welle-io: add soapysdr support

pkgs/applications/misc/welle-io/default.nix

@@ -1,6 +1,6 @@
 { stdenv, buildEnv, fetchFromGitHub, cmake, pkgconfig
 , qtbase, qtcharts, qtmultimedia, qtquickcontrols, qtquickcontrols2
-, faad2, rtl-sdr, libusb, fftwSinglePrec }:
+, faad2, rtl-sdr, soapysdr-with-plugins, libusb, fftwSinglePrec }:
 let
 
   version = "1.0-rc2";
@@ -28,10 +28,11 @@ in stdenv.mkDerivation {
     qtquickcontrols
     qtquickcontrols2
     rtl-sdr
+    soapysdr-with-plugins
   ];
 
   cmakeFlags = [
-    "-DRTLSDR=true"
+    "-DRTLSDR=true" "-DSOAPYSDR=true"
   ];
 
   enableParallelBuilding = true;