we are able to parse str to int in the kernel

scripts/yt-block/read-helper.nix

@@ -0,0 +1,18 @@
+{stdenv
+, ...
+}: let
+in stdenv.mkDerivation {
+  name = "read-helper";
+
+  src = ./.;
+
+  # Use $CC as it allows for stdenv to reference the correct C compiler
+  buildPhase = ''
+    gcc -fno-stack-protector -D_FORTIFY_SOURCE=0 read-helper.c -o read-helper
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp read-helper $out/bin
+  '';
+}