matplotlib · timhoffm · Jul 31, 2018 · Dec 13, 2017 · Jul 30, 2018
diff --git a/INSTALL.rst b/INSTALL.rst
@@ -150,8 +150,9 @@ interface toolkits. See :ref:`what-is-a-backend` for more details on the
 optional Matplotlib backends and the capabilities they provide.
 
 * :term:`tk` (>= 8.3, != 8.6.0 or 8.6.1): for the Tk-based backends;
-* `PyQt4 <https://pypi.python.org/pypi/PyQt4>`_ (>= 4.4) or
-  `PySide <https://pypi.python.org/pypi/PySide>`_: for the Qt4-based backends;
+* `PyQt4 <https://pypi.python.org/pypi/PyQt4>`_ (>= 4.6) or
+  `PySide <https://pypi.python.org/pypi/PySide>`_ (>= 1.0.3): for the Qt4-based
+  backends;
 * `PyQt5 <https://pypi.python.org/pypi/PyQt5>`_: for the Qt5-based backends;
 * `PyGObject <https://pypi.org/project/PyGObject/>`_ or
   `pgi <https://pypi.org/project/pgi/>`_ (>= 0.0.11.2): for the GTK3-based

diff --git a/doc/api/backend_qt4agg_api.rst b/doc/api/backend_qt4agg_api.rst
@@ -2,7 +2,9 @@
 :mod:`matplotlib.backends.backend_qt4agg`
 =========================================
 
-.. automodule:: matplotlib.backends.backend_qt4agg
-   :members:
-   :undoc-members:
-   :show-inheritance:
+**NOTE** Not included, to avoid adding a dependency to building the docs.
+
+.. .. automodule:: matplotlib.backends.backend_qt4agg
+..    :members:
+..    :undoc-members:
+..    :show-inheritance:
diff --git a/doc/api/backend_qt4cairo_api.rst b/doc/api/backend_qt4cairo_api.rst
@@ -2,7 +2,9 @@
 :mod:`matplotlib.backends.backend_qt4cairo`
 ===========================================
 
-.. automodule:: matplotlib.backends.backend_qt4cairo
-   :members:
-   :undoc-members:
-   :show-inheritance:
+**NOTE** Not included, to avoid adding a dependency to building the docs.
+
+.. .. automodule:: matplotlib.backends.backend_qt4cairo
+..    :members:
+..    :undoc-members:
+..    :show-inheritance:
diff --git a/doc/api/backend_qt5agg_api.rst b/doc/api/backend_qt5agg_api.rst
@@ -2,7 +2,9 @@
 :mod:`matplotlib.backends.backend_qt5agg`
 =========================================
 
-.. automodule:: matplotlib.backends.backend_qt5agg
-   :members:
-   :undoc-members:
-   :show-inheritance:
+**NOTE** Not included, to avoid adding a dependency to building the docs.
+
+.. .. automodule:: matplotlib.backends.backend_qt5agg
+..    :members:
+..    :undoc-members:
+..    :show-inheritance:
diff --git a/doc/api/backend_qt5cairo_api.rst b/doc/api/backend_qt5cairo_api.rst
@@ -2,7 +2,9 @@
 :mod:`matplotlib.backends.backend_qt5cairo`
 ===========================================
 
-.. automodule:: matplotlib.backends.backend_qt5cairo
-   :members:
-   :undoc-members:
-   :show-inheritance:
+**NOTE** Not included, to avoid adding a dependency to building the docs.
+
+.. .. automodule:: matplotlib.backends.backend_qt5cairo
+..    :members:
+..    :undoc-members:
+..    :show-inheritance:
diff --git a/doc/sphinxext/mock_gui_toolkits.py b/doc/sphinxext/mock_gui_toolkits.py
@@ -6,108 +6,6 @@ class MyCairoCffi(MagicMock):
     __name__ = "cairocffi"
 
 
-class MyPyQt4(MagicMock):
-    class QtGui(object):
-        # PyQt4.QtGui public classes.
-        # Generated with
-        # textwrap.fill([name for name in dir(PyQt4.QtGui)
-        #                if isinstance(getattr(PyQt4.QtGui, name), type)])
-        _QtGui_public_classes = """\
-        Display QAbstractButton QAbstractGraphicsShapeItem
-        QAbstractItemDelegate QAbstractItemView QAbstractPrintDialog
-        QAbstractProxyModel QAbstractScrollArea QAbstractSlider
-        QAbstractSpinBox QAbstractTextDocumentLayout QAction QActionEvent
-        QActionGroup QApplication QBitmap QBoxLayout QBrush QButtonGroup
-        QCalendarWidget QCheckBox QClipboard QCloseEvent QColor QColorDialog
-        QColumnView QComboBox QCommandLinkButton QCommonStyle QCompleter
-        QConicalGradient QContextMenuEvent QCursor QDataWidgetMapper QDateEdit
-        QDateTimeEdit QDesktopServices QDesktopWidget QDial QDialog
-        QDialogButtonBox QDirModel QDockWidget QDoubleSpinBox QDoubleValidator
-        QDrag QDragEnterEvent QDragLeaveEvent QDragMoveEvent QDropEvent
-        QErrorMessage QFileDialog QFileIconProvider QFileOpenEvent
-        QFileSystemModel QFocusEvent QFocusFrame QFont QFontComboBox
-        QFontDatabase QFontDialog QFontInfo QFontMetrics QFontMetricsF
-        QFormLayout QFrame QGesture QGestureEvent QGestureRecognizer QGlyphRun
-        QGradient QGraphicsAnchor QGraphicsAnchorLayout QGraphicsBlurEffect
-        QGraphicsColorizeEffect QGraphicsDropShadowEffect QGraphicsEffect
-        QGraphicsEllipseItem QGraphicsGridLayout QGraphicsItem
-        QGraphicsItemAnimation QGraphicsItemGroup QGraphicsLayout
-        QGraphicsLayoutItem QGraphicsLineItem QGraphicsLinearLayout
-        QGraphicsObject QGraphicsOpacityEffect QGraphicsPathItem
-        QGraphicsPixmapItem QGraphicsPolygonItem QGraphicsProxyWidget
-        QGraphicsRectItem QGraphicsRotation QGraphicsScale QGraphicsScene
-        QGraphicsSceneContextMenuEvent QGraphicsSceneDragDropEvent
-        QGraphicsSceneEvent QGraphicsSceneHelpEvent QGraphicsSceneHoverEvent
-        QGraphicsSceneMouseEvent QGraphicsSceneMoveEvent
-        QGraphicsSceneResizeEvent QGraphicsSceneWheelEvent
-        QGraphicsSimpleTextItem QGraphicsTextItem QGraphicsTransform
-        QGraphicsView QGraphicsWidget QGridLayout QGroupBox QHBoxLayout
-        QHeaderView QHelpEvent QHideEvent QHoverEvent QIcon QIconDragEvent
-        QIconEngine QIconEngineV2 QIdentityProxyModel QImage QImageIOHandler
-        QImageReader QImageWriter QInputContext QInputContextFactory
-        QInputDialog QInputEvent QInputMethodEvent QIntValidator QItemDelegate
-        QItemEditorCreatorBase QItemEditorFactory QItemSelection
-        QItemSelectionModel QItemSelectionRange QKeyEvent QKeyEventTransition
-        QKeySequence QLCDNumber QLabel QLayout QLayoutItem QLineEdit
-        QLinearGradient QListView QListWidget QListWidgetItem QMainWindow
-        QMatrix QMatrix2x2 QMatrix2x3 QMatrix2x4 QMatrix3x2 QMatrix3x3
-        QMatrix3x4 QMatrix4x2 QMatrix4x3 QMatrix4x4 QMdiArea QMdiSubWindow
-        QMenu QMenuBar QMessageBox QMimeSource QMouseEvent
-        QMouseEventTransition QMoveEvent QMovie QPageSetupDialog QPaintDevice
-        QPaintEngine QPaintEngineState QPaintEvent QPainter QPainterPath
-        QPainterPathStroker QPalette QPanGesture QPen QPicture QPictureIO
-        QPinchGesture QPixmap QPixmapCache QPlainTextDocumentLayout
-        QPlainTextEdit QPolygon QPolygonF QPrintDialog QPrintEngine
-        QPrintPreviewDialog QPrintPreviewWidget QPrinter QPrinterInfo
-        QProgressBar QProgressDialog QProxyModel QPushButton QPyTextObject
-        QQuaternion QRadialGradient QRadioButton QRawFont QRegExpValidator
-        QRegion QResizeEvent QRubberBand QScrollArea QScrollBar
-        QSessionManager QShortcut QShortcutEvent QShowEvent QSizeGrip
-        QSizePolicy QSlider QSortFilterProxyModel QSound QSpacerItem QSpinBox
-        QSplashScreen QSplitter QSplitterHandle QStackedLayout QStackedWidget
-        QStandardItem QStandardItemModel QStaticText QStatusBar
-        QStatusTipEvent QStringListModel QStyle QStyleFactory QStyleHintReturn
-        QStyleHintReturnMask QStyleHintReturnVariant QStyleOption
-        QStyleOptionButton QStyleOptionComboBox QStyleOptionComplex
-        QStyleOptionDockWidget QStyleOptionDockWidgetV2 QStyleOptionFocusRect
-        QStyleOptionFrame QStyleOptionFrameV2 QStyleOptionFrameV3
-        QStyleOptionGraphicsItem QStyleOptionGroupBox QStyleOptionHeader
-        QStyleOptionMenuItem QStyleOptionProgressBar QStyleOptionProgressBarV2
-        QStyleOptionRubberBand QStyleOptionSizeGrip QStyleOptionSlider
-        QStyleOptionSpinBox QStyleOptionTab QStyleOptionTabBarBase
-        QStyleOptionTabBarBaseV2 QStyleOptionTabV2 QStyleOptionTabV3
-        QStyleOptionTabWidgetFrame QStyleOptionTabWidgetFrameV2
-        QStyleOptionTitleBar QStyleOptionToolBar QStyleOptionToolBox
-        QStyleOptionToolBoxV2 QStyleOptionToolButton QStyleOptionViewItem
-        QStyleOptionViewItemV2 QStyleOptionViewItemV3 QStyleOptionViewItemV4
-        QStylePainter QStyledItemDelegate QSwipeGesture QSyntaxHighlighter
-        QSystemTrayIcon QTabBar QTabWidget QTableView QTableWidget
-        QTableWidgetItem QTableWidgetSelectionRange QTabletEvent
-        QTapAndHoldGesture QTapGesture QTextBlock QTextBlockFormat
-        QTextBlockGroup QTextBlockUserData QTextBrowser QTextCharFormat
-        QTextCursor QTextDocument QTextDocumentFragment QTextDocumentWriter
-        QTextEdit QTextFormat QTextFragment QTextFrame QTextFrameFormat
-        QTextImageFormat QTextInlineObject QTextItem QTextLayout QTextLength
-        QTextLine QTextList QTextListFormat QTextObject QTextObjectInterface
-        QTextOption QTextTable QTextTableCell QTextTableCellFormat
-        QTextTableFormat QTimeEdit QToolBar QToolBox QToolButton QToolTip
-        QTouchEvent QTransform QTreeView QTreeWidget QTreeWidgetItem
-        QTreeWidgetItemIterator QUndoCommand QUndoGroup QUndoStack QUndoView
-        QVBoxLayout QValidator QVector2D QVector3D QVector4D QWhatsThis
-        QWhatsThisClickedEvent QWheelEvent QWidget QWidgetAction QWidgetItem
-        QWindowStateChangeEvent QWizard QWizardPage QWorkspace
-        QX11EmbedContainer QX11EmbedWidget QX11Info
-        """
-        for _name in _QtGui_public_classes.split():
-            locals()[_name] = type(_name, (), {})
-        del _name
-
-
-class MySip(MagicMock):
-    def getapi(*args):
-        return 1
-
-
 class MyWX(MagicMock):
     class Panel(object):
         pass
@@ -125,8 +23,6 @@ class StatusBar(object):
 def setup(app):
     sys.modules.update(
         cairocffi=MyCairoCffi(),
-        PyQt4=MyPyQt4(),
-        sip=MySip(),
         wx=MyWX(),
     )
     return {'parallel_read_safe': True, 'parallel_write_safe': True}