Remove local install python in favour of hdev and fix tests

.cookiecutter.json

@@ -8,7 +8,8 @@
             "README.md",
             "setup.cfg",
             "pytest.ini",
-            "src/pyramid_sanity/__init__.py"
+            "src/pyramid_sanity/__init__.py",
+            "tests/conftest.py"
         ]
     },
     "_template": "gh:hypothesis/h-cookiecutter-pypackage"

Makefile

@@ -53,4 +53,5 @@ coverage: python
 
 .PHONY: python
 python:
-	@./bin/install-python.sh
+	@# Ensure we can run even if the local pyenv versions are not installed
+	@PYENV_VERSION=system hdev install-python;

pyproject.toml

@@ -0,0 +1,5 @@
+[tool.hdev.tox]
+# Any pip dependencies to be run before every test run (is prepended with
+# "pip install") or false if no extras are required.
+# e.g. flask=1.2.3 --no-deps
+test_extras = false

tox.ini

@@ -18,7 +18,7 @@ passenv =
     EXTRA_DEPS
     dist: BUILD
 deps =
-    {tests,lint}: .[tests]
+    {tests,lint}: -e .[tests]
     lint: pylint
     lint: pydocstyle
     {checkformatting,format}: black
@@ -29,11 +29,13 @@ deps =
     {dist,initialrelease}: wheel
     {env:EXTRA_DEPS:}
 whitelist_externals =
+    hdev
     release: {toxinidir}/bin/check_that_git_working_tree_is_clean.sh
     {dist,initialrelease}: rm
     {release,initialrelease}: sh
     {release,initialrelease}: git
 commands =
+    tests: hdev config --if tool.hdev.tox.test_extras --run --template "pip install --quiet --use-feature=in-tree-build \{0\}"
     tests: coverage run -m pytest tests
 
     lint: pydocstyle --explain src