diff -rupN --no-dereference qbs-src-2.2.1/share/qbs/imports/qbs/Probes/qbs-pkg-config-probe.js qbs-src-2.2.1-new/share/qbs/imports/qbs/Probes/qbs-pkg-config-probe.js
--- qbs-src-2.2.1/share/qbs/imports/qbs/Probes/qbs-pkg-config-probe.js	2023-12-12 14:40:58.000000000 +0100
+++ qbs-src-2.2.1-new/share/qbs/imports/qbs/Probes/qbs-pkg-config-probe.js	2023-12-13 08:46:32.667872411 +0100
@@ -74,7 +74,13 @@ function configureQt(pkg) {
                 return;
             }
         }
-        var suffix = FileInfo.executableSuffix();
+        var qtsuffix = "";
+        if (packageName === "Qt5Core") {
+            qtsuffix = "-qt5;
+        } else if (packageName === "Qt6Core") {
+            qtsuffix = "-qt6;
+        }
+        var suffix = qtsuffix + FileInfo.executableSuffix();
         var qmakePaths = [FileInfo.joinPaths(binDir, "qmake" + suffix)];
         return QmakeProbeConfigure.configure(qmakePaths);
     }
diff -rupN --no-dereference qbs-src-2.2.1/share/qbs/imports/qbs/Probes/qmake-probe.js qbs-src-2.2.1-new/share/qbs/imports/qbs/Probes/qmake-probe.js
--- qbs-src-2.2.1/share/qbs/imports/qbs/Probes/qmake-probe.js	2023-12-12 14:40:58.000000000 +0100
+++ qbs-src-2.2.1-new/share/qbs/imports/qbs/Probes/qmake-probe.js	2023-12-13 08:46:32.671872392 +0100
@@ -56,16 +56,19 @@ function getQmakeFilePaths(qmakeFilePath
     var pathValue = Environment.getEnv("PATH");
     if (pathValue) {
         var dirs = splitNonEmpty(pathValue, FileInfo.pathListSeparator());
-        for (var i = 0; i < dirs.length; ++i) {
-            var candidate = FileInfo.joinPaths(dirs[i], "qmake" + FileInfo.executableSuffix());
-            var canonicalCandidate = FileInfo.canonicalPath(candidate);
-            if (!canonicalCandidate || !File.exists(canonicalCandidate))
-                continue;
-            if (FileInfo.completeBaseName(canonicalCandidate) !== "qtchooser")
-                candidate = canonicalCandidate;
-            if (!filePaths.contains(candidate)) {
-                console.info("Found Qt at '" + FileInfo.toNativeSeparators(candidate) + "'.");
-                filePaths.push(candidate);
+        var qtvers = ["-qt6", "-qt5", ""];
+        for (var j = 0; j < qtvers.length; ++j) {
+            for (var i = 0; i < dirs.length; ++i) {
+                var candidate = FileInfo.joinPaths(dirs[i], "qmake" + qtvers[j] + FileInfo.executableSuffix());
+                var canonicalCandidate = FileInfo.canonicalPath(candidate);
+                if (!canonicalCandidate || !File.exists(canonicalCandidate))
+                    continue;
+                if (FileInfo.completeBaseName(canonicalCandidate) !== "qtchooser")
+                    candidate = canonicalCandidate;
+                if (!filePaths.contains(candidate)) {
+                    console.info("Found Qt at '" + FileInfo.toNativeSeparators(candidate) + "'.");
+                    filePaths.push(candidate);
+                }
             }
         }
     }