diff -r 76a025db4948 -r b2b7af293c46 src/libraries.h
--- a/src/libraries.h	Sun Jun 26 21:32:51 2022 +0300
+++ b/src/libraries.h	Mon Jun 27 01:09:18 2022 +0300
@@ -44,13 +44,7 @@
 Q_DECLARE_METATYPE(Library::Role)
 QDataStream &operator<<(QDataStream&, const Library&);
 QDataStream &operator>>(QDataStream&, Library&);
-
-using Libraries = QList<Library>;
-//QDataStream &operator<<(QDataStream&, const Libraries&);
-//QDataStream &operator>>(QDataStream&, Libraries&);
-//Q_DECLARE_METATYPE(Libraries)
-
-class Configuration;
+using Libraries = QVector<Library>;
 
 class LibrariesModel : public QAbstractTableModel
 {
@@ -61,14 +55,14 @@
 	auto end() const { return this->libraries.end(); }
 	QString findFile(QString fileName) const;
 	void addLibrary(const Library& library);
-	void removeLibrary(const std::size_t libraryIndex);
-	const Library& library(std::size_t libraryIndex) const;
-	void setLibraryPath(std::size_t libraryIndex, const QDir& path);
-	void setLibraryRole(std::size_t libraryIndex, const Library::Role role);
+	void removeLibrary(const qsizetype libraryIndex);
+	const Library& library(qsizetype libraryIndex) const;
+	void setLibraryPath(qsizetype libraryIndex, const QDir& path);
+	void setLibraryRole(qsizetype libraryIndex, const Library::Role role);
 	void restoreFromSettings();
 	void storeToSettings();
-	std::size_t count() const;
-	void moveLibrary(const std::size_t libraryFromIndex, const std::size_t libraryToIndex);
+	qsizetype count() const;
+	void moveLibrary(const qsizetype libraryFromIndex, const qsizetype libraryToIndex);
 	// Definitions for QAbstractTableModel
 	Qt::ItemFlags flags(const QModelIndex& index) const override;
 	QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
@@ -78,7 +72,7 @@
 		int role = Qt::DisplayRole) const override;
 	int rowCount(const QModelIndex&) const override;
 	int columnCount(const QModelIndex&) const override;
-	bool isValidIndex(const std::size_t libraryIndex) const;
+	bool isValidIndex(const qsizetype libraryIndex) const;
 	ColorTable loadColorTable(QTextStream& errors) const;
 private:
 	enum Column
@@ -86,6 +80,6 @@
 		RoleColumn,
 		PathColumn
 	};
-	void signalLibraryChange(std::size_t library);
+	void signalLibraryChange(const qsizetype library);
 	Libraries libraries;
 };