Closes #36

.pre-commit-config.yaml

@@ -2,7 +2,7 @@
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
   - repo: https://github.com/psf/black
-    rev: 21.6b0
+    rev: 22.3.0
     hooks:
       - id: black
   - repo: https://github.com/Lucas-C/pre-commit-hooks-markup

pylsp_mypy/_version.py

@@ -1 +1 @@
-__version__ = "0.5.8"
+__version__ = "0.6.0"

pylsp_mypy/plugin.py

@@ -42,6 +42,14 @@
 # https://github.com/python-lsp/python-lsp-server/blob/v1.0.1/pylsp/plugins/pylint_lint.py#L55-L62
 last_diagnostics: Dict[str, List[Dict[str, Any]]] = collections.defaultdict(list)
 
+# Windows started opening opening a cmd-like window for every subprocess call
+# This flag prevents that.
+# This flag is new in python 3.7
+# THis flag only exists on Windows
+windows_flag: Dict[str, int] = (
+    {"startupinfo": subprocess.CREATE_NO_WINDOW} if os.name == "nt" else {}  # type: ignore
+)
+
 
 def parse_line(line: str, document: Optional[Document] = None) -> Optional[Dict[str, Any]]:
     """
@@ -214,7 +222,7 @@ def pylsp_lint(
             # -> use mypy on path
             log.info("executing mypy args = %s on path", args)
             completed_process = subprocess.run(
-                ["mypy", *args], stdout=subprocess.PIPE, stderr=subprocess.PIPE
+                ["mypy", *args], stdout=subprocess.PIPE, stderr=subprocess.PIPE, **windows_flag
             )
             report = completed_process.stdout.decode()
             errors = completed_process.stderr.decode()
@@ -234,15 +242,15 @@ def pylsp_lint(
             # dmypy exists on path
             # -> use mypy on path
             completed_process = subprocess.run(
-                ["dmypy", *apply_overrides(args, overrides)], stderr=subprocess.PIPE
+                ["dmypy", *apply_overrides(args, overrides)], stderr=subprocess.PIPE, **windows_flag
             )
             _err = completed_process.stderr.decode()
             _status = completed_process.returncode
             if _status != 0:
                 log.info(
                     "restarting dmypy from status: %s message: %s via path", _status, _err.strip()
                 )
-                subprocess.run(["dmypy", "kill"])
+                subprocess.run(["dmypy", "kill"], **windows_flag)
         else:
             # dmypy does not exist on path, but must exist in the env pylsp-mypy is installed in
             # -> use dmypy via api
@@ -261,7 +269,7 @@ def pylsp_lint(
             # -> use mypy on path
             log.info("dmypy run args = %s via path", args)
             completed_process = subprocess.run(
-                ["dmypy", *args], stdout=subprocess.PIPE, stderr=subprocess.PIPE
+                ["dmypy", *args], stdout=subprocess.PIPE, stderr=subprocess.PIPE, **windows_flag
             )
             report = completed_process.stdout.decode()
             errors = completed_process.stderr.decode()

pyproject.toml

@@ -23,7 +23,7 @@ live_mode = true
 strict = true
 
 [tool.mypy]
-python_version = "3.6"
+python_version = "3.7"
 
 [[tool.mypy.overrides]]
 module = "pylsp.*"

setup.cfg

@@ -10,14 +10,13 @@ classifiers =
     Intended Audience :: Developers
     Topic :: Software Development
     License :: OSI Approved :: MIT License
-    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
 
 [options]
-python_requires = >= 3.6
+python_requires = >= 3.7
 packages = find:
 install_requires =
     python-lsp-server