Merge pull request #53 from qiskit-community/tox4

Modify `tox.ini` to work with tox 4

.github/workflows/test_development_versions.yml

@@ -36,7 +36,7 @@ jobs:
           # Second, update requirements[-dev].txt in place to use the
           # development (git) versions of all Qiskit packages.
           sed -i 's|^\(qiskit[A-Za-z-]*\).*|git+https://github.com/Qiskit/\1.git|' requirements-dev.txt requirements.txt
-          pip install tox
+          pip install 'tox<4'
       - name: Modify tox.ini for more thorough check
         shell: bash
         run: |

.github/workflows/test_latest_versions.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install tox
+          pip install 'tox<4'
       - name: Modify tox.ini for more thorough check
         shell: bash
         run: |

tox.ini

@@ -2,13 +2,9 @@
 minversion = 2.4
 envlist = py36, py37, py38, py39, py310, lint, coverage, docs
 # CI: skip-next-line
-skipsdist = true
-# CI: skip-next-line
 skip_missing_interpreters = true
 
 [testenv]
-# CI: skip-next-line
-usedevelop = true
 install_command = pip install -U {opts} {packages}
 setenv =
   VIRTUAL_ENV={envdir}