bonnmotion: point 404ing src at live url, modernize (#472870)

pkgs/by-name/bo/bonnmotion/package.nix

@@ -7,12 +7,13 @@
   jre,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "bonnmotion";
   version = "3.0.1";
 
+  # also available at https://github.com/sys-uos/bonnmotion
   src = fetchzip {
-    url = "https://sys.cs.uos.de/bonnmotion/src/bonnmotion-${version}.zip";
+    url = "https://bonnmotion.sys.cs.uos.de/src/bonnmotion-${finalAttrs.version}.zip";
     sha256 = "16bjgr0hy6an892m5r3x9yq6rqrl11n91f9rambq5ik1cxjqarxw";
   };
 
@@ -50,7 +51,7 @@ stdenv.mkDerivation rec {
       for several network simulators, such as ns-2, ns-3, GloMoSim/QualNet,
       COOJA, MiXiM, and ONE.
     '';
-    homepage = "https://sys.cs.uos.de/bonnmotion/";
+    homepage = "https://bonnmotion.sys.cs.uos.de";
     sourceProvenance = with lib.sourceTypes; [
       fromSource
       binaryBytecode # source bundles dependency jars
@@ -58,4 +59,4 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl2Plus;
     maintainers = with lib.maintainers; [ oxzi ];
   };
-}
+})