Remove qiskit-toqm tests and requirements-dev.txt entry (backport #9057)

qiskit/transpiler/preset_passmanagers/level0.py

@@ -96,7 +96,12 @@ def _choose_layout_condition(property_set):
     # TODO: Remove when qiskit-toqm has it's own plugin and we can rely on just the plugin interface
     if routing_method == "toqm" and "toqm" not in list_stage_plugins("routing"):
         HAS_TOQM.require_now("TOQM-based routing")
-        from qiskit_toqm import ToqmSwap, ToqmStrategyO0, latencies_from_target
+        # pylint: disable=import-error
+        from qiskit_toqm import (
+            ToqmSwap,
+            ToqmStrategyO0,
+            latencies_from_target,
+        )
 
         if initial_layout:
             raise TranspilerError("Initial layouts are not supported with TOQM-based routing.")

qiskit/transpiler/preset_passmanagers/level1.py

@@ -154,7 +154,12 @@ def _vf2_match_not_found(property_set):
     # TODO: Remove when qiskit-toqm has it's own plugin and we can rely on just the plugin interface
     if routing_method == "toqm" and "toqm" not in list_stage_plugins("routing"):
         HAS_TOQM.require_now("TOQM-based routing")
-        from qiskit_toqm import ToqmSwap, ToqmStrategyO1, latencies_from_target
+        # pylint: disable=import-error
+        from qiskit_toqm import (
+            ToqmSwap,
+            ToqmStrategyO1,
+            latencies_from_target,
+        )
 
         if initial_layout:
             raise TranspilerError("Initial layouts are not supported with TOQM-based routing.")

qiskit/transpiler/preset_passmanagers/level2.py

@@ -139,7 +139,12 @@ def _vf2_match_not_found(property_set):
     # TODO: Remove when qiskit-toqm has it's own plugin and we can rely on just the plugin interface
     if routing_method == "toqm" and "toqm" not in list_stage_plugins("routing"):
         HAS_TOQM.require_now("TOQM-based routing")
-        from qiskit_toqm import ToqmSwap, ToqmStrategyO2, latencies_from_target
+        # pylint: disable=import-error
+        from qiskit_toqm import (
+            ToqmSwap,
+            ToqmStrategyO2,
+            latencies_from_target,
+        )
 
         if initial_layout:
             raise TranspilerError("Initial layouts are not supported with TOQM-based routing.")

qiskit/transpiler/preset_passmanagers/level3.py

@@ -144,7 +144,12 @@ def _vf2_match_not_found(property_set):
     # TODO: Remove when qiskit-toqm has it's own plugin and we can rely on just the plugin interface
     if routing_method == "toqm" and "toqm" not in list_stage_plugins("routing"):
         HAS_TOQM.require_now("TOQM-based routing")
-        from qiskit_toqm import ToqmSwap, ToqmStrategyO3, latencies_from_target
+        # pylint: disable=import-error
+        from qiskit_toqm import (
+            ToqmSwap,
+            ToqmStrategyO3,
+            latencies_from_target,
+        )
 
         if initial_layout:
             raise TranspilerError("Initial layouts are not supported with TOQM-based routing.")

requirements-dev.txt

@@ -18,7 +18,6 @@ seaborn>=0.9.0
 reno>=3.4.0
 Sphinx>=3.0.0
 qiskit-sphinx-theme>=1.6
-qiskit-toqm>=0.0.4;platform_machine != 'aarch64' or platform_system != 'Linux'
 sphinx-autodoc-typehints~=1.18,!=1.19.3
 jupyter-sphinx
 sphinx-design>=0.2.0

test/python/transpiler/test_preset_passmanagers.py

@@ -39,15 +39,12 @@
     FakeTokyo,
     FakePoughkeepsie,
     FakeLagosV2,
-    FakeLima,
-    FakeWashington,
 )
 from qiskit.converters import circuit_to_dag
 from qiskit.circuit.library import GraphState
 from qiskit.quantum_info import random_unitary
 from qiskit.transpiler.preset_passmanagers import generate_preset_pass_manager
 from qiskit.transpiler.preset_passmanagers import level0, level1, level2, level3
-from qiskit.utils.optionals import HAS_TOQM
 from qiskit.transpiler.passes import Collect2qBlocks, GatesInBasis
 
 
@@ -267,51 +264,6 @@ def counting_callback_func(pass_, dag, time, property_set, count):
         self.assertEqual(gates_in_basis_true_count + 1, collect_2q_blocks_count)
 
 
-@ddt
-@unittest.skipUnless(HAS_TOQM, "qiskit-toqm needs to be installed")
-class TestToqmIntegration(QiskitTestCase):
-    """Test transpiler with TOQM-based routing"""
-
-    @combine(
-        level=[0, 1, 2, 3],
-        layout_method=[None, "trivial", "dense", "noise_adaptive", "sabre"],
-        backend_vbits_pair=[(FakeWashington(), 10), (FakeLima(), 5)],
-        dsc="TOQM-based routing with '{layout_method}' layout"
-        + "method on '{backend_vbits_pair[0]}' backend at level '{level}'",
-        name="TOQM_{layout_method}_{backend_vbits_pair[0]}_level{level}",
-    )
-    def test_basic_circuit(self, level, layout_method, backend_vbits_pair):
-        """
-        Basic circuits transpile across all opt levels and layout
-        methods when using TOQM-based routing.
-        """
-        backend, circuit_size = backend_vbits_pair
-        qr = QuantumRegister(circuit_size, "q")
-        qc = QuantumCircuit(qr)
-
-        # Generate a circuit that should need swaps.
-        for i in range(1, qr.size):
-            qc.cx(0, i)
-
-        result = transpile(
-            qc,
-            layout_method=layout_method,
-            routing_method="toqm",
-            backend=backend,
-            optimization_level=level,
-            seed_transpiler=4222022,
-        )
-
-        self.assertIsInstance(result, QuantumCircuit)
-
-    def test_initial_layout_is_rejected(self):
-        """Initial layout is rejected when using TOQM-based routing"""
-        with self.assertRaisesRegex(
-            TranspilerError, "Initial layouts are not supported with TOQM-based routing."
-        ):
-            transpile(QuantumCircuit(2), initial_layout=[1, 0], routing_method="toqm")
-
-
 @ddt
 class TestTranspileLevels(QiskitTestCase):
     """Test transpiler on fake backend"""