gnuradio.pkgs: init

- Write a `mkDerivation` and `mkDerivationWith` function for gnuradio,
  like qt5.
- qradiolink, gqrx: Use gnuradio's callPackage and mkDerivation.
- Use gnuradio.callPackage to define all gnuradio.pkgs.
- Move all gnuradio packages expressions to pkgs/development/gnuradio-modules/ -
  modeled after Python's.
- Add more paths to gnuradio's wrapper - add the extra packages as
  python modules, and add their executables with proper env vars
  wrapping.

Co-authored-by: Frederik Rietdijk <fridh@fridh.nl>

pkgs/development/gnuradio-modules/gsm/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, mkDerivation
+, fetchFromGitHub
+, cmake
+, pkg-config
+, cppunit
+, swig
+, boost
+, log4cpp
+, python
+, libosmocore
+, osmosdr
+}:
+
+mkDerivation {
+  pname = "gr-gsm";
+  version = "2016-08-25";
+  src = fetchFromGitHub {
+    owner = "ptrkrysik";
+    repo = "gr-gsm";
+    rev = "3ca05e6914ef29eb536da5dbec323701fbc2050d";
+    sha256 = "13nnq927kpf91iqccr8db9ripy5czjl5jiyivizn6bia0bam2pvx";
+  };
+  disabledForGRafter = "3.8";
+
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+    swig
+    python
+  ];
+
+  buildInputs = [
+    cppunit
+    log4cpp
+    boost
+    libosmocore
+    osmosdr
+  ];
+
+  meta = with lib; {
+    description = "Gnuradio block for gsm";
+    homepage = "https://github.com/ptrkrysik/gr-gsm";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ mog ];
+  };
+}