TST: move test dependencies to requirement files

.github/workflows/ci.yml

@@ -42,9 +42,15 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Build
-      run: python -m pip install ".[test]"
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install .
+        python -m pip install --requirement requirements/tests.txt
 
-    - run: python -m coverage run -m pytest --color=yes
+    - name: Test
+      run: |
+        python -m pip freeze
+        python -m coverage run -m pytest --color=yes
 
     - name: Upload coverage data
       uses: actions/upload-artifact@v3
@@ -107,8 +113,9 @@ jobs:
 
     - name: Build
       run: |
-        python3 -m pip install --upgrade pip
-        python3 -m pip install .[typecheck]
+        python -m pip install --upgrade pip
+        python -m pip install .
+        python -m pip install --requirement requirements/typecheck.txt
 
     - name: Run mypy
       run: mypy wxc

pyproject.toml

@@ -29,20 +29,6 @@ dependencies = [
 [project.license]
 text = "GPL-3.0"
 
-[project.optional-dependencies]
-test = [
-    "coverage[toml]>=6.5.0",
-    "matplotlib-inline",
-    "numpy",
-    "pytest>=6.0.2",
-    "pytest-mock>=3.5.1",
-    "schema>=0.7.2",
-]
-typecheck = [
-    "mypy==0.971",
-    "importlib-metadata;python_version < \"3.8\"",
-]
-
 [project.readme]
 file = "README.md"
 content-type = "text/markdown"

requirements/tests.txt

@@ -0,0 +1,6 @@
+coverage[toml]>=6.5.0
+matplotlib-inline
+numpy
+pytest>=6.0.2
+pytest-mock>=3.5.1
+schema>=0.7.2

requirements/typecheck.txt

@@ -0,0 +1 @@
+mypy==0.991