Don't test before 3.8; revert 'breaking' change to pyproject.toml

.github/workflows/tests.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-20.04   # See https://github.com/actions/setup-python/issues/544
     strategy:
       matrix:
-        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "pypy3"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "pypy3"]
 
     steps:
       - uses: actions/checkout@v2

pyproject.toml

@@ -31,14 +31,14 @@ pytest-benchmark = "*"
 # plum-dispatch = "*"
 # multipledispatch = "*"
 
-[tool.poetry.group.docs]
-optional = true
-
-[tool.poetry.group.docs.dependencies]
-recommonmark = "*"
-sphinx-gallery = "*"
-sphinx_markdown_tables = "*"
-sphinx_rtd_theme = ">=1.2"
+# -- Groups not supported by old versions of poetry, had problems with gh-actions
+# [tool.poetry.group.docs]
+# optional = true
+# [tool.poetry.group.docs.dependencies]
+# recommonmark = "*"
+# sphinx-gallery = "*"
+# sphinx_markdown_tables = "*"
+# sphinx_rtd_theme = ">=1.2"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]