Remove QIR

.github/workflows/test.yml

@@ -10,46 +10,40 @@ jobs:
     name: ${{ matrix.os }}, python${{ matrix.python-version }}, ${{ matrix.case-name }}
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false # Continue running jobs even if a previous job fails
       matrix:
         include:
           - case-name: qutip@5.0.0
             os: ubuntu-latest
             qutip-version: '==5.0.0'
-            pyqir-version: ''
             python-version: '3.11'
           - case-name: qutip@qutip-4.7.X
             os: ubuntu-latest
             qutip-version: '@qutip-4.7.X'
-            pyqir-version: ''
             python-version: '3.10'
           - case-name: qutip@master
             os: ubuntu-latest
             qutip-version: '@master'
-            pyqir-version: ''
             python-version: '3.12'
           - case-name: qutip@4.7
             os: macOS-latest
             qutip-version: '==4.7.*'
             qiskit-version: ''
-            pyqir-version: ''
             python-version: '3.11'
-          - case-name: qiskit+qir
+          - case-name: qiskit
             os: windows-latest
             qutip-version: ''
             qiskit-version: '==0.46.*'
-            pyqir-version: '==0.6.2'
             python-version: '3.9'
-          - case-name: qiskit+qir
+          - case-name: qiskit
             os: macOS-latest
             qutip-version: ''
             qiskit-version: '==0.46.*'
-            pyqir-version: '==0.6.2'
             python-version: '3.9'
-          - case-name: qiskit+qir
+          - case-name: qiskit
             os: ubuntu-latest
             qutip-version: ''
             qiskit-version: '==0.46.*'
-            pyqir-version: '==0.6.2'
             python-version: '3.9'
 
     steps:
@@ -72,11 +66,6 @@ jobs:
       if: ${{ matrix.qiskit-version != '' }}
       run: python -m pip install 'qiskit${{ matrix.qiskit-version }}' 'qiskit-aer==0.14.0.1'
 
-    - name: Install PyQIR from PyPI
-      if: ${{ matrix.pyqir-version != '' }}
-      # We use each subpackage explicitly here; see https://github.com/qir-alliance/pyqir/issues/167.
-      run: python -m pip install 'pyqir-generator${{ matrix.pyqir-version }}' 'pyqir-parser${{ matrix.pyqir-version }}'
-
     - name: Install qutip-qip
       # Installing in-place so that coveralls can locate the source code.
       run: |

doc/requirements.txt

@@ -9,7 +9,5 @@ numpydoc==1.4.0
 matplotlib==3.5.2
 docutils==0.17.1
 sphinxcontrib-bibtex==2.4.2
-pyqir-generator==0.6.2
-pyqir-parser==0.6.2
 qiskit==0.46.1
 qiskit-aer==0.14.0.1

doc/source/apidoc.rst

@@ -19,7 +19,6 @@ Simulation based on operator-state multiplication.
    qutip_qip.qubits
    qutip_qip.decompose
    qutip_qip.qasm
-   qutip_qip.qir
    qutip_qip.vqa
 
 Pulse-level simulation

doc/source/qip-simulator.rst

@@ -280,7 +280,7 @@ We are left with a mixed state.
 Import and export quantum circuits
 ==================================
 
-QuTiP supports importing and exporting quantum circuits in the `OpenQASM 2.0 <https://github.com/Qiskit/openqasm/tree/OpenQASM2.x>`_ format, as well as exporting circuits to `Quantum Intermediate Representation <https://www.qir-alliance.org/>`_.
+QuTiP supports importing and exporting quantum circuits in the `OpenQASM 2.0 <https://github.com/Qiskit/openqasm/tree/OpenQASM2.x>`_ format.
 To import from and export to OpenQASM 2.0, you can use the :func:`.read_qasm` and :func:`.save_qasm` functions, respectively.
 We demonstrate this functionality by loading a circuit for preparing the :math:`\left|W\right\rangle`-state from an OpenQASM 2.0 file.
 The following code is in OpenQASM format:
@@ -326,24 +326,3 @@ One can save it in a ``.qasm`` file and import it using the following code:
 
   from qutip_qip.qasm import read_qasm
   qc = read_qasm("source/w-state.qasm")
-
-QuTiP circuits can also be exported to QIR:
-
-.. doctest::
-
-  >>> from qutip_qip.circuit import QubitCircuit
-  >>> from qutip_qip.qir import circuit_to_qir
-
-  >>> circuit = QubitCircuit(3, num_cbits=2)
-  >>> msg, here, there = range(3)
-  >>> circuit.add_gate("RZ", targets=[msg], arg_value=0.123)
-  >>> circuit.add_gate("SNOT", targets=[here])
-  >>> circuit.add_gate("CNOT", targets=[there], controls=[here])
-  >>> circuit.add_gate("CNOT", targets=[here], controls=[msg])
-  >>> circuit.add_gate("SNOT", targets=[msg])
-  >>> circuit.add_measurement("Z", targets=[msg], classical_store=0)
-  >>> circuit.add_measurement("Z", targets=[here], classical_store=1)
-  >>> circuit.add_gate("X", targets=[there], classical_controls=[0])
-  >>> circuit.add_gate("Z", targets=[there], classical_controls=[1])
-
-  >>> print(circuit_to_qir(circuit, "text"))  # doctest: +SKIP