Add spin lint

.github/workflows/pythonpackage.yml

@@ -29,10 +29,8 @@ jobs:
     - name: Lint
       run: |
         set -euo pipefail
-        # Tell us what version we are using
         ruff version
-        # Check the source file, ignore type annotations (ANN) for now.
-        ruff check numpy_financial/ benchmarks/ --ignore F403 --select E,F,B,I
+        ruff check numpy_financial/ benchmarks/
     - name: Build project
       run: |
         spin build -v

.spin/cmds.py

@@ -0,0 +1,19 @@
+import click
+import spin
+
+@click.command()
+@click.option(
+    '--fix',
+    is_flag=True,
+    default=False,
+    required=False,
+)
+def lint(fix):
+    """🔦 Run lint and typing checks
+
+    """
+    ruff_flags = ["--fix"] if fix else []
+    spin.util.run(["ruff", "check", "numpy_financial/", "benchmarks/"] + ruff_flags)
+
+    spin.util.run(["pyright"])
+    spin.util.run(["mypy", "--no-incremental", "."])

pyproject.toml

@@ -54,6 +54,8 @@ doc = [
 dev = [
     "ruff>=0.11.5",
     "asv>=0.6.0",
+    "mypy",
+    "pyright"
 ]
 
 
@@ -82,6 +84,8 @@ exclude = [
 ]
 stubPath = "."
 typeCheckingMode = "standard"
+# _cfinancial is a Cython extension, so we only have a .pyi stub
+reportMissingModuleSource = "none"
 
 
 [tool.spin]
@@ -103,3 +107,11 @@ package = 'numpy_financial'
   "spin.cmds.meson.python",
   "spin.cmds.meson.run"
 ]
+"Lint" = [
+  ".spin/cmds.py:lint"
+]
+
+
+[tool.ruff.lint]
+ignore = ["F403"]
+select = ["E", "F", "B", "I"]