Port to uv

Author: pamelafox

.github/workflows/app-tests.yaml

@@ -24,12 +24,6 @@ jobs:
   test-package:
     name: Test ${{ matrix.os }} Python ${{ matrix.python_version }}
     runs-on: ${{ matrix.os }}
-    env:
-      POSTGRES_HOST: localhost
-      POSTGRES_USERNAME: postgres
-      POSTGRES_PASSWORD: root
-      POSTGRES_DATABASE: postgres
-      POSTGRES_SSL: disable
     strategy:
       fail-fast: false
       matrix:
@@ -40,6 +34,13 @@ jobs:
         exclude:
           - os: macos-latest-xlarge
             python_version: "3.10"
+    env:
+      UV_SYSTEM_PYTHON: 1
+      POSTGRES_HOST: localhost
+      POSTGRES_USERNAME: postgres
+      POSTGRES_PASSWORD: root
+      POSTGRES_DATABASE: postgres
+      POSTGRES_SSL: disable
     steps:
         - uses: actions/checkout@v4
 
@@ -74,13 +75,20 @@ jobs:
             python-version: ${{ matrix.python_version }}
             architecture: x64
 
+        - name: Install uv
+          uses: astral-sh/setup-uv@v3
+          with:
+            enable-cache: true
+            version: "0.4.20"
+            cache-dependency-glob: "requirements**.txt"
+
         - name: Install dependencies
           run: |
-            python -m pip install -r requirements-dev.txt
+            uv pip install -r requirements-dev.txt
 
         - name: Install app as editable app
           run: |
-            python -m pip install -e src/backend
+            uv pip install -e src/backend
 
         - name: Setup local database with seed data
           run: |