Blame zbar-installation-instructions.patch

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diff --git a/lib/qrscanner.py b/lib/qrscanner.py
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index f659d5e4..5f0eee79 100644
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--- a/lib/qrscanner.py
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+++ b/lib/qrscanner.py
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@@ -45 +45 @@ def scan_barcode(device='', timeout=-1, display=True, threaded=False):
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-        raise RuntimeError("Cannot start QR scanner; zbar not available.")
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+        raise RuntimeError("Cannot start QR scanner; zbar not available. Try 'sudo dnf install zbar-pygtk'")