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diff --git a/src/lib/corelib/loader/moduleproviderloader.h b/src/lib/corelib/loader/moduleproviderloader.h
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+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Copyright (C) 2021 Ivan Komissarov (abbapoh@gmail.com)
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qbs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MODULEPROVIDERLOADER_H
+#define MODULEPROVIDERLOADER_H
+
+#include "loaderutils.h"
+
+#include <language/forward_decls.h>
+#include <language/moduleproviderinfo.h>
+
+#include <QtCore/qvariant.h>
+
+#include <optional>
+#include <utility>
+#include <vector>
+
+namespace qbs::Internal {
+class Item;
+class LoaderState;
+class ProductContext;
+
+class ModuleProviderLoader
+{
+public:
+    explicit ModuleProviderLoader(LoaderState &loaderState);
+
+    struct ModuleProviderResult {
+        bool providerFound = false;
+        std::optional<QStringList> searchPaths;
+    };
+    ModuleProviderResult executeModuleProviders(
+        ProductContext &productContext,
+        const CodeLocation &dependsItemLocation,
+        const QualifiedId &moduleName);
+
+private:
+    enum class ModuleProviderLookup { Scoped, Named };
+    struct Provider {
+        QualifiedId name;
+        ModuleProviderLookup lookup;
+    };
+    ModuleProviderResult executeModuleProvidersHelper(
+            ProductContext &product,
+            const CodeLocation &dependsItemLocation,
+            const QualifiedId &moduleName,
+            const std::vector<Provider> &providers);
+    std::pair<const ModuleProviderInfo &, bool>
+    findOrCreateProviderInfo(ProductContext &product, const CodeLocation &dependsItemLocation,
+                             const QualifiedId &moduleName, const QualifiedId &name,
+                             ModuleProviderLookup lookupType, const QVariantMap &qbsModule);
+    void setupModuleProviderConfig(ProductContext &product);
+
+    std::optional<std::vector<QualifiedId>> getModuleProviders(Item *item);
+
+    QString findModuleProviderFile(const QualifiedId &name, ModuleProviderLookup lookupType);
+    QVariantMap evaluateQbsModule(ProductContext &product) const;
+    Item *createProviderScope(const ProductContext &product, const QVariantMap &qbsModule);
+    using EvaluationResult = std::pair<QStringList, bool /*isEager*/>;
+    EvaluationResult evaluateModuleProvider(
+            ProductContext &product,
+            const CodeLocation &dependsItemLocation,
+            const QualifiedId &moduleName,
+            const QualifiedId &name,
+            const QString &providerFile,
+            const QVariantMap &moduleConfig,
+            const QVariantMap &qbsModule);
+    void checkAllowedValues(Item *providerItem);
+
+    LoaderState &m_loaderState;
+};
+
+} // namespace qbs::Internal
+
+#endif // MODULEPROVIDERLOADER_H