--- CMakeLists.txt	2020-11-02 13:58:06.119743710 -0600
+++ kstars-3.4.3/CMakeLists.txt	2020-11-02 14:05:01.707799274 -0600
@@ -4,5 +4,7 @@
 set (KStars_VERSION_REVISION 3)
 set (CMAKE_CXX_STANDARD 11)
 
+add_definitions(-DINDI_NIX_ROOT=${INDI_NIX_ROOT})
+
 # Build KStars Lite with -DBUILD_KSTARS_LITE=ON
 option(BUILD_KSTARS_LITE "Build KStars Lite" OFF)

--- ksutils.cpp	2020-11-02 13:47:44.883596916 -0600
+++ kstars-3.4.3/kstars/auxiliary/ksutils.cpp	2020-11-02 17:41:44.961937090 -0600
@@ -1076,6 +1076,9 @@
 {
     QString snap = QProcessEnvironment::systemEnvironment().value("SNAP");
     QString flat = QProcessEnvironment::systemEnvironment().value("FLATPAK_DEST");
+#define STR_EXPAND(x) #x
+#define STR(x) STR_EXPAND(x)
+    QString nix = QString(STR(INDI_NIX_ROOT));
 
     if (option == "fitsDir")
     {
@@ -1089,7 +1091,7 @@
         if (flat.isEmpty() == false)
             return flat + "/bin/indiserver";
         else
-            return snap + "/usr/bin/indiserver";
+            return nix + "/bin/indiserver";
     }
     else if (option == "INDIHubAgent")
     {
@@ -1099,7 +1101,7 @@
         if (flat.isEmpty() == false)
             return flat + "/bin/indihub-agent";
         else
-            return snap + "/usr/bin/indihub-agent";
+            return nix + "/bin/indihub-agent";
     }
     else if (option == "indiDriversDir")
     {
@@ -1109,7 +1111,7 @@
         if (flat.isEmpty() == false)
             return flat + "/share/indi";
         else
-            return snap + "/usr/share/indi";
+            return nix + "/share/indi";
 #else
         return QStandardPaths::locate(QStandardPaths::GenericDataLocation, "indi", QStandardPaths::LocateDirectory);
 #endif