fpattern: fix: skip dev output, use explicit repo name

stdenv.mkDerivation (finalAttrs: {

  version = "1.9";

  pname = "fpattern";

  outputs = [ "out" "dev" ];

  src = fetchFromGitHub {

    owner = "Loadmaster";

    repo = finalAttrs.pname;

    repo = "fpattern";

    rev = "v${finalAttrs.version}";

    hash = "sha256-/QvMQCmoocaXfDm3/c3IAPyfZqR6d7IiJ9UoFKZTpVI=";

  };

  installPhase = ''

    runHook preInstall

    mkdir -p $out $dev/include

    cp *.c *.h $dev/include

    mkdir -p $out/include

    cp *.c *.h $out/include

    runHook postInstall

  '';