Split pre-commit into mypy/pylint/rest runners and install with uv

pre-commit took ~119 s as one job (24 s of pip, then every hook env and
every hook in series); Tests took ~56 s (26 s of pip, 7 s of apt-get for an
xvfb the image already ships, 17 s of -v pytest). Same hooks, same flags,
same 100% bar -- just parallel runners, cached uv wheels, xdist workers.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0188kZdx3bb56QM8JFUnbHuM

.github/workflows/pre-commit.yml

@@ -7,27 +7,77 @@ on:
     branches: [main]
 
 jobs:
+  # mypy (~17 s) and pylint (~10 s, plus ~20 s to build its hook env) checked
+  # the whole repo inside one ~2 min job, so each gets its own runner and the
+  # other hooks share a third; the workflow takes as long as the slowest group
+  # rather than the sum.
   pre-commit:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - group: mypy
+            hooks: mypy
+            skip: ""
+          - group: pylint
+            hooks: pylint
+            skip: ""
+          - group: rest
+            hooks: ""
+            skip: mypy,pylint
+    name: pre-commit (${{ matrix.group }})
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.x"
-      - name: Install dependencies
-        run: pip install -r requirements.txt
 
-      # The file-length hook delegates to the shared gate in kuhyx/utils, which
-      # a runner does not have at $HOME/utils. Check it out and point the shim
-      # at it via UTILS_ROOT, or `pre-commit run --all-files` fails on a
-      # missing checker rather than on anything in this repo. `.utils` is in
-      # the gate's own EXCLUDED_DIRS, so it does not lint itself.
-      - name: Check out the shared gate
+      # The file-length, md-naming and dependency-freshness hooks delegate to
+      # the shared gates in kuhyx/utils, which a runner does not have at
+      # $HOME/src/utils. Only the rest group runs them.
+      - name: Check out the shared gates
+        if: matrix.group == 'rest'
         uses: actions/checkout@v4
         with:
           repository: kuhyx/utils
           path: .utils
+      - name: Point the delegates at that checkout
+        if: matrix.group == 'rest'
+        run: echo "UTILS_ROOT=$GITHUB_WORKSPACE/.utils" >> "$GITHUB_ENV"
 
-      - uses: pre-commit/action@v3.0.1
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      # Only rest caches its wheels: its install is the big one, and a shared
+      # key would hold whichever group saved first (the suffix keeps it apart
+      # from the Tests workflow's cache of the same requirements.txt).
+      - uses: astral-sh/setup-uv@v10.2.0
+        with:
+          enable-cache: ${{ matrix.group == 'rest' }}
+          cache-dependency-glob: requirements.txt
+          cache-suffix: pre-commit-${{ matrix.group }}
+
+      # mypy and pylint bring their own hook environments, so they need only
+      # pre-commit. The rest group's language: system patch-targets hook
+      # imports diet_guard and every patched module (requests, gatelock,
+      # crdt_sync, freedays, mcp, pydantic), and dependency-freshness needs
+      # pyyaml and packaging -- so it keeps the full requirements.txt. That
+      # install used to run in the one job, with plain pip, for ~24 s.
+      - name: Install pre-commit and the system hooks' imports
+        run: |
+          if [[ "${{ matrix.group }}" == rest ]]; then
+            uv pip install --system -r requirements.txt
+          else
+            uv pip install --system pre-commit
+          fi
+
+      # One cache per group: a shared key would hold whichever group saved
+      # first, and the others would rebuild their hook envs on every run.
+      - uses: actions/cache@v4
+        with:
+          path: ~/.cache/pre-commit
+          key: pre-commit-${{ matrix.group }}-${{ env.pythonLocation }}-${{ hashFiles('.pre-commit-config.yaml') }}
+
+      - name: pre-commit run (${{ matrix.group }})
         env:
-          UTILS_ROOT: ${{ github.workspace }}/.utils
+          SKIP: ${{ matrix.skip }}
+        run: pre-commit run ${{ matrix.hooks }} --all-files --show-diff-on-failure --color=always

.github/workflows/python-tests.yml

@@ -17,15 +17,36 @@ jobs:
         with:
           python-version: "3.x"
 
+      # uv with a cached wheel store installs requirements.txt (git deps
+      # included) in seconds; plain pip took ~26 s of a ~56 s run.
+      - uses: astral-sh/setup-uv@v10.2.0
+        with:
+          enable-cache: true
+          cache-dependency-glob: requirements.txt
+          cache-suffix: tests
+
       - name: Install dependencies
-        run: pip install -r requirements.txt
+        run: uv pip install --system -r requirements.txt
 
       # The gate's keyboard and layout tests drive real Tk: widget heights and
       # the focus ring come from the font engine, and no mock can answer what
       # they ask. Without a display they do not skip -- they fail, which is how
       # this job stayed red while the tests themselves were fine.
+      # ubuntu-latest already ships xvfb, so the unconditional
+      # `apt-get update && install` spent ~7 s to report "already the newest
+      # version"; it now installs only on an image that lacks it.
       - name: Install a virtual X display
-        run: sudo apt-get update && sudo apt-get install -y xvfb
+        run: |
+          command -v xvfb-run >/dev/null \
+            || { sudo apt-get update && sudo apt-get install -y xvfb; }
 
+      # -n auto spreads the suite over every runner core (pytest-xdist is in
+      # requirements.txt); pytest-cov merges the workers' coverage and the
+      # 100% bar still comes from pyproject's fail_under. -q because -v
+      # printed all ~1050 test ids.
       - name: Run tests with coverage
-        run: xvfb-run -a -s "-screen 0 1600x1200x24" python -m pytest -v
+        run: |
+          xvfb-run -a -s "-screen 0 1600x1200x24" python -m pytest \
+            -n auto \
+            -p no:sugar \
+            -q

app/pubspec.yaml

@@ -2,7 +2,7 @@ name: diet_guard_app
 description: "Companion phone app for diet_guard: log meals on the go."
 publish_to: 'none'
 
-version: 1.0.90+1
+version: 1.0.91+1
 
 environment:
   sdk: ^3.12.2