nixpkgs/pkgs/development/libraries/qt-5/5.9/qtdeclarative/import-paths.patch

Index: qtdeclarative-opensource-src-5.8.0/src/qml/qml/qqmlimport.cpp
===================================================================
--- qtdeclarative-opensource-src-5.8.0.orig/src/qml/qml/qqmlimport.cpp
+++ qtdeclarative-opensource-src-5.8.0/src/qml/qml/qqmlimport.cpp
@@ -1630,6 +1630,15 @@ QQmlImportDatabase::QQmlImportDatabase(Q
     QString installImportsPath =  QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath);
     addImportPath(installImportsPath);
 
+    // Add import paths derived from PATH
+    const QStringList paths = QFile::decodeName(qgetenv("PATH")).split(':');
+    const QString qmldir = QStringLiteral("../" NIXPKGS_QML2_IMPORT_PREFIX);
+    for (const QString &path: paths) {
+        if (!path.isEmpty()) {
+            addImportPath(QDir::cleanPath(path + QDir::separator() + qmldir));
+        }
+    }
+
     // env import paths
     if (Q_UNLIKELY(!qEnvironmentVariableIsEmpty("QML2_IMPORT_PATH"))) {
         const QByteArray envImportPath = qgetenv("QML2_IMPORT_PATH");