Index: qtdeclarative-opensource-src-5.5.1/src/qml/qml/qqmlimport.cpp
===================================================================
--- qtdeclarative-opensource-src-5.5.1.orig/src/qml/qml/qqmlimport.cpp
+++ qtdeclarative-opensource-src-5.5.1/src/qml/qml/qqmlimport.cpp
@@ -1549,6 +1549,15 @@ QQmlImportDatabase::QQmlImportDatabase(Q
     QString installImportsPath =  QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath);
     addImportPath(installImportsPath);
 
+    // Add library paths derived from NIX_PROFILES.
+    const QByteArrayList profiles = qgetenv("NIX_PROFILES").split(' ');
+    const QString qmldir = QString::fromLatin1("/lib/qt5/qml");
+    Q_FOREACH (const QByteArray &profile, profiles) {
+        if (!profile.isEmpty()) {
+            addImportPath(QFile::decodeName(profile) + qmldir);
+        }
+    }
+
     // env import paths
     QByteArray envImportPath = qgetenv("QML2_IMPORT_PATH");
     if (!envImportPath.isEmpty()) {