Derive the version from git with verri

Use verri's strawberry flavour through hatchling's code version source, so
versions look like 2026.10.21.0: the HEAD commit date plus the number of
earlier commits that day.

Container images build the sdist in a separate stage that has the git
repository, so they get the same version instead of a +vcs.missing one.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.containerignore

@@ -1,8 +1,6 @@
-.git
 **/__pycache__
 **/*.pyc
 .venv
-tests
 **/build
 **/dist
 **/*.egg-info

Containerfile

@@ -35,6 +35,21 @@ RUN yarn install --frozen-lockfile --network-timeout 600000
 RUN yarn build && test -f dist/index.html
 
 
+# Builds peo's sdist from the git repository, because verri derives the version
+# from the git history (see version.py). The unpacked sdist carries that version
+# in PKG-INFO, so the images below can be built without git.
+FROM ${SLIM_BASE_IMAGE} AS sdist
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends git python3-build python3-venv \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY . /src
+RUN python3 -m build --sdist --outdir /dist /src \
+    && mkdir /peo \
+    && tar -xzf /dist/peo-*.tar.gz --strip-components=1 -C /peo
+
+
 FROM ${SLIM_BASE_IMAGE} AS slim
 
 RUN apt-get update \
@@ -45,8 +60,7 @@ RUN apt-get update \
 # notices: see THIRD_PARTY_NOTICES.md.
 COPY container/collect-python-licenses.py /tmp/
 COPY container/licenses/ /tmp/licenses/
-COPY pyproject.toml README.md LICENSE /tmp/peo/
-COPY peo /tmp/peo/peo
+COPY --from=sdist /peo /tmp/peo
 RUN python3 -m venv --system-site-packages /opt/peo/venv \
     && /opt/peo/venv/bin/pip install --no-cache-dir "/tmp/peo[browser]" \
     && /opt/peo/venv/bin/python /tmp/collect-python-licenses.py \
@@ -94,8 +108,7 @@ RUN /opt/pgadmin/bin/python /tmp/collect-python-licenses.py \
         /usr/share/doc/peo/pgadmin-python-licenses /tmp/licenses
 
 # peo itself, using Debian's psycopg and the other dependencies from PyPI.
-COPY pyproject.toml README.md LICENSE /tmp/peo/
-COPY peo /tmp/peo/peo
+COPY --from=sdist /peo /tmp/peo
 RUN python3 -m venv --system-site-packages /opt/peo/venv \
     && /opt/peo/venv/bin/pip install --no-cache-dir "/tmp/peo[browser]" \
     && /opt/peo/venv/bin/python /tmp/collect-python-licenses.py \

peo/__init__.py

@@ -2,4 +2,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 """peo: serves neo4j-browser and translates Bolt/Cypher to PostgreSQL + AGE."""
 
-__version__ = "0.1.0"
+from importlib.metadata import version
+
+__version__ = version("peo")

pyproject.toml

@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 [build-system]
-requires = ["hatchling>=1.27", "hatch-fancy-pypi-readme>=24.1"]
+requires = ["hatchling>=1.27", "hatch-fancy-pypi-readme>=24.1", "verri>=2026.10.11"]
 build-backend = "hatchling.build"
 
 [project]
@@ -31,11 +31,15 @@ Source = "https://git.bartbroe.re/bartbroere/peo"
 [project.scripts]
 peo = "peo.__main__:run"
 
+# The version is derived from the date of the HEAD commit, plus the number of
+# commits made earlier that day, like 2026.10.21.0. See version.py.
 [tool.hatch.version]
-path = "peo/__init__.py"
+source = "code"
+path = "version.py"
+expression = "strawberry()"
 
 [tool.hatch.build.targets.sdist]
-include = ["/peo", "/README.md", "/LICENSE"]
+include = ["/peo", "/README.md", "/LICENSE", "/version.py"]
 
 [tool.hatch.build.targets.wheel]
 packages = ["peo"]

version.py

@@ -0,0 +1,5 @@
+# SPDX-FileCopyrightText: 2026 Bart Broere
+# SPDX-License-Identifier: GPL-3.0-or-later
+"""Build-time version source for hatchling, see [tool.hatch.version]."""
+
+from verri.tasty import strawberry  # noqa: F401