add linting script for mypy

lint

@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+from pathlib import Path
+from pprint import pprint
+from itertools import chain
+from subprocess import check_call, run, PIPE
+import sys
+from typing import List, Optional, Iterable
+
+
+def log(*args):
+    print(*args, file=sys.stderr)
+
+
+DIR = Path(__file__).absolute().parent
+
+# hmm. I guess I need to check all subpackages separately
+# otherwise pylint doesn't work and mypy doesn't discover everything
+
+# TODO could reuse in readme??
+# returns None if not a package
+def package_name(p: Path) -> Optional[str]:
+    def mname(p: Path):
+        nosuf = p.with_suffix('')
+        return str(nosuf).replace('/', '.')
+
+    if p.suffix == '.py':
+        return mname(p)
+
+    if p.is_dir() and (p / '__init__.py').exists():
+        return mname(p)
+
+    return None
+
+
+def packages() -> Iterable[str]:
+    for p in sorted(p.relative_to(DIR) for p in (DIR / 'my').iterdir()):
+        res = package_name(p)
+        if res is not None:
+            yield res
+
+
+def pylint():
+    # TODO ugh. pylint still doesn't like checking my.config or my.books
+    # only top level .py files seem ok??
+    pass
+
+
+def mypy(package: str):
+    return run([
+        'mypy',
+        '--color-output', # TODO eh? doesn't work..
+        '--namespace-packages',
+        '-p', package,
+    ], stdout=PIPE, stderr=PIPE)
+
+
+def mypy_all() -> Iterable[Exception]:
+    from concurrent.futures import ThreadPoolExecutor
+    pkgs = list(packages())
+    log(f"Checking {pkgs}")
+    with ThreadPoolExecutor() as pool:
+        for p, res in zip(pkgs, pool.map(mypy, pkgs)):
+            ret = res.returncode
+            if ret > 0:
+                log(f'FAILED: {p}')
+            else:
+                log(f'OK: {p}')
+            print(res.stdout.decode('utf8'))
+            print(res.stderr.decode('utf8'), file=sys.stderr)
+            try:
+                res.check_returncode()
+            except Exception as e:
+                yield e
+
+
+def main():
+    errors = list(mypy_all())
+    if len(errors) > 0:
+        sys.exit(1)
+
+
+if __name__ == '__main__':
+    main()

mypy.ini

@@ -0,0 +1,10 @@
+[mypy]
+mypy_path=~/.config/my
+pretty = True
+show_error_context = True
+show_error_codes = True
+check_untyped_defs = True
+
+# it's not controled by me, so for now just ignore..
+[mypy-my.config.repos.pdfannots.pdfannots]
+ignore_errors = True