Implement proper editor integration for mypy

kittens/hints/main.py

@@ -290,11 +290,10 @@ def escape(chars):
 def functions_for(args):
     post_processors = []
     if args.type == 'url':
-        url_prefixes = args.url_prefixes
-        if url_prefixes == 'default':
+        if args.url_prefixes == 'default':
             url_prefixes = kitty_common_opts().get('url_prefixes', ('https', 'http', 'file', 'ftp'))
         else:
-            url_prefixes = url_prefixes.split(',')
+            url_prefixes = args.url_prefixes.split(',')
         from .url_regex import url_delimiters
         pattern = '(?:{})://[^{}]{{3,}}'.format(
             '|'.join(url_prefixes), url_delimiters
@@ -523,11 +522,11 @@ help_text = 'Select text from the screen using the keyboard. Defaults to searchi
 usage = ''
 
 
-def parse_hints_args(args):
+def parse_hints_args(args: List[str]) -> Tuple[HintsCLIOptions, List[str]]:
     return parse_args(args, OPTIONS, usage, help_text, 'kitty +kitten hints', result_class=HintsCLIOptions)
 
 
-def main(args):
+def main(args: List[str]):
     text = ''
     if sys.stdin.isatty():
         if '--help' not in args and '-h' not in args:
@@ -538,16 +537,16 @@ def main(args):
         text = sys.stdin.buffer.read().decode('utf-8')
         sys.stdin = open(os.ctermid())
     try:
-        args, items = parse_hints_args(args[1:])
+        opts, items = parse_hints_args(args[1:])
     except SystemExit as e:
         if e.code != 0:
             print(e.args[0], file=sys.stderr)
             input(_('Press Enter to quit'))
         return
-    if items and not (args.customize_processing or args.type == 'linenum'):
+    if items and not (opts.customize_processing or opts.type == 'linenum'):
         print('Extra command line arguments present: {}'.format(' '.join(items)), file=sys.stderr)
         input(_('Press Enter to quit'))
-    return run(args, text, items)
+    return run(opts, text, items)
 
 
 def linenum_handle_result(args, data, target_window_id, boss, extra_cli_args, *a):

kitty/config_data.py

@@ -6,7 +6,7 @@
 import os
 from gettext import gettext as _
 from typing import (
-    Any, Dict, FrozenSet, Iterable, List, Optional, Set, Tuple, TypeVar, Union, cast
+    Any, Dict, FrozenSet, Iterable, List, Optional, Set, Tuple, TypeVar, Union
 )
 
 from . import fast_data_types as defines
@@ -792,7 +792,7 @@ separated by a configurable separator, and the powerline shows the tabs as a con
 
 
 def tab_bar_min_tabs(x: str) -> int:
-    return cast(int, max(1, positive_int(x)))
+    return max(1, positive_int(x))
 
 
 o('tab_bar_min_tabs', 2, option_type=tab_bar_min_tabs, long_text=_('''
@@ -1076,7 +1076,7 @@ def macos_titlebar_color(x: str) -> int:
         return 0
     if x == 'background':
         return 1
-    return cast(int, (color_as_int(to_color(x)) << 8) | 2)
+    return (color_as_int(to_color(x)) << 8) | 2
 
 
 o('macos_titlebar_color', 'system', option_type=macos_titlebar_color, long_text=_('''

mypy-editor-integration

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+
+import subprocess
+import sys
+
+files = [x for x in sys.argv[1:] if not x.startswith('-')]
+if not files:
+    raise SystemExit(subprocess.Popen(['mypy'] + sys.argv[1:]).wait())
+
+output = subprocess.run('dmypy run -- --follow-imports=error --show-column-numbers --no-color-output'.split(), stdout=subprocess.PIPE).stdout
+q = files[0] + ':'
+for line in output.decode('utf-8').splitlines():
+    if line.startswith(q):
+        print(line)

session.vim

@@ -1,6 +1,7 @@
 " Scan the following dirs recursively for tags
 let g:project_tags_dirs = ['kitty', 'kittens']
-let g:syntastic_python_checkers = ['pylama']
+let g:syntastic_python_checkers = ['mypy', 'flake8']
+let g:syntastic_python_mypy_exec = './mypy-editor-integration'
 let g:ycm_python_binary_path = 'python3'
 set wildignore+==template.py
 set wildignore+=tags

setup.cfg

@@ -13,25 +13,6 @@ blank_line_before_nested_class_or_def = True
 combine_as_imports = True
 multi_line_output = 5
 
-[pylama]
-linters=mypy,pycodestyle,pyflakes
-
-[pylama:pycodestyle]
-max_line_length = 120
-exclude==template.py,linux-package
-
-[pylama:mypy]
-files = kitty,kittens,glfw,*.py,docs/conf.py
-no_implicit_optional = True
-sqlite_cache = True
-cache_fine_grained = True
-warn_redundant_casts = True
-warn_unused_ignores = True
-warn_return_any = True
-warn_unreachable = True
-warn_no_return = False
-check_untyped_defs = True
-
 [mypy]
 files = kitty,kittens,glfw,*.py,docs/conf.py
 no_implicit_optional = True
@@ -42,4 +23,6 @@ warn_unused_ignores = True
 warn_return_any = True
 warn_unreachable = True
 warn_no_return = False
-# check_untyped_defs = True
+warn_unused_configs = True
+check_untyped_defs = True
+# disallow_untyped_defs = True

test.py

@@ -2,15 +2,16 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
-import unittest
+import importlib
 import os
 import sys
-import importlib
+import unittest
+from typing import NoReturn
 
 base = os.path.dirname(os.path.abspath(__file__))
 
 
-def init_env():
+def init_env() -> None:
     sys.path.insert(0, base)
 
 
@@ -65,16 +66,13 @@ def filter_tests_by_module(suite, *names):
     return filter_tests(suite, q)
 
 
-def type_check():
+def type_check() -> NoReturn:
     init_env()
-    from kitty.cli_stub import generate_stub
+    from kitty.cli_stub import generate_stub  # type:ignore
     generate_stub()
-    from kitty.options_stub import generate_stub
+    from kitty.options_stub import generate_stub  # type: ignore
     generate_stub()
-    if 'CI' in os.environ:
-        os.execlp('mypy', 'mypy')
-    else:
-        os.execlp('dmypy', 'dmypy', 'run', '--', '--follow-imports=error')
+    os.execlp('mypy', 'mypy', '--pretty')
 
 
 def run_tests():