diff --git a/pkgs/default.nix b/pkgs/default.nix

index d6adb4566526e0944ecb207dede2b5ff0f73e2c6..92c27cce418b5195a62a60c8b8138bd479d74069 100644

--- a/pkgs/default.nix

+++ b/pkgs/default.nix

@@ -267,6 +267,7 @@ gnsstk-apps = callPackage ./gnss/gnsstk-apps { };

 gps-sdr-sim = callPackage ./gnss/gps-sdr-sim { };

 gpsdate = callPackage ./gnss/gpsdate { };

 rtklib = callPackage ./gnss/rtklib { };

• rtklib-demo5 = callPackage ./gnss/rtklib/demo5.nix { };

 visualgps = libsForQt5.callPackage ./gnss/visualgps { };

 ### GPX

diff --git a/pkgs/gnss/rtklib/demo5.nix b/pkgs/gnss/rtklib/demo5.nix

new file mode 100644

index 0000000000000000000000000000000000000000..ddee7ce2c4a9aa633e2de28231a2ead44a7c8320

--- /dev/null

+++ b/pkgs/gnss/rtklib/demo5.nix

@@ -0,0 +1,18 @@

+{ fetchFromGitHub, rtklib }:

+rtklib.overrideAttrs (super: rec {

• pname = "rtklib-demo5";

• version = "b34i";

• src = fetchFromGitHub {

• owner = "rtklibexplorer";

• repo = "RTKLIB";

• rev = version;

• hash = "sha256-QVbmEGPSr/CZN9ljwO1oUQVs6ea5BNBXbK+WLHcxgUM=";

• };

• meta = rtklib.meta // {

• description = "A version of RTKLIB optimized for single and dual frequency low cost GPS receivers";

• homepage = "http://rtkexplorer.com/";

• };

+})