Patch taken from the upstream repository
https://github.com/frescobaldi/python-poppler-qt5/issues/43

From 92e5962ec3751ab051d0b655fd61afc7a1cf709e Mon Sep 17 00:00:00 2001
From: Ben Greiner <code@bnavigator.de>
Date: Thu, 4 Mar 2021 17:02:51 +0100
Subject: [PATCH] map type QVector< QPair<TYPE, TYPE> > for
 FormFieldChoice::choicesWithExportValues() (#45)

---
 types.sip | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)

diff --git a/types.sip b/types.sip
index 239b8c9..81cb283 100644
--- a/types.sip
+++ b/types.sip
@@ -331,5 +331,98 @@ template <TYPE>
 };
 
 
+/**
+ * Convert QVector< QPair<TYPE, TYPE> >
+ * from and to a Python list of a 2-item tuple
+ */
+
+template<TYPE>
+%MappedType QVector< QPair<TYPE, TYPE> >
+{
+%TypeHeaderCode
+#include <qvector.h>
+#include <qpair.h>
+%End
+
+%ConvertFromTypeCode
+  // Create the list.
+  PyObject *l;
+
+  if ((l = PyList_New(sipCpp->size())) == NULL)
+      return NULL;
+
+  // Set the li</td></tr></table>
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<input type='hidden' name='id' value='51f0c0af2de75292985b943cb808f176dd618585'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
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