From 199804da172d7b9f66511be92c271a495b7b9c3a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Danie=CC=88l=20de=20Kok?= <me@danieldk.eu>
Date: Thu, 18 Apr 2024 16:03:26 +0200
Subject: [PATCH] Remove support for Python versions prior to 3.9

---
 .github/workflows/tests.yml | 11 +----------
 build-constraints.txt       |  4 ----
 requirements.txt            | 12 ++----------
 setup.cfg                   | 12 ++----------
 4 files changed, 5 insertions(+), 34 deletions(-)

diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cd569bafa..623e079e0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -23,7 +23,7 @@ jobs:
       - name: Configure Python version
         uses: actions/setup-python@v4
         with:
-          python-version: "3.7"
+          python-version: "3.9"
           architecture: x64
 
       - name: black
@@ -48,12 +48,6 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         python_version: ["3.12"]
         include:
-          - os: windows-2019
-            python_version: "3.6"
-          - os: macos-latest
-            python_version: "3.7"
-          - os: ubuntu-latest
-            python_version: "3.8"
           - os: windows-latest
             python_version: "3.9"
           - os: macos-latest
@@ -87,9 +81,6 @@ jobs:
 
       - name: Run mypy
         run: python -m mypy thinc --no-implicit-reexport
-        if: |
-          matrix.python_version != '3.6' &&
-          matrix.python_version != '3.7'
 
       - name: Delete source directory
         run: rm -rf thinc
diff --git a/build-constraints.txt b/build-constraints.txt
index 5540d634d..033ce367f 100644
--- a/build-constraints.txt
+++ b/build-constraints.txt
@@ -1,6 +1,2 @@
 # build version constraints for use with wheelwright + multibuild
-numpy==1.15.0; python_version<='3.7' and platform_machine!='aarch64'
-numpy==1.19.2; python_version<='3.7' and platform_machine=='aarch64'
-numpy==1.17.3; python_version=='3.8' and platform_machine!='aarch64'
-numpy==1.19.2; python_version=='3.8' and platform_machine=='aarch64'
 numpy>=1.25.0; python_version>='3.9'
diff --git a/requirements.txt b/requirements.txt
index 3e3c9901e..ac1a0ffc5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,13 +10,8 @@ confection>=0.0.1,<1.0.0
 ml_datasets>=0.2.0,<0.3.0; python_version < "3.11"
 # Third-party dependencies
 pydantic>=1.7.4,!=1.8,!=1.8.1,<3.0.0
-numpy>=1.15.0; python_version < "3.9"
-numpy>=1.19.0; python_version >= "3.9"
+numpy>=1.19.0
 packaging>=20.0
-# Backports of modern Python features
-dataclasses>=0.6,<1.0; python_version < "3.7"
-typing_extensions>=3.7.4.1,<4.5.0; python_version < "3.8"
-contextvars>=2.4,<3; python_version < "3.7"
 # Development dependencies
 cython>=0.25.0,<3.0
 hypothesis>=3.27.0,<6.72.2
@@ -25,11 +20,8 @@ pytest-cov>=2.7.0,<5.0.0
 coverage>=5.0.0,<8.0.0
 mock>=2.0.0,<3.0.0
 flake8>=3.5.0,<3.6.0
-mypy>=1.5.0,<1.6.0; platform_machine != "aarch64" and python_version >= "3.8"
+mypy>=1.5.0,<1.6.0; platform_machine != "aarch64"
 types-mock>=0.1.1
-types-contextvars>=0.1.2; python_version < "3.7"
-types-dataclasses>=0.1.3; python_version < "3.7"
-importlib_resources; python_version < "3.7"
 # Executing notebook tests
 ipykernel>=5.1.4,<5.2.0
 nbconvert>=5.6.1,<6.2.0
diff --git a/setup.cfg b/setup.cfg
index fc154e629..456e6a77c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,9 +17,6 @@ classifiers =
     Operating System :: Microsoft :: Windows
     Programming Language :: Cython
     Programming Language :: Python :: 3
-    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
     Programming Language :: Python :: 3.11
@@ -29,7 +26,7 @@ classifiers =
 [options]
 zip_safe = false
 include_package_data = true
-python_requires = >=3.6
+python_requires = >=3.9
 setup_requires =
     cython>=0.25,<3.0
     numpy>=1.15.0
@@ -50,14 +47,9 @@ install_requires =
     confection>=0.0.1,<1.0.0
     # Third-party dependencies
     setuptools
-    numpy>=1.15.0; python_version < "3.9"
-    numpy>=1.19.0; python_version >= "3.9"
+    numpy>=1.19.0
     pydantic>=1.7.4,!=1.8,!=1.8.1,<3.0.0
     packaging>=20.0
-    # Backports of modern Python features
-    dataclasses>=0.6,<1.0; python_version < "3.7"
-    typing_extensions>=3.7.4.1,<4.5.0; python_version < "3.8"
-    contextvars>=2.4,<3; python_version < "3.7"
     
 [options.entry_points]
 pytest_randomly.random_seeder =