From 3b65c915c71c7b13344918d6fc524bc9f30394e5 Mon Sep 17 00:00:00 2001
From: Daniel Eades <danieleades@hotmail.com>
Date: Wed, 15 Sep 2021 18:04:13 +0100
Subject: [PATCH 1/3] set up mypy hook for incremental adoption

---
 .pre-commit-config.yaml | 10 ++++++++++
 mypy.ini                | 39 +++++++++++++++++++++++++++++++++++++++
 poetry/__init__.py      |  3 ++-
 poetry/poetry.py        |  3 ++-
 4 files changed, 53 insertions(+), 2 deletions(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b6a282e11fc..c5fb1ffe8ec 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,6 +10,16 @@ repos:
       - id: flake8
         additional_dependencies: [flake8-bugbear]
 
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v0.910
+    hooks:
+      - id: mypy
+        pass_filenames: false
+        additional_dependencies:
+          - types-requests
+        args:
+          - poetry
+
   - repo: https://github.com/timothycrosley/isort
     rev: 5.7.0
     hooks:
diff --git a/mypy.ini b/mypy.ini
index 9ab0f390a88..db66abac730 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -6,3 +6,42 @@ strict_optional = True
 warn_unused_ignores = True
 warn_redundant_casts = True
 warn_unused_configs = True
+
+[mypy-poetry.config.*]
+ignore_errors = True
+
+[mypy-poetry.console.*]
+ignore_errors = True
+
+[mypy-poetry.factory.*]
+ignore_errors = True
+
+[mypy-poetry.inspection.*]
+ignore_errors = True
+
+[mypy-poetry.installation.*]
+ignore_errors = True
+
+[mypy-poetry.locations.*]
+ignore_errors = True
+
+[mypy-poetry.mixology.*]
+ignore_errors = True
+
+[mypy-poetry.packages.*]
+ignore_errors = True
+
+[mypy-poetry.plugins.*]
+ignore_errors = True
+
+[mypy-poetry.publishing.*]
+ignore_errors = True
+
+[mypy-poetry.puzzle.*]
+ignore_errors = True
+
+[mypy-poetry.repositories.*]
+ignore_errors = True
+
+[mypy-poetry.utils.*]
+ignore_errors = True
diff --git a/poetry/__init__.py b/poetry/__init__.py
index 26cfe4052b1..0bd1cd515c0 100644
--- a/poetry/__init__.py
+++ b/poetry/__init__.py
@@ -1,4 +1,5 @@
 from pkgutil import extend_path
+from typing import List
 
 
-__path__ = extend_path(__path__, __name__)
+__path__: List[str] = extend_path(__path__, __name__)
diff --git a/poetry/poetry.py b/poetry/poetry.py
index 95814330e4a..8365bffec79 100644
--- a/poetry/poetry.py
+++ b/poetry/poetry.py
@@ -1,6 +1,7 @@
 from pathlib import Path
 from typing import TYPE_CHECKING
 from typing import List
+from typing import Optional
 
 from poetry.__version__ import __version__
 from poetry.config.source import Source
@@ -35,7 +36,7 @@ def __init__(
         self._locker = locker
         self._config = config
         self._pool = Pool()
-        self._plugin_manager = None
+        self._plugin_manager: Optional[PluginManager] = None
 
     @property
     def locker(self) -> "Locker":

From c20212f4621fc92d8259414ea660429d99cbbccf Mon Sep 17 00:00:00 2001
From: Daniel Eades <danieleades@hotmail.com>
Date: Sat, 13 Nov 2021 07:08:27 +0000
Subject: [PATCH 2/3] add description to mypy whitelist

---
 mypy.ini | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/mypy.ini b/mypy.ini
index db66abac730..a6be534c118 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -7,6 +7,12 @@ warn_unused_ignores = True
 warn_redundant_casts = True
 warn_unused_configs = True
 
+# The following whitelist is used to allow for incremental adoption
+# of Mypy. Modules should be removed from this whitelist as and when
+# their respective type errors have been addressed. No new modules
+# should be added to this whitelist.
+# see https://github.com/python-poetry/poetry-core/pull/199.
+
 [mypy-poetry.config.*]
 ignore_errors = True
 
@@ -45,3 +51,5 @@ ignore_errors = True
 
 [mypy-poetry.utils.*]
 ignore_errors = True
+
+# end of whitelist

From 160806e9f94f001de53dffe6e7158409558cb510 Mon Sep 17 00:00:00 2001
From: Daniel Eades <danieleades@hotmail.com>
Date: Sat, 13 Nov 2021 07:10:48 +0000
Subject: [PATCH 3/3] fix copy-paste error

---
 mypy.ini | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mypy.ini b/mypy.ini
index a6be534c118..2bc2c873fa3 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -11,7 +11,7 @@ warn_unused_configs = True
 # of Mypy. Modules should be removed from this whitelist as and when
 # their respective type errors have been addressed. No new modules
 # should be added to this whitelist.
-# see https://github.com/python-poetry/poetry-core/pull/199.
+# see https://github.com/python-poetry/poetry/pull/4510.
 
 [mypy-poetry.config.*]
 ignore_errors = True