A patch to mbs

libsolv.patch

diff --git a/module_build_service/mmd_resolver.py b/module_build_service/mmd_resolver.py
index dfb88bb..81d92ed 100644
--- a/module_build_service/mmd_resolver.py
+++ b/module_build_service/mmd_resolver.py
@@ -173,6 +173,17 @@ class MMDResolver(object):
                                   pool.Dep("module(%s:%s)" % (n, s)).Rel(
                                       solv.REL_EQ, pool.Dep(str(v))))
 
+            # Add "Provides: stream(name) = stream" and "Conflicts: stream(name) != stream",
+            # so that we make every stream of the a module conflict with every other stream of that
+            # module.  This disallows parallel installation of streams.
+            # solv.REL_LT | solv.REL_GT should be interpreted as "!="
+            solvable.add_deparray(solv.SOLVABLE_PROVIDES,
+                                  pool.Dep("stream(%s)" % n).Rel(
+                                      solv.REL_EQ, pool.Dep(s)))
+            solvable.add_deparray(solv.SOLVABLE_CONFLICTS,
+                                  pool.Dep("stream(%s)" % n).Rel(
+                                      solv.REL_LT | solv.REL_GT, pool.Dep(s)))
+
             # Fill in the "Requires" of this module, so we can track its dependencies
             # on other modules.
             requires = self._deps2reqs(normdeps(mmd, "get_requires"))