Port the lwt tests to uv and GitHub

Author: jeromekelleher

.github/workflows/tests.yml

@@ -141,19 +141,15 @@ jobs:
           verbose: true
           flags: python-tests-no-jit
 
-      # - name: Build example LWT interface code and test
-      #   run: |
-      #     # We're assuming that the tskit C module has already
-      #     # been built, as we're testing against the local tskit version.
-      #     cd python/lwt_interface
-      #     make allchecks
-      #     uv run python -m pytest -n2
-
-      # - run:
-      #     name: Build cython example LWT interface code and run
-      #     command: |
-      #       cd python/lwt_interface/cython_example
-      #       make
+      - name: Build example LWT interface code and test
+        working-directory: python/lwt_interface/
+        run: |
+          make allchecks
+          uv run --project=../ --group=test pytest -vs
+
+      - name: Build cython example LWT interface code and run
+        working-directory: python/lwt_interface/cython_example
+        run: make
 
 
   bespoke-c-test:

python/lwt_interface/Makefile

@@ -3,10 +3,10 @@ all: cmodule
 
 allchecks: example_c_module.c
 	CFLAGS="-std=c99 --coverage -Wall -Wextra -Werror -Wno-unused-parameter -Wno-cast-function-type" \
-	python3 setup.py build_ext --inplace
+	uv run --project=../ python setup.py build_ext --inplace
 
 cmodule: example_c_module.c
-	python3 setup.py build_ext --inplace
+	uv run --project=../ python setup.py build_ext --inplace
 
 clean:
 	rm -f *.so *.o tags

python/lwt_interface/cython_example/Makefile

@@ -1,10 +1,10 @@
 all: compile run
 
 compile:
-	pip install -e . --use-pep517
+	uv run --project=../../ --group=test-lwt setup.py build_ext --inplace
 
 run:
-	PYTHONPATH=../.. python -c "import example; example.main()"
+	uv run --project=../../ --group=test-lwt python -c "import example; example.main()"
 
 clean:
 	rm -rf build/

python/pyproject.toml

@@ -82,6 +82,12 @@ test = [
     "zarr",
 ]
 
+test-lwt = [
+    "cython",
+    "pytest",
+    "pytest-cov",
+]
+
 docs = [
     "jupyter-book<2",
     "breathe",
@@ -94,7 +100,6 @@ docs = [
     "pandas",
 ]
 
-
 wheels = [
   "cibuildwheel",
 ]