ci: resolve the declared dependency floors on every matrix entry

Author: lesnik512

.github/workflows/_checks.yml

@@ -59,6 +59,38 @@ jobs:
       - run: just install
       - run: uv run --no-sync python -c "import sys; assert not sys._is_gil_enabled(), 'GIL is enabled'"
       - run: just test-ci
+  floors:
+    # Every other job resolves newest, so the declared floors are a claim nothing installs.
+    # This one resolves the bottom of each range, on every matrix entry: wheel coverage is
+    # per interpreter, so two interpreters resolving the same versions can still disagree
+    # on whether those versions install.
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+          - "3.11"
+          - "3.12"
+          - "3.13"
+          - "3.14"
+          - "3.14t"
+    steps:
+      - uses: actions/checkout@v6
+      - uses: astral-sh/setup-uv@v8.2.0
+        with:
+          enable-cache: true
+          cache-dependency-glob: "**/pyproject.toml"
+      - run: uv python install ${{ matrix.python-version }}
+      - run: uv python pin ${{ matrix.python-version }}
+      # --no-build so a floor with no wheel for this interpreter fails here instead of
+      # quietly compiling its sdist; --no-install-project because that flag would refuse to
+      # build this project too, and the tests import it from the checkout.
+      - run: uv sync --all-extras --no-install-project --resolution lowest-direct --no-build
+      - run: uv run --no-sync pytest
+        env:
+          # The isolation tests spawn a fresh interpreter, which does not inherit pytest's sys.path.
+          PYTHONPATH: src
+
   links:
     runs-on: ubuntu-latest
     steps:

pyproject.toml

@@ -39,14 +39,18 @@ dependencies = [
 
 [project.optional-dependencies]
 pydantic = [
-    "pydantic>=2.0,<3.0; python_version < '3.14'",
-    # pydantic-core ships no cp314 wheel before pydantic 2.12.
+    # pydantic-core ships no cp312 wheel before pydantic 2.1, no cp313 wheel before 2.8.1 and no
+    # cp314 wheel before 2.12.
+    "pydantic>=2.0,<3.0; python_version < '3.12'",
+    "pydantic>=2.1,<3.0; python_version == '3.12'",
+    "pydantic>=2.8.1,<3.0; python_version == '3.13'",
     "pydantic>=2.12,<3.0; python_version >= '3.14'",
 ]
 msgspec = [
     # 0.18.5 is the first release whose can_decode agrees with decode on Annotated types;
-    # 0.20 is the first with a cp314 wheel.
-    "msgspec>=0.18.5; python_version < '3.14'",
+    # 0.19 is the first with a cp313 wheel and 0.20 the first with a cp314 one.
+    "msgspec>=0.18.5; python_version < '3.13'",
+    "msgspec>=0.19; python_version == '3.13'",
     "msgspec>=0.20; python_version >= '3.14'",
 ]
 otel = ["opentelemetry-api>=1.20"]
@@ -68,13 +72,14 @@ module-name = "httpware"
 module-root = "src"
 
 [dependency-groups]
+# Floored so `uv sync --resolution lowest-direct` resolves a usable harness, not each name's first release.
 dev = [
-    "pytest",
-    "pytest-cov",
-    "pytest-asyncio",
-    "pytest-repeat",
-    "pytest-benchmark",
-    "hypothesis",
+    "pytest>=8",
+    "pytest-cov>=5",
+    "pytest-asyncio>=0.24",
+    "pytest-repeat>=0.9",
+    "pytest-benchmark>=4",
+    "hypothesis>=6.20",
 ]
 lint = [
     "ruff",