Fix error linked to Qiskit minimum version required

Author: Takishima

projectq/libs/qasm/_parse_qasm_qiskit.py

@@ -55,9 +55,9 @@ def apply_op(eng, gate, qubits, bits, bits_map):
                 # TODO: This will silently discard opaque gates...
                 return
 
-            gate_args = {gate._definition.qregs[0].name: qubits}
+            gate_args = {gate.definition.qregs[0].name: qubits}
 
-            for gate_sub, quregs_sub, bits_sub in gate._definition.data:
+            for gate_sub, quregs_sub, bits_sub in gate.definition.data:
                 # OpenQASM 2.0 limitation...
                 assert gate.name != 'measure' and not bits_sub
                 apply_op(

setup.cfg

@@ -43,8 +43,8 @@ install_requires =
 braket = boto3
 
 # OpenQASM support
-qiskit = qiskit-terra >= 0.11
-qasm = qiskit-terra >= 0.11
+qiskit = qiskit-terra >= 0.15
+qasm = qiskit-terra >= 0.15
 pyparsing = pyparsing
 
 # ==============================================================================