diff --git a/python/pyproject.toml b/python/pyproject.toml
index f172780..706778e 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -74,6 +74,7 @@ dev = [
     "setuptools",
     "types-appdirs",
     "types-colorama",
+    "types-setuptools",
     "types-tqdm",
 ]
 
@@ -88,50 +89,21 @@ line-length = 100
 extend-select = ["I"]
 
 [tool.dev-cmd.commands]
-clean = [
-    "python",
-    "-c",
-    """\
-import os
-import shutil
-import sys
-
-import colors
-
-
-# The MyPy cache can get corrupted by swithing Pythons with `uv ... --python ...' and re-building
-# the .venv is cheap; so we clean these as a more restricted form than `git clean -fdx`
-for cache_dir in '.mypy_cache', '.venv':
-    if os.path.exists(cache_dir):
-        shutil.rmtree(cache_dir, ignore_errors=True)
-        print(colors.green(f"Removed directory `{cache_dir}`."), file=sys.stderr)
-    """
-]
-
 fmt = ["ruff", "format"]
 check-fmt = ["ruff", "format", "--diff"]
 
 lint = ["ruff", "check", "--fix"]
 check-lint = ["ruff", "check"]
 
-type-check = ["mypy", "insta_science", "scripts", "test-support", "tests"]
-type-check-38 = [
-    "mypy", "--python-version", "3.8", "insta_science", "scripts", "test-support", "tests"
-]
-type-check-39 = [
-    "mypy", "--python-version", "3.9", "insta_science", "scripts", "test-support", "tests"
-]
-type-check-310 = [
-    "mypy", "--python-version", "3.10", "insta_science", "scripts", "test-support", "tests"
-]
-type-check-311 = [
-    "mypy", "--python-version", "3.11", "insta_science", "scripts", "test-support", "tests"
-]
-type-check-312 = [
-    "mypy", "--python-version", "3.12", "insta_science", "scripts", "test-support", "tests"
-]
-type-check-313 = [
-    "mypy", "--python-version", "3.13", "insta_science", "scripts", "test-support", "tests"
+type-check = [
+    "mypy",
+    "--python-version", "{-py:{markers.python_version}}",
+    "--cache-dir", ".mypy_cache_{markers.python_version}",
+    "setup.py",
+    "insta_science",
+    "scripts",
+    "test-support",
+    "tests",
 ]
 
 [tool.dev-cmd.commands.release]
@@ -148,15 +120,8 @@ accepts-extra-args = true
 checks = [
     "fmt",
     "lint",
-    [
-        "type-check-38",
-        "type-check-39",
-        "type-check-310",
-        "type-check-311",
-        "type-check-312",
-        "type-check-313",
-    ],
-    "test"
+    ["type-check-py3.{8..13}"],
+    "test",
 ]
 ci = [["check-fmt", "check-lint", "type-check"], "test"]
 
diff --git a/python/setup.py b/python/setup.py
index f47fbcc..d94ea9a 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -1,6 +1,8 @@
 # Copyright 2025 Science project contributors.
 # Licensed under the Apache License, Version 2.0 (see LICENSE).
 
+from __future__ import annotations
+
 import atexit
 import shutil
 import tempfile
diff --git a/python/uv.lock b/python/uv.lock
index 2b31020..d69f697 100644
--- a/python/uv.lock
+++ b/python/uv.lock
@@ -88,18 +88,19 @@ wheels = [
 
 [[package]]
 name = "dev-cmd"
-version = "0.11.1"
+version = "0.12.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "aioconsole" },
     { name = "ansicolors" },
     { name = "colorama", marker = "sys_platform == 'win32'" },
+    { name = "packaging" },
     { name = "tomli", marker = "python_full_version < '3.11'" },
     { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/71/05/9fd907b1ad956cd8979faa2e5bd00c4866c03e97b42172702c8f29dc0bc4/dev_cmd-0.11.1.tar.gz", hash = "sha256:4a9d30bb399b7cb6e1948c882ad883d54a6e8b77cb65f0c377220ccf7927ace3", size = 41158 }
+sdist = { url = "https://files.pythonhosted.org/packages/de/a2/823d13b9e22cdf13c10374502af2112e0c0dd6b60a49acda2e2777471ada/dev_cmd-0.12.0.tar.gz", hash = "sha256:dc032b71eb812f4dcba36fa36df3b8a88a8b2d3eb84763fbd8e5081608421b9f", size = 38949 }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/70/0f/c4c66db5807a9a1527982eebd4ba62a2f76efcc6fb8b7e9d2c63bc3b4cc2/dev_cmd-0.11.1-py3-none-any.whl", hash = "sha256:395f0ac099e8ec40736b3865602c809082b84bb28c9bd062fd06ba35e7b9954e", size = 27068 },
+    { url = "https://files.pythonhosted.org/packages/70/49/698970311e1031492906d42f1add367ee17795d7403a9ec320eae0801f4e/dev_cmd-0.12.0-py3-none-any.whl", hash = "sha256:01e2eb3c7878246080fa17f4068db0c59a39a5d4375cf92cbc4070aea69624a5", size = 32469 },
 ]
 
 [[package]]
@@ -187,7 +188,6 @@ wheels = [
 
 [[package]]
 name = "insta-science"
-version = "0.5.0"
 source = { editable = "." }
 dependencies = [
     { name = "ansicolors" },
@@ -214,6 +214,7 @@ dev = [
     { name = "setuptools", version = "75.8.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.9'" },
     { name = "types-appdirs" },
     { name = "types-colorama" },
+    { name = "types-setuptools" },
     { name = "types-tqdm" },
 ]
 
@@ -242,6 +243,7 @@ dev = [
     { name = "setuptools" },
     { name = "types-appdirs" },
     { name = "types-colorama" },
+    { name = "types-setuptools" },
     { name = "types-tqdm" },
 ]
 
@@ -510,6 +512,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/d7/01/485b3026ff90e5190b5e24f1711522e06c79f4a56c8f4b95848ac072e20f/types_requests-2.32.0.20241016-py3-none-any.whl", hash = "sha256:4195d62d6d3e043a4eaaf08ff8a62184584d2e8684e9d2aa178c7915a7da3747", size = 15836 },
 ]
 
+[[package]]
+name = "types-setuptools"
+version = "75.8.0.20250110"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/f7/42/5713e90d4f9683f2301d900f33e4fc2405ad8ac224dda30f6cb7f4cd215b/types_setuptools-75.8.0.20250110.tar.gz", hash = "sha256:96f7ec8bbd6e0a54ea180d66ad68ad7a1d7954e7281a710ea2de75e355545271", size = 48185 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/cf/a3/dbfd106751b11c728cec21cc62cbfe7ff7391b935c4b6e8f0bdc2e6fd541/types_setuptools-75.8.0.20250110-py3-none-any.whl", hash = "sha256:a9f12980bbf9bcdc23ecd80755789085bad6bfce4060c2275bc2b4ca9f2bc480", size = 71521 },
+]
+
 [[package]]
 name = "types-tqdm"
 version = "4.67.0.20241221"