Revert the pyproject.toml changes, replace CI pydantic check with an …

…inplace sed to pin pydantic version to 1.0 (assuming the spec remains >=1.y.z for now)

.github/workflows/CI.yaml

@@ -23,12 +23,16 @@ jobs:
         uses: actions/checkout@v3
       - name: Install poetry
         run: pip install poetry
-      - name: Install repo with Pydantic v2
-        run: poetry install --no-interaction --no-ansi
-        if: ${{ matrix.pydantic-version == 2 }}
+      # Force pydantic 1.0 by modifying poetry dep "pydantic" string with in-place sed
+      # -i '' is zero-length extension which does effectively in-place sub.
+      # ^ start of line, pydantic, optional spaces and > sign, capture the version, replace with ^{version}
+      # Should avoid also replacing the autodoc-pydantic spec later on.
       - name: Install repo with Pydantic v1
-        run: poetry install --no-interaction --no-ansi --without pydantic --with pydanticv1
+        run: |
+          sed -i '' 's/^pydantic *= *">*= *\([0-9.]*\)"/pydantic = "^\1"/' pyproject.toml
         if: ${{ matrix.pydantic-version == 1 }}
+      - name: Install repo with poetry
+        run: poetry install --no-interaction --no-ansi
       - name: Run tests
         run: poetry run pytest -rws -v --cov=qcelemental --color=yes --cov-report=xml
       - name: Upload coverage to Codecov

pyproject.toml

@@ -31,23 +31,13 @@ numpy = [
 ]
 python = "^3.7"
 pint = ">=0.10.0"
+pydantic = ">=1.8.2"
 nglview = { extras = ["viz"], version = "^3.0.3" }
 ipykernel = { version = "<6.0.0", extras = ["viz"] }
 importlib-metadata = { version = ">=4.8", python = "<3.8" }
 networkx = { version = "<3.0", extras = ["align"] }
 pytest = { extras = ["test"], version = "^7.2.2" }
 
-[tool.poetry.group.pydantic.dependencies]
-pydantic = "^2.0"
-
-[tool.poetry.group.pydanticv1]
-optional = true
-
-[tool.poetry.group.pydanticv1.dependencies]
-pydantic = "^1.8.2"
-
-
-
 
 [tool.poetry.group.dev.dependencies]
 black = ">=23.1.0"