Fix psycopg install

docker/alpine.Dockerfile

@@ -23,7 +23,7 @@ ADD https://astral.sh/uv/0.8.13/install.sh /uv-installer.sh
 RUN chmod +x /uv-installer.sh && /uv-installer.sh
 # install python dependencies
 COPY pyproject.toml uv.lock ./
-RUN /root/.local/bin/uv sync --no-dev
+RUN /root/.local/bin/uv sync --no-dev --group postgres
 
 
 FROM build-deps AS compile-icu

docker/default.Dockerfile

@@ -25,7 +25,7 @@ ADD https://astral.sh/uv/0.8.13/install.sh /uv-installer.sh
 RUN chmod +x /uv-installer.sh && /uv-installer.sh
 # install python dependencies
 COPY pyproject.toml uv.lock ./
-RUN /root/.local/bin/uv sync --no-dev
+RUN /root/.local/bin/uv sync --no-dev --group postgres
 
 
 FROM build-deps AS compile-icu

pyproject.toml

@@ -15,7 +15,6 @@ dependencies = [
     "huey>=2.5.1",
     "markdown>=3.7",
     "mozilla-django-oidc>=4.0.1",
-    "psycopg[binary]>=3.2.9",
     "python-dateutil>=2.9.0.post0",
     "requests>=2.32.4",
     "supervisor>=4.2.5",
@@ -29,10 +28,21 @@ dev = [
     "coverage>=7.10.4",
     "django-debug-toolbar>=6.0.0",
     "playwright>=1.54.0",
+    "psycopg[binary]>=3.2.9",
     "pytest>=8.4.1",
     "pytest-django>=4.11.1",
     "pytest-xdist>=3.8.0",
 ]
+# For PostgreSQL support, use the binary release for development so that not
+# everyone needs to build from source. For production, use a separate dependency
+# group that builds the driver from source. uv also needs to build it from
+# source to update the lockfile, which requires libpq. On macOS:
+# - brew install libpq
+# - export PATH="/opt/homebrew/opt/libpq/bin:$PATH"
+# - uv add --group postgres psycopg[c]
+postgres = [
+    "psycopg[c]>=3.2.9",
+]
 
 [tool.uv]
 # Prefer system Python for now, less complications when copying the venv in the Docker build

uv.lock

@@ -363,7 +363,6 @@ dependencies = [
     { name = "huey" },
     { name = "markdown" },
     { name = "mozilla-django-oidc" },
-    { name = "psycopg", extra = ["binary"] },
     { name = "python-dateutil" },
     { name = "requests" },
     { name = "supervisor" },
@@ -377,10 +376,14 @@ dev = [
     { name = "coverage" },
     { name = "django-debug-toolbar" },
     { name = "playwright" },
+    { name = "psycopg", extra = ["binary"] },
     { name = "pytest" },
     { name = "pytest-django" },
     { name = "pytest-xdist" },
 ]
+postgres = [
+    { name = "psycopg", extra = ["c"] },
+]
 
 [package.metadata]
 requires-dist = [
@@ -394,7 +397,6 @@ requires-dist = [
     { name = "huey", specifier = ">=2.5.1" },
     { name = "markdown", specifier = ">=3.7" },
     { name = "mozilla-django-oidc", specifier = ">=4.0.1" },
-    { name = "psycopg", extras = ["binary"], specifier = ">=3.2.9" },
     { name = "python-dateutil", specifier = ">=2.9.0.post0" },
     { name = "requests", specifier = ">=2.32.4" },
     { name = "supervisor", specifier = ">=4.2.5" },
@@ -408,10 +410,12 @@ dev = [
     { name = "coverage", specifier = ">=7.10.4" },
     { name = "django-debug-toolbar", specifier = ">=6.0.0" },
     { name = "playwright", specifier = ">=1.54.0" },
+    { name = "psycopg", extras = ["binary"], specifier = ">=3.2.9" },
     { name = "pytest", specifier = ">=8.4.1" },
     { name = "pytest-django", specifier = ">=4.11.1" },
     { name = "pytest-xdist", specifier = ">=3.8.0" },
 ]
+postgres = [{ name = "psycopg", extras = ["c"], specifier = ">=3.2.9" }]
 
 [[package]]
 name = "markdown"
@@ -517,6 +521,9 @@ wheels = [
 binary = [
     { name = "psycopg-binary", marker = "implementation_name != 'pypy'" },
 ]
+c = [
+    { name = "psycopg-c", marker = "implementation_name != 'pypy'" },
+]
 
 [[package]]
 name = "psycopg-binary"
@@ -536,6 +543,12 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/7b/1d/bf54cfec79377929da600c16114f0da77a5f1670f45e0c3af9fcd36879bc/psycopg_binary-3.2.9-cp313-cp313-win_amd64.whl", hash = "sha256:2290bc146a1b6a9730350f695e8b670e1d1feb8446597bed0bbe7c3c30e0abcb", size = 2928009, upload-time = "2025-05-13T16:08:53.67Z" },
 ]
 
+[[package]]
+name = "psycopg-c"
+version = "3.2.9"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/83/7f/6147cb842081b0b32692bf5a0fdf58e9ac95418ebac1184d4431ec44b85f/psycopg_c-3.2.9.tar.gz", hash = "sha256:8c9f654f20c6c56bddc4543a3caab236741ee94b6732ab7090b95605502210e2", size = 609538, upload-time = "2025-05-13T16:11:19.856Z" }
+
 [[package]]
 name = "pycparser"
 version = "2.22"