refactor(templates): Drop support for Python 3.8 in templates

cookiecutter/mapper-template/{{cookiecutter.mapper_id}}/.github/workflows/test.yml

@@ -33,7 +33,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-        - "3.8"
         - "3.9"
         - "3.10"
         - "3.11"

cookiecutter/mapper-template/{{cookiecutter.mapper_id}}/pyproject.toml

@@ -16,7 +16,6 @@ keywords = [
 classifiers = [
     "Intended Audience :: Developers",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -30,7 +29,7 @@ packages = [
 {%- endif %}
 
 [tool.poetry.dependencies]
-python = ">=3.8"
+python = ">=3.9"
 singer-sdk = { version="~=0.40.0"{{ ', extras = ["faker"]' if cookiecutter.faker_extra }} }
 fs-s3fs = { version = "~=1.1.1", optional = true }
 
@@ -50,7 +49,7 @@ warn_unused_configs = true
 
 [tool.ruff]
 src = ["{{cookiecutter.library_name}}"]
-target-version = "py38"
+target-version = "py39"
 
 [tool.ruff.lint]
 ignore = [

cookiecutter/mapper-template/{{cookiecutter.mapper_id}}/tox.ini

@@ -1,7 +1,7 @@
 # This file can be used to customize tox tests as well as other test frameworks like flake8 and mypy
 
 [tox]
-envlist = py{38,39,310,311,312}
+envlist = py{39,310,311,312}
 isolated_build = true
 
 [testenv]
@@ -13,7 +13,7 @@ commands =
 [testenv:pytest]
 # Run the python tests.
 # To execute, run `tox -e pytest`
-envlist = py{38,39,310,311,312}
+envlist = py{39,310,311,312}
 commands =
     poetry install -v
     poetry run pytest

cookiecutter/mapper-template/{{cookiecutter.mapper_id}}/{{cookiecutter.library_name}}/mapper.py

@@ -3,14 +3,13 @@
 from __future__ import annotations
 
 import typing as t
-from typing import TYPE_CHECKING
 
 import singer_sdk.typing as th
 from singer_sdk import _singerlib as singer
 from singer_sdk.mapper import PluginMapper
 from singer_sdk.mapper_base import InlineMapper
 
-if TYPE_CHECKING:
+if t.TYPE_CHECKING:
     from pathlib import PurePath
 
 

cookiecutter/tap-template/{{cookiecutter.tap_id}}/.github/workflows/test.yml

@@ -33,7 +33,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-        - "3.8"
         - "3.9"
         - "3.10"
         - "3.11"

cookiecutter/tap-template/{{cookiecutter.tap_id}}/pyproject.toml

@@ -15,7 +15,6 @@ keywords = [
 classifiers = [
     "Intended Audience :: Developers",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -29,7 +28,7 @@ packages = [
 {%- endif %}
 
 [tool.poetry.dependencies]
-python = ">=3.8"
+python = ">=3.9"
 importlib-resources = { version = "==6.4.*", python = "<3.9" }
 singer-sdk = { version="~=0.40.0", extras = [
     {%- if cookiecutter.auth_method == "JWT" -%}"jwt", {% endif -%}
@@ -65,7 +64,7 @@ plugins = "sqlmypy"
 
 [tool.ruff]
 src = ["{{cookiecutter.library_name}}"]
-target-version = "py38"
+target-version = "py39"
 
 [tool.ruff.lint]
 ignore = [

cookiecutter/tap-template/{{cookiecutter.tap_id}}/tox.ini

@@ -1,7 +1,7 @@
 # This file can be used to customize tox tests as well as other test frameworks like flake8 and mypy
 
 [tox]
-envlist = py{38,39,310,311,312}
+envlist = py{39,310,311,312}
 isolated_build = true
 
 [testenv]
@@ -13,7 +13,7 @@ commands =
 [testenv:pytest]
 # Run the python tests.
 # To execute, run `tox -e pytest`
-envlist = py{38,39,310,311,312}
+envlist = py{39,310,311,312}
 commands =
     poetry install -v
     poetry run pytest

cookiecutter/tap-template/{{cookiecutter.tap_id}}/{{cookiecutter.library_name}}/graphql-client.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Iterable
+import typing as t
 
 import requests  # noqa: TCH002
 from singer_sdk.streams import {{ cookiecutter.stream_type }}Stream
@@ -12,7 +12,7 @@
 from {{ cookiecutter.library_name }}.auth import {{ cookiecutter.source_name }}Authenticator
 {%- endif %}
 
-if TYPE_CHECKING:
+if t.TYPE_CHECKING:
     from singer_sdk.helpers.types import Context
 
 
@@ -54,7 +54,7 @@ def http_headers(self) -> dict:
 {%- endif %}
         return headers
 
-    def parse_response(self, response: requests.Response) -> Iterable[dict]:
+    def parse_response(self, response: requests.Response) -> t.Iterable[dict]:
         """Parse the response and return an iterator of result records.
 
         Args:

cookiecutter/tap-template/{{cookiecutter.tap_id}}/{{cookiecutter.library_name}}/other-client.py

@@ -2,11 +2,11 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Iterable
+import typing as t
 
 from singer_sdk.streams import Stream
 
-if TYPE_CHECKING:
+if t.TYPE_CHECKING:
     from singer_sdk.helpers.types import Context
 
 
@@ -16,7 +16,7 @@ class {{ cookiecutter.source_name }}Stream(Stream):
     def get_records(
         self,
         context: Context | None,  # noqa: ARG002
-    ) -> Iterable[dict]:
+    ) -> t.Iterable[dict]:
         """Return a generator of record-type dictionary objects.
 
         The optional `context` argument is used to identify a specific slice of the

cookiecutter/tap-template/{{cookiecutter.tap_id}}/{{cookiecutter.library_name}}/rest-client.py

@@ -2,11 +2,11 @@
 
 from __future__ import annotations
 
-import sys
-{%- if cookiecutter.auth_method in ("OAuth2", "JWT") %}
+import typing as t
+{% if cookiecutter.auth_method in ("OAuth2", "JWT") -%}
 from functools import cached_property
-{%- endif %}
-from typing import TYPE_CHECKING, Any, Iterable
+{% endif -%}
+from importlib import resources
 
 {% if cookiecutter.auth_method  == "API Key" -%}
 from singer_sdk.authenticators import APIKeyAuthenticator
@@ -40,12 +40,7 @@
 
 {% endif -%}
 
-if sys.version_info >= (3, 9):
-    import importlib.resources as importlib_resources
-else:
-    import importlib_resources
-
-if TYPE_CHECKING:
+if t.TYPE_CHECKING:
     import requests
     {%- if cookiecutter.auth_method in ("OAuth2", "JWT") %}
     from singer_sdk.helpers.types import Auth, Context
@@ -55,7 +50,7 @@
 
 
 # TODO: Delete this is if not using json files for schema definition
-SCHEMAS_DIR = importlib_resources.files(__package__) / "schemas"
+SCHEMAS_DIR = resources.files(__package__) / "schemas"
 
 
 class {{ cookiecutter.source_name }}Stream({{ cookiecutter.stream_type }}Stream):
@@ -164,8 +159,8 @@ def get_new_paginator(self) -> BaseAPIPaginator:
     def get_url_params(
         self,
         context: Context | None,  # noqa: ARG002
-        next_page_token: Any | None,  # noqa: ANN401
-    ) -> dict[str, Any]:
+        next_page_token: t.Any | None,  # noqa: ANN401
+    ) -> dict[str, t.Any]:
         """Return a dictionary of values to be used in URL parameterization.
 
         Args:
@@ -186,7 +181,7 @@ def get_url_params(
     def prepare_request_payload(
         self,
         context: Context | None,  # noqa: ARG002
-        next_page_token: Any | None,  # noqa: ARG002, ANN401
+        next_page_token: t.Any | None,  # noqa: ARG002, ANN401
     ) -> dict | None:
         """Prepare the data payload for the REST API request.
 
@@ -202,7 +197,7 @@ def prepare_request_payload(
         # TODO: Delete this method if no payload is required. (Most REST APIs.)
         return None
 
-    def parse_response(self, response: requests.Response) -> Iterable[dict]:
+    def parse_response(self, response: requests.Response) -> t.Iterable[dict]:
         """Parse the response and return an iterator of result records.
 
         Args:

cookiecutter/tap-template/{{cookiecutter.tap_id}}/{{cookiecutter.library_name}}/sql-client.py

@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Iterable
+import typing as t
 
 import sqlalchemy  # noqa: TCH002
 from singer_sdk import SQLConnector, SQLStream
@@ -77,7 +77,7 @@ class {{ cookiecutter.source_name }}Stream(SQLStream):
 
     connector_class = {{ cookiecutter.source_name }}Connector
 
-    def get_records(self, partition: dict | None) -> Iterable[dict[str, Any]]:
+    def get_records(self, partition: dict | None) -> t.Iterable[dict[str, t.Any]]:
         """Return a generator of record-type dictionary objects.
 
         Developers may optionally add custom logic before calling the default

cookiecutter/tap-template/{{cookiecutter.tap_id}}/{{cookiecutter.library_name}}/streams.py

@@ -2,21 +2,15 @@
 
 from __future__ import annotations
 
-import sys
 import typing as t
+from importlib import resources
 
 from singer_sdk import typing as th  # JSON Schema typing helpers
 
 from {{ cookiecutter.library_name }}.client import {{ cookiecutter.source_name }}Stream
 
-if sys.version_info >= (3, 9):
-    import importlib.resources as importlib_resources
-else:
-    import importlib_resources
-
-
 # TODO: Delete this is if not using json files for schema definition
-SCHEMAS_DIR = importlib_resources.files(__package__) / "schemas"
+SCHEMAS_DIR = resources.files(__package__) / "schemas"
 
 
 {%- if cookiecutter.stream_type == "GraphQL" %}

cookiecutter/target-template/{{cookiecutter.target_id}}/.github/workflows/test.yml

@@ -33,7 +33,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-        - "3.8"
         - "3.9"
         - "3.10"
         - "3.11"

cookiecutter/target-template/{{cookiecutter.target_id}}/pyproject.toml

@@ -15,7 +15,6 @@ keywords = [
 classifiers = [
     "Intended Audience :: Developers",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -29,7 +28,7 @@ packages = [
 {%- endif %}
 
 [tool.poetry.dependencies]
-python = ">=3.8"
+python = ">=3.9"
 singer-sdk = { version="~=0.40.0"{{ ', extras = ["faker"]' if cookiecutter.faker_extra }} }
 fs-s3fs = { version = "~=1.1.1", optional = true }
 {%- if cookiecutter.serialization_method != "SQL" %}
@@ -52,7 +51,7 @@ warn_unused_configs = true
 
 [tool.ruff]
 src = ["{{cookiecutter.library_name}}"]
-target-version = "py38"
+target-version = "py39"
 
 [tool.ruff.lint]
 ignore = [

cookiecutter/target-template/{{cookiecutter.target_id}}/tox.ini

@@ -1,7 +1,7 @@
 # This file can be used to customize tox tests as well as other test frameworks like flake8 and mypy
 
 [tox]
-envlist = py{38,39,310,311,312}
+envlist = py{39,310,311,312}
 isolated_build = true
 
 [testenv]
@@ -13,7 +13,7 @@ commands =
 [testenv:pytest]
 # Run the python tests.
 # To execute, run `tox -e pytest`
-envlist = py{38,39,310,311,312}
+envlist = py{39,310,311,312}
 commands =
     poetry install -v
     poetry run pytest

samples/sample_tap_dummy_json/pyproject.toml

@@ -11,7 +11,6 @@ keywords = [
 classifiers = [
     "Intended Audience :: Developers",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -20,13 +19,13 @@ classifiers = [
 license = "Apache-2.0"
 
 [tool.poetry.dependencies]
-python = ">=3.8"
+python = ">=3.9"
 requests = "~=2.32.3"
-singer-sdk = { version="~=0.38.0", extras = [] }
+singer-sdk = {path = "../..", develop = true}
 
 [tool.poetry.group.dev.dependencies]
 pytest = ">=8"
-singer-sdk = { version="~=0.38.0", extras = ["testing"] }
+singer-sdk = {path = "../..", develop = true, extras = ["testing"]}
 
 [tool.poetry.extras]
 s3 = ["fs-s3fs"]
@@ -36,7 +35,7 @@ python_version = "3.12"
 warn_unused_configs = true
 
 [build-system]
-requires = ["poetry-core==1.9.0"]
+requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
 
 [tool.poetry.scripts]