInput.py";
+    inherit (barcodebuddy-scanner) installPhase postInstall;
+  }