gnu: python-matplotlib: Fix import failure

* gnu/packages/python.scm (python-matplotlib)[propagated-inputs]: Add
  python-pyqt.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 0b582e6..0a7ca2e 100644 (file)
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -3213,6 +3213,7 @@ convert between colorspaces like sRGB, XYZ, CIEL*a*b*, CIECAM02, CAM02-UCS, etc.
        ;; object. For this reason we need to import both libraries.
        ;; https://pythonhosted.org/cairocffi/cffi_api.html#converting-pycairo
        ("python-pycairo" ,python-pycairo)
+       ("python-pyqt" ,python-pyqt)
        ("python-cairocffi" ,python-cairocffi)))
     (inputs
      `(("libpng" ,libpng)
@@ -3222,7 +3223,6 @@ convert between colorspaces like sRGB, XYZ, CIEL*a*b*, CIECAM02, CAM02-UCS, etc.
        ("glib" ,glib)
        ;; FIXME: Add backends when available.
        ;("python-wxpython" ,python-wxpython)
-       ("python-pyqt" ,python-pyqt)
        ("tcl" ,tcl)
        ("tk" ,tk)))
     (native-inputs