Test on alpine

.github/workflows/alpine.yml

@@ -0,0 +1,43 @@
+name: Alpine Python 3.12
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+
+jobs:
+  test-alpine:
+    name: Alpine Python 3.12
+    runs-on: ubuntu-latest
+    container:
+      image: python:3.12-alpine
+    env:
+      PIP_DISABLE_PIP_VERSION_CHECK: "1"
+      PYTHONUNBUFFERED: "1"
+    steps:
+      - name: Install system dependencies
+        run: |
+          apk update
+          apk add --no-cache \
+            bash \
+            curl \
+            git \
+            build-base \
+            postgresql-dev \
+            libffi-dev \
+            openssl-dev \
+            linux-headers \
+            gcompat \
+            tzdata
+
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v6
+
+      - name: Install project
+        run: uv sync --locked --all-extras --dev
+
+      - name: Run tests
+        run: uv run --python 3.12 pytest -vv

src/tinypg/binaries.py

@@ -48,6 +48,7 @@ def __init__(self, cache_dir: Optional[Path] = None):
         # Detect platform
         self.os_name = self._detect_os()
         self.arch = self._detect_arch()
+        self._using_musl = self._detect_musl()
 
     def _detect_os(self) -> str:
         """Detect the operating system."""
@@ -82,9 +83,8 @@ def _get_platform_string(self) -> str:
         """Get the platform string for binary downloads."""
         platform = f"{self.os_name}-{self.arch}"
 
-        # TODO not returning alpine yet for testing
-        # if False and self.os_name == "linux" and self._using_musl:
-        #   return f"{platform}-alpine"
+        if self.os_name == "linux" and self._using_musl:
+            return f"{platform}-alpine"
 
         return platform
 
@@ -94,7 +94,11 @@ def _detect_musl(self) -> bool:
             return False
 
         libc, _ = platform.libc_ver()
-        if libc and libc.lower().startswith("musl"):
+        force_glibc = bool(os.environ.get("TINYPG_GLIBC"))
+        if libc and libc.lower().startswith("musl") and not force_glibc:
+            # Will use a musl build unless TINYPG_GLIBC=1
+            # tinypg glibc binaries works on alpine (extensions as well)
+            # with gcompat
             return True
 
         if Path("/etc/alpine-release").exists():