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diff --git a/lang/qt/src/qgpgmesetprimaryuseridjob.cpp b/lang/qt/src/qgpgmesetprimaryuseridjob.cpp
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+++ b/lang/qt/src/qgpgmesetprimaryuseridjob.cpp
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+/*
+    qgpgmesetprimaryuseridjob.cpp
+
+    This file is part of qgpgme, the Qt API binding for gpgme
+    Copyright (c) 2022 g10 Code GmbH
+    Software engineering by Ingo Klöcker <[email protected]>
+
+    QGpgME is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.
+
+    QGpgME is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of this program with any edition of
+    the Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), and distribute linked
+    combinations including the two.  You must obey the GNU General
+    Public License in all respects for all of the code used other than
+    Qt.  If you modify this file, you may extend this exception to
+    your version of the file, but you are not obligated to do so.  If
+    you do not wish to do so, delete this exception statement from
+    your version.
+*/
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include "qgpgmesetprimaryuseridjob.h"
+
+#include "util.h"
+
+#include <engineinfo.h>
+
+using namespace QGpgME;
+using namespace GpgME;
+
+static bool quickSetPrimayUidSupportsUidHash()
+{
+    return GpgME::engineInfo(GpgME::GpgEngine).engineVersion() >= "2.3.8";
+}
+
+static QGpgMESetPrimaryUserIDJob::result_type set_primary_userid(Context *ctx, const GpgME::UserID &userId)
+{
+    auto err = ctx->setPrimaryUid(userId.parent(), quickSetPrimayUidSupportsUidHash() ? userId.uidhash() : userId.id());
+    return std::make_tuple(err, QString(), Error());
+}
+
+QGpgMESetPrimaryUserIDJob::QGpgMESetPrimaryUserIDJob(Context *context)
+    : mixin_type{context}
+{
+    lateInitialization();
+}
+
+QGpgMESetPrimaryUserIDJob::~QGpgMESetPrimaryUserIDJob() = default;
+
+GpgME::Error QGpgMESetPrimaryUserIDJob::start(const GpgME::UserID &userId)
+{
+    if (userId.isNull()) {
+        return Error{make_error(GPG_ERR_INV_ARG)};
+    }
+    run([userId](Context *ctx) { return set_primary_userid(ctx, userId); });
+    return {};
+}
+
+#include "qgpgmesetprimaryuseridjob.moc"