address issue #322

src/eko/runner/legacy.py

@@ -77,9 +77,7 @@ def __init__(
             couplings=cs,
             interpol_dispatcher=bfd,
             n3lo_ad_variation=new_theory.n3lo_ad_variation,
-            matching_order=new_theory.matching_order
-            if new_theory.matching_order is not None
-            else new_theory.order,
+            matching_order=new_theory.matching_order,
         )
 
         with EKO.create(path) as builder:

src/eko/runner/parts.py

@@ -90,7 +90,7 @@ def evolve_configs(eko: EKO) -> dict:
         n3lo_ad_variation=tcard.n3lo_ad_variation,
         matching_order=tcard.matching_order
         if tcard.matching_order is not None
-        else tcard.order,
+        else (tcard.order[0] - 1, tcard.order[1] - 1),
     )
 
 

tests/eko/runner/test_parts.py

@@ -0,0 +1,22 @@
+from eko.runner import parts
+
+
+def test_evolve_configs(eko_factory):
+    # QCD@LO
+    e10 = eko_factory.get()
+    assert e10.theory_card.order == (1, 0)
+    p10 = parts.evolve_configs(e10)
+    assert p10["matching_order"] == (0, 0)
+    # QCD@N3LO + QED@N2LO w/o matching_order
+    eko_factory.theory.order = (4, 3)
+    eko_factory.theory.matching_order = None
+    e43 = eko_factory.get({})
+    assert e43.theory_card.order == (4, 3)
+    p43 = parts.evolve_configs(e43)
+    assert p43["matching_order"] == (3, 2)
+    # QCD@N3LO + QED@N2LO w/ matching_order
+    eko_factory.theory.matching_order = (3, 0)
+    e43b = eko_factory.get({})
+    assert e43b.theory_card.order == (4, 3)
+    p43b = parts.evolve_configs(e43b)
+    assert p43b["matching_order"] == (3, 0)