diff -ru dnf-4.0.4.orig/dnf/base.py dnf-4.0.4/dnf/base.py
--- dnf-4.0.4.orig/dnf/base.py	2019-06-02 15:26:56.912792437 +0200
+++ dnf-4.0.4/dnf/base.py	2019-06-02 15:27:29.783939255 +0200
@@ -1676,7 +1676,7 @@
         myts = dnf.rpm.transaction.initReadOnlyTransaction(root=installroot)
         myts.pushVSFlags(~(rpm.RPMVSF_NODSAHEADER))
         idx = myts.dbMatch('name', 'gpg-pubkey')
-        keys = len(idx)
+        keys = idx.count()
         del idx
         del myts
 
Only in dnf-4.0.4/dnf: base.py.orig
diff -ru dnf-4.0.4.orig/dnf/const.py.in dnf-4.0.4/dnf/const.py.in
--- dnf-4.0.4.orig/dnf/const.py.in	2019-06-02 15:21:54.000000000 +0200
+++ dnf-4.0.4/dnf/const.py.in	2019-06-02 15:27:59.991074300 +0200
@@ -25,7 +25,7 @@
 CONF_AUTOMATIC_FILENAME='/etc/dnf/automatic.conf'
 DISTROVERPKG=('system-release(releasever)', 'system-release',
               'distribution-release(releasever)', 'distribution-release',
-              'redhat-release', 'suse-release')
+              'openmamba-release', 'redhat-release', 'suse-release')
 GROUP_PACKAGE_TYPES = ('mandatory', 'default', 'conditional') # :api
 INSTALLONLYPKGS=['kernel', 'kernel-PAE',
                  'installonlypkg(kernel)',
Only in dnf-4.0.4/dnf: const.py.in.orig
Only in dnf-4.0.4/dnf: const.py.in.rej
diff -ru dnf-4.0.4.orig/dnf/rpm/__init__.py dnf-4.0.4/dnf/rpm/__init__.py
--- dnf-4.0.4.orig/dnf/rpm/__init__.py	2019-06-02 15:26:56.912792437 +0200
+++ dnf-4.0.4/dnf/rpm/__init__.py	2019-06-02 15:27:29.783939255 +0200
@@ -39,10 +39,10 @@
             idx = ts.dbMatch('provides', distroverpkg)
         except (TypeError, rpm.error) as e:
             raise dnf.exceptions.Error('Error: %s' % str(e))
-        if not len(idx):
+        if idx.count() == 0:
             continue
         try:
-            hdr = next(idx)
+            hdr = idx.next()
         except StopIteration:
             msg = 'Error: rpmdb failed to list provides. Try: rpm --rebuilddb'
             raise dnf.exceptions.Error(msg)
Only in dnf-4.0.4/dnf/rpm: __init__.py.orig