Add poetry to image spec

flytekit/image_spec/default_builder.py

@@ -35,6 +35,31 @@
 """
 )
 
+POETRY_LOCK_TEMPLATE = Template(
+    """\
+RUN --mount=type=cache,sharing=locked,mode=0777,target=/root/.cache/uv,id=uv \
+    --mount=from=uv,source=/uv,target=/usr/bin/uv \
+    uv pip install poetry
+
+ENV POETRY_CACHE_DIR=/tmp/poetry_cache \
+    POETRY_VIRTUALENVS_IN_PROJECT=true
+
+# poetry install does not work running in /, so we move to /root to create the venv
+WORKDIR /root
+
+RUN --mount=type=cache,sharing=locked,mode=0777,target=/tmp/poetry_cache,id=poetry \
+    --mount=type=bind,target=poetry.lock,src=poetry.lock \
+    --mount=type=bind,target=pyproject.toml,src=pyproject.toml \
+    poetry install $PIP_INSTALL_ARGS
+
+WORKDIR /
+
+# Update PATH and UV_PYTHON to point to venv
+ENV PATH="/root/.venv/bin:$$PATH" \
+    UV_PYTHON=/root/.venv/bin/python
+"""
+)
+
 UV_PYTHON_INSTALL_COMMAND_TEMPLATE = Template(
     """\
 RUN --mount=type=cache,sharing=locked,mode=0777,target=/root/.cache/uv,id=uv \
@@ -44,6 +69,7 @@
 """
 )
 
+
 APT_INSTALL_COMMAND_TEMPLATE = Template("""\
 RUN --mount=type=cache,sharing=locked,mode=0777,target=/var/cache/apt,id=apt \
     apt-get update && apt-get install -y --no-install-recommends \
@@ -128,29 +154,33 @@ def _is_flytekit(package: str) -> bool:
     return name == "flytekit"
 
 
-def prepare_uv_lock_command(image_spec: ImageSpec, pip_install_args: List[str], tmp_dir: Path) -> str:
-    # uv sync is experimental, so our uv.lock support is also experimental
-    # the parameters we pass into install args could be different
-    warnings.warn("uv.lock support is experimental", UserWarning)
-
+def _copy_lock_files_into_context(image_spec: ImageSpec, lock_file: str, tmp_dir: Path):
     if image_spec.packages is not None:
-        msg = "Support for uv.lock files and packages is mutually exclusive"
+        msg = f"Support for {lock_file} files and packages is mutually exclusive"
         raise ValueError(msg)
 
-    uv_lock_path = tmp_dir / "uv.lock"
-    shutil.copy2(image_spec.requirements, uv_lock_path)
+    lock_path = tmp_dir / lock_file
+    shutil.copy2(image_spec.requirements, lock_path)
 
-    # uv.lock requires pyproject.toml to be included
+    # lock requires pyproject.toml to be included
     pyproject_toml_path = tmp_dir / "pyproject.toml"
     dir_name = os.path.dirname(image_spec.requirements)
 
     pyproject_toml_src = os.path.join(dir_name, "pyproject.toml")
     if not os.path.exists(pyproject_toml_src):
-        msg = "To use uv.lock, a pyproject.toml must be in the same directory as the lock file"
+        msg = f"To use {lock_file}, a pyproject.toml file must be in the same directory as the lock file"
         raise ValueError(msg)
 
     shutil.copy2(pyproject_toml_src, pyproject_toml_path)
 
+
+def prepare_uv_lock_command(image_spec: ImageSpec, pip_install_args: List[str], tmp_dir: Path) -> str:
+    # uv sync is experimental, so our uv.lock support is also experimental
+    # the parameters we pass into install args could be different
+    warnings.warn("uv.lock support is experimental", UserWarning)
+
+    _copy_lock_files_into_context(image_spec, "uv.lock", tmp_dir)
+
     # --locked: Assert that the `uv.lock` will remain unchanged
     # --no-dev: Omit the development dependency group
     # --no-install-project: Do not install the current project
@@ -160,6 +190,15 @@ def prepare_uv_lock_command(image_spec: ImageSpec, pip_install_args: List[str],
     return UV_LOCK_INSTALL_TEMPLATE.substitute(PIP_INSTALL_ARGS=pip_install_args)
 
 
+def prepare_poetry_lock_command(image_spec: ImageSpec, pip_install_args: List[str], tmp_dir: Path) -> str:
+    _copy_lock_files_into_context(image_spec, "poetry.lock", tmp_dir)
+
+    # --no-root: Do not install the current project
+    pip_install_args.extend(["--no-root"])
+    pip_install_args = " ".join(pip_install_args)
+    return POETRY_LOCK_TEMPLATE.substitute(PIP_INSTALL_ARGS=pip_install_args)
+
+
 def prepare_python_install(image_spec: ImageSpec, tmp_dir: Path) -> str:
     pip_install_args = []
     if image_spec.pip_index:
@@ -174,6 +213,8 @@ def prepare_python_install(image_spec: ImageSpec, tmp_dir: Path) -> str:
         requirement_basename = os.path.basename(image_spec.requirements)
         if requirement_basename == "uv.lock":
             return prepare_uv_lock_command(image_spec, pip_install_args, tmp_dir)
+        elif requirement_basename == "poetry.lock":
+            return prepare_poetry_lock_command(image_spec, pip_install_args, tmp_dir)
 
         # Assume this is a requirements.txt file
         with open(image_spec.requirements) as f:

tests/flytekit/unit/core/image_spec/test_default_builder.py

@@ -251,44 +251,70 @@ def test_create_docker_context_uv_lock(tmp_path):
     ) in dockerfile_content
 
 
+@pytest.mark.parametrize("lock_file", ["uv.lock", "poetry.lock"])
 @pytest.mark.filterwarnings("ignore::UserWarning")
-def test_uv_lock_errors_no_pyproject_toml(monkeypatch, tmp_path):
+def test_lock_errors_no_pyproject_toml(monkeypatch, tmp_path, lock_file):
     run_mock = Mock()
     monkeypatch.setattr("flytekit.image_spec.default_builder.run", run_mock)
 
-    uv_lock_file = tmp_path / "uv.lock"
-    uv_lock_file.write_text("this is a lock file")
+    lock_file_path = tmp_path / lock_file
+    lock_file_path.write_text("this is a lock file")
 
     image_spec = ImageSpec(
         name="FLYTEKIT",
         python_version="3.12",
-        requirements=os.fspath(uv_lock_file),
+        requirements=os.fspath(lock_file_path),
     )
 
     builder = DefaultImageBuilder()
 
-    with pytest.raises(ValueError, match="To use uv.lock"):
+    with pytest.raises(ValueError, match="a pyproject.toml file must be in the same"):
         builder.build_image(image_spec)
 
 
+@pytest.mark.parametrize("lock_file", ["uv.lock", "poetry.lock"])
 @pytest.mark.filterwarnings("ignore::UserWarning")
-@pytest.mark.parametrize("invalid_param", ["packages"])
-def test_uv_lock_error_no_packages(monkeypatch, tmp_path, invalid_param):
+def test_uv_lock_error_no_packages(monkeypatch, tmp_path, lock_file):
     run_mock = Mock()
     monkeypatch.setattr("flytekit.image_spec.default_builder.run", run_mock)
 
-    uv_lock_file = tmp_path / "uv.lock"
-    uv_lock_file.write_text("this is a lock file")
+    lock_file_path = tmp_path / lock_file
+    lock_file_path.write_text("this is a lock file")
 
     image_spec = ImageSpec(
         name="FLYTEKIT",
         python_version="3.12",
-        requirements=os.fspath(uv_lock_file),
+        requirements=os.fspath(lock_file),
         packages=["ruff"],
     )
     builder = DefaultImageBuilder()
 
-    with pytest.raises(ValueError, match="Support for uv.lock files and packages is mutually exclusive"):
+    with pytest.raises(ValueError, match=f"Support for {lock_file} files and packages is mutually exclusive"):
         builder.build_image(image_spec)
 
     run_mock.assert_not_called()
+
+
+def test_create_poetry_lock(tmp_path):
+    docker_context_path = tmp_path / "builder_root"
+    docker_context_path.mkdir()
+
+    poetry_lock = tmp_path / "poetry.lock"
+    poetry_lock.write_text("this is a lock file")
+
+    pyproject_file = tmp_path / "pyproject.toml"
+    pyproject_file.write_text("this is a pyproject.toml file")
+
+    image_spec = ImageSpec(
+        name="FLYTEKIT",
+        python_version="3.12",
+        requirements=os.fspath(poetry_lock),
+    )
+
+    create_docker_context(image_spec, docker_context_path)
+
+    dockerfile_path = docker_context_path / "Dockerfile"
+    assert dockerfile_path.exists()
+    dockerfile_content = dockerfile_path.read_text()
+
+    assert "poetry install --no-root" in dockerfile_content