--- kstars-3.5.0/CMakeLists.txt.old	2020-11-24 12:36:37.967433937 -0600
+++ kstars-3.5.0/CMakeLists.txt	2020-11-24 13:36:56.275263691 -0600
@@ -5,6 +5,9 @@
 set (KSTARS_BUILD_RELEASE "Stable")
 set (CMAKE_CXX_STANDARD 11)
 
+add_definitions(-DINDI_NIX_ROOT=${INDI_NIX_ROOT})
+add_definitions(-DXPLANET_NIX_ROOT=${XPLANET_NIX_ROOT})
+
 # Build KStars Lite with -DBUILD_KSTARS_LITE=ON
 option(BUILD_KSTARS_LITE "Build KStars Lite" OFF)
 
--- kstars-3.5.0/kstars/auxiliary/ksutils.old.cpp	2020-11-24 12:22:14.397319680 -0600
+++ kstars-3.5.0/kstars/auxiliary/ksutils.cpp	2020-11-24 13:32:22.946477798 -0600
@@ -1081,6 +1081,10 @@
     // We support running within Snaps, Flatpaks, and AppImage
     // The path should accomodate the differences between the different
     // packaging solutions
+    #define STR_EXPAND(x) #x
+    #define STR(x) STR_EXPAND(x)
+    QString indi_prefix = QString(STR(INDI_NIX_ROOT));
+    QString xplanet_prefix = QString(STR(XPLANET_NIX_ROOT));
     QString snap = QProcessEnvironment::systemEnvironment().value("SNAP");
     QString flat = QProcessEnvironment::systemEnvironment().value("FLATPAK_DEST");
     QString appimg = QProcessEnvironment::systemEnvironment().value("APPDIR");
@@ -1110,21 +1114,21 @@
 #if defined(Q_OS_OSX)
         return "/usr/local/bin/indiserver";
 #endif
-        return prefix + "/bin/indiserver";
+        return indi_prefix + "/bin/indiserver";
     }
     else if (option == "INDIHubAgent")
     {
 #if defined(Q_OS_OSX)
         return "/usr/local/bin/indihub-agent";
 #endif
-        return prefix + "/bin/indihub-agent";
+        return indi_prefix + "/bin/indihub-agent";
     }
     else if (option == "indiDriversDir")
     {
 #if defined(Q_OS_OSX)
         return "/usr/local/share/indi";
 #elif defined(Q_OS_LINUX)
-        return prefix + "/share/indi";
+        return indi_prefix + "/share/indi";
 #else
         return QStandardPaths::locate(QStandardPaths::GenericDataLocation, "indi", QStandardPaths::LocateDirectory);
 #endif
@@ -1181,7 +1185,7 @@
 #if defined(Q_OS_OSX)
         return "/usr/local/bin/xplanet";
 #endif
-        return prefix + "/bin/xplanet";
+        return xplanet_prefix + "/bin/xplanet";
     }
     else if (option == "ASTAP")
     {