Switch from qiskit-terra to qiskit (#1229)

* Switch from qiskit-terra to qiskit * Update CONTRIBUTING.md Co-authored-by: Steve Wood <[email protected]> --------- Co-authored-by: Max Rossmannek <[email protected]>
qiskit-community · Sep 4, 2023 · b4e07f7 · b4e07f7
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diff --git a/.github/actions/install-main-dependencies/action.yml b/.github/actions/install-main-dependencies/action.yml
@@ -22,39 +22,39 @@ inputs:
   use-conda:
     description: 'Use conda'
     required: true
-  terra-main:
-    description: 'Use Terra main'
+  qiskit-main:
+    description: 'Use Qiskit main'
     required: true
 runs:
   using: "composite"
   steps:
     - name: Get main last commit ids
       run: |
-        echo "TERRA_HASH=$(git ls-remote --heads https://github.com/Qiskit/qiskit-terra.git refs/heads/main  | awk '{print $1}')" >> $GITHUB_ENV
+        echo "QISKIT_HASH=$(git ls-remote --heads https://github.com/Qiskit/qiskit.git refs/heads/main  | awk '{print $1}')" >> $GITHUB_ENV
       shell: bash
-    - name: Terra Cache
+    - name: Qiskit Cache
       env:
         CACHE_VERSION: v1
-      id: terra-cache
+      id: qiskit-cache
       uses: actions/cache@v3
       with:
-        path: terra-cache
-        key: terra-cache-${{ inputs.os }}-${{ inputs.python-version }}-${{ env.TERRA_HASH }}-${{ env.CACHE_VERSION }}
-    - name: Install Terra from Main
+        path: qiskit-cache
+        key: qiskit-cache-${{ inputs.os }}-${{ inputs.python-version }}-${{ env.QISKIT_HASH }}-${{ env.CACHE_VERSION }}
+    - name: Install Qiskit from Main
       env:
         MACOSX_DEPLOYMENT_TARGET: 10.15
       run: |
-        if [ "${{ inputs.terra-main }}" == "true" ]; then
-          echo 'Install Terra from Main'
+        if [ "${{ inputs.qiskit-main }}" == "true" ]; then
+          echo 'Install Qiskit from Main'
           if [ "${{ inputs.use-conda }}" == "true" ]; then
             source "$CONDA/etc/profile.d/conda.sh"
             conda activate psi4env
           else
             pip install wheel
           fi
-          BASE_DIR=terra-cache
+          BASE_DIR=qiskit-cache
           build_from_main=true
-          cache_hit=${{ steps.terra-cache.outputs.cache-hit }}
+          cache_hit=${{ steps.qiskit-cache.outputs.cache-hit }}
           echo "cache hit: ${cache_hit}"
           if [ "$cache_hit" == "true" ]; then
             pip_result=0
@@ -70,23 +70,23 @@ runs:
           if [ "$build_from_main" == "true" ]; then
             echo 'Create wheel file from main'
             pip install -U setuptools_rust
-            git clone --depth 1 --branch main https://github.com/Qiskit/qiskit-terra.git /tmp/qiskit-terra
-            pushd /tmp/qiskit-terra
+            git clone --depth 1 --branch main https://github.com/Qiskit/qiskit.git /tmp/qiskit
+            pushd /tmp/qiskit
             python setup.py bdist_wheel
             popd
-            cp -rf /tmp/qiskit-terra/dist/*.whl "${BASE_DIR}"
+            cp -rf /tmp/qiskit/dist/*.whl "${BASE_DIR}"
             pushd "${BASE_DIR}"
             python -m pip install *.whl
             popd
             pip uninstall -y setuptools_rust
           fi
         else
-          echo 'Install Terra from Stable'
+          echo 'Install Qiskit from Stable'
           if [ "${{ inputs.use-conda }}" == "true" ]; then
             source "$CONDA/etc/profile.d/conda.sh"
             conda activate psi4env
           fi
-          pip install -U qiskit-terra
+          pip install -U qiskit
         fi
       shell: bash
     - name: Install stable Aer

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -66,7 +66,7 @@ jobs:
           os: ${{ matrix.os }}
           python-version: ${{ matrix.python-version }}
           use-conda: "true"
-          terra-main: "false"
+          qiskit-main: "false"
         if: ${{ !startsWith(github.ref, 'refs/heads/stable') && !startsWith(github.base_ref, 'stable/') }}
       - uses: ./.github/actions/install-nature
         with:

diff --git a/.github/workflows/neko.yml b/.github/workflows/neko.yml
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -98,26 +98,7 @@ please ensure that:
 
 ### Changelog generation
 
-The changelog is automatically generated as part of the release process
-automation. This works through a combination of the git log and the pull
-request. When a release is tagged and pushed to github the release automation
-bot looks at all commit messages from the git log for the release. It takes the
-PR numbers from the git log (assuming a squash merge) and checks if that PR had
-a `Changelog:` label on it. If there is a label it will add the git commit
-message summary line from the git log for the release to the changelog.
-
-If there are multiple `Changelog:` tags on a PR the git commit message summary
-line from the git log will be used for each changelog category tagged.
-
-The current categories for each label are as follows:
-
-| PR Label               | Changelog Category |
-| -----------------------|--------------------|
-| Changelog: Deprecation | Deprecated         |
-| Changelog: New Feature | Added              |
-| Changelog: API Change  | Changed            |
-| Changelog: Removal     | Removed            |
-| Changelog: Bugfix      | Fixed              |
+A changelog is manually generated as part of the release process from the release notes.
 
 ### Release Notes
 
@@ -201,8 +182,8 @@ deprecations:
 You can also look at other release notes for other examples.
 
 You can use any restructured text feature in them (code sections, tables,
-enumerated lists, bulleted list, etc) to express what is being changed as
-needed. In general you want the release notes to include as much detail as
+enumerated lists, bulleted list, etc.) to express what is being changed as
+needed. In general, you want the release notes to include as much detail as
 needed so that users will understand what has changed, why it changed, and how
 they'll have to update their code.
 
@@ -244,10 +225,8 @@ particular will be located at `docs/_build/html/release_notes.html`
 Please see the [Installing Qiskit Nature from
 Source](https://github.com/qiskit-community/qiskit-nature#installation)
 
-Note: Nature depends on Terra, and has optional dependence on Aer and IBM Q Provider, so
-these should be installed too. The main branch of Nature is kept working with those other element
-main branches so these should be installed from source too following the instructions at 
-the same location
+Note: Nature depends on Qiskit, and has an optional dependence on Aer so that
+should be installed too.
 
 Nature also has some other optional dependents see 
 [Nature optional installs](https://github.com/qiskit-community/qiskit-nature#optional-installs) for
@@ -265,12 +244,12 @@ The test suite can be run from a command line or via your IDE. You can run `make
 run all unit tests. Another way to run the test suite is to use
 [**tox**](https://tox.readthedocs.io/en/latest/#). For more information about using tox please
 refer to
-[Terra CONTRIBUTING](https://github.com/Qiskit/qiskit-terra/blob/main/CONTRIBUTING.md#test)
+[Qiskit CONTRIBUTING](https://github.com/Qiskit/qiskit/blob/main/CONTRIBUTING.md#test)
 Test section. However please note Nature does not have any
-[online tests](https://github.com/Qiskit/qiskit-terra/blob/main/CONTRIBUTING.md#online-tests)
+[online tests](https://github.com/Qiskit/qiskit/blob/main/CONTRIBUTING.md#online-tests)
 nor does it have
 [test skip
- options](https://github.com/Qiskit/qiskit-terra/blob/main/CONTRIBUTING.md#test-skip-options).    
+ options](https://github.com/Qiskit/qiskit/blob/main/CONTRIBUTING.md#test-skip-options).    
 
 ### Development Cycle
 
@@ -293,24 +272,9 @@ stable and the only changes merged to it are bugfixes.
 
 ### Release Cycle
 
-From time to time, we will release brand new versions of Qiskit Nature. These
+From time to time, we will release brand-new versions of Qiskit Nature. These
 are well-tested versions of the software.
 
-When the time for a new release has come, we will:
-
-1.  Create a new tag with the version number and push it to github
-2.  Change the `main` version to the next release version.
-
-The release automation processes will be triggered by the new tag and perform
-the following steps:
-
-1.  Create a stable branch for the new minor version from the release tag
-    on the `main` branch
-2.  Build and upload binary wheels to pypi
-3.  Create a github release page with a generated changelog
-4.  Generate a PR on the meta-repository to bump the terra version and
-    meta-package version.
-
 The `stable/*` branches should only receive changes in the form of bug
 fixes.
 

diff --git a/README.md b/README.md
@@ -15,8 +15,8 @@ The code comprises various modules revolving around:
 - second-quantized operator construction and manipulation
 - translating from the second-quantized to the qubit space
 - a quantum circuit library of natural science targeted ansatze
-- natural science specific algorithms and utilities to make the use of Qiskit
-  Terra's algorithms easier
+- natural science specific algorithms and utilities to make the use of
+  algorithms from [Qiskit Algorithms](https://qiskit.org/ecosystem/algorithms/) easier
 - and much more
 
 ## Installation

diff --git a/docs/index.rst b/docs/index.rst
@@ -19,8 +19,8 @@ The code comprises various modules revolving around:
 - second-quantized operator construction and manipulation
 - translating from the second-quantized to the qubit space
 - a quantum circuit library of natural science targeted ansatze
-- natural science specific algorithms and utilities to make the use of Qiskit
-  Terra's algorithms easier
+- natural science specific algorithms and utilities to make the use of
+  algorithms from `Qiskit Algorithms <https://qiskit.org/ecosystem/algorithms/>`_ easier
 - and much more
 
 

diff --git a/qiskit_nature/second_q/circuit/library/ansatzes/ucc.py b/qiskit_nature/second_q/circuit/library/ansatzes/ucc.py
@@ -574,7 +574,7 @@ def _build_fermionic_excitation_ops(self, excitations: Sequence) -> list[Fermion
             op = FermionicOp({" ".join(label): 1}, num_spin_orbitals=num_spin_orbitals)
             op_adj = op.adjoint()
             # we need to account for an additional imaginary phase in the exponent accumulated from
-            # the first-order trotterization routine implemented in Qiskit Terra
+            # the first-order trotterization routine implemented in Qiskit
             op_minus = 1j * (op - op_adj)
             operators.append(op_minus)
 

diff --git a/qiskit_nature/second_q/circuit/library/ansatzes/uvcc.py b/qiskit_nature/second_q/circuit/library/ansatzes/uvcc.py
@@ -389,7 +389,7 @@ def _build_vibration_excitation_ops(self, excitations: Sequence) -> list[Vibrati
             op = VibrationalOp({" ".join(label): 1}, self.num_modals)
             op -= op.adjoint()
             # we need to account for an additional imaginary phase in the exponent accumulated from
-            # the first-order trotterization routine implemented in Qiskit Terra
+            # the first-order trotterization routine implemented in Qiskit
             op *= 1j  # type: ignore
             operators.append(op)
 

diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,4 @@
-qiskit-terra>=0.24
+qiskit>=0.44
 scipy>=1.4
 numpy>=1.17
 psutil>=5

diff --git a/tox.ini b/tox.ini
@@ -11,7 +11,7 @@ setenv =
   LANGUAGE=en_US
   LC_ALL=en_US.utf-8
   ARGS="-V"
-deps = git+https://github.com/Qiskit/qiskit-terra.git
+deps = git+https://github.com/Qiskit/qiskit.git
        git+https://github.com/Qiskit/qiskit-aer.git
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/requirements-dev.txt