ENH: determine jupyter and notebooks extras (#444)

src/compwa_policy/check_dev_files/binder.py

@@ -23,35 +23,12 @@
 
 def main(python_version: PythonVersion, apt_packages: list[str]) -> None:
     with Executor() as do:
-        do(_check_optional_dependencies)
         do(_update_apt_txt, apt_packages)
         do(_update_post_build)
         do(_make_executable, CONFIG_PATH.binder / "postBuild")
         do(_update_runtime_txt, python_version)
 
 
-def _check_optional_dependencies() -> None:
-    required_for_binder = "This is required for Binder."
-    if not CONFIG_PATH.pyproject.exists():
-        msg = f"{CONFIG_PATH.pyproject} does not exist. {required_for_binder}"
-        raise PrecommitError(msg)
-    pyproject = Pyproject.load()
-    table_key = "project.optional-dependencies"
-    if not pyproject.has_table(table_key):
-        msg = f"Missing [{table_key}] in {CONFIG_PATH.pyproject}. {required_for_binder}"
-        raise PrecommitError
-    optional_dependencies = pyproject.get_table(table_key)
-    optional_dependency_sections = set(optional_dependencies)
-    expected_sections = {"jupyter", "notebooks"}
-    missing_sections = expected_sections - optional_dependency_sections
-    if missing_sections:
-        msg = (
-            f"Missing sections in [{table_key}]: {', '.join(sorted(missing_sections))}"
-            f". {required_for_binder}"
-        )
-        raise PrecommitError(msg)
-
-
 def _update_apt_txt(apt_packages: list[str]) -> None:
     apt_txt = CONFIG_PATH.binder / "apt.txt"
     if not apt_packages:
@@ -74,21 +51,26 @@ def _update_post_build() -> None:
         curl -LsSf https://astral.sh/uv/install.sh | sh
         source $HOME/.cargo/env
     """).strip()
+
+    notebook_extras = __get_notebook_extras()
     if "uv.lock" in set(git_ls_files(untracked=True)):
+        expected_content += "\nuv export \\"
+        for extra in notebook_extras:
+            expected_content += f"\n  --extra {extra} \\"
         expected_content += dedent(R"""
-            uv export \
-              --extra jupyter \
-              --extra notebooks \
               > requirements.txt
             uv pip install \
               --requirement requirements.txt \
               --system
             uv cache clean
         """)
     else:
-        expected_content += dedent(R"""
+        package = "."
+        if notebook_extras:
+            package = f"'.[{','.join(notebook_extras)}]'"
+        expected_content += dedent(Rf"""
             uv pip install \
-              --editable '.[jupyter,notebooks]' \
+              --editable {package} \
               --no-cache \
               --system
         """)
@@ -98,6 +80,18 @@ def _update_post_build() -> None:
     )
 
 
+def __get_notebook_extras() -> list[str]:
+    if not CONFIG_PATH.pyproject.exists():
+        return []
+    pyproject = Pyproject.load()
+    table_key = "project.optional-dependencies"
+    if not pyproject.has_table(table_key):
+        return []
+    optional_dependencies = pyproject.get_table(table_key)
+    allowed_sections = {"jupyter", "notebooks"}
+    return sorted(allowed_sections & set(optional_dependencies))
+
+
 def _make_executable(path: Path) -> None:
     if os.access(path, os.X_OK):
         return