Defer latexmk check after skips. (#83)

Author: tobiasraabe

CHANGES.md

@@ -9,6 +9,7 @@ releases are available on [Anaconda.org](https://anaconda.org/conda-forge/pytask
 - {pull}`75` adds rye.
 - {pull}`81` adds support for Python 3.13 and drops support for Python 3.8.
 - {pull}`82` remove setup with tox-uv.
+- {pull}`83` defers latexmk check after the evaluation of skips.
 
 ## 0.4.2 - 2023-11-30
 

src/pytask_latex/execute.py

@@ -9,9 +9,10 @@
 from pytask import hookimpl
 
 
-@hookimpl
+@hookimpl(trylast=True)
 def pytask_execute_task_setup(task: PTask) -> None:
     """Check that latexmk is found on the PATH if a LaTeX task should be executed."""
+    _rich_traceback_omit = True
     if has_mark(task, "latex") and shutil.which("latexmk") is None:
         msg = (
             "latexmk is needed to compile LaTeX documents, but it is not found on "

tests/test_execute.py

@@ -6,6 +6,7 @@
 import pytest
 from pytask import ExitCode
 from pytask import Mark
+from pytask import Skipped
 from pytask import Task
 from pytask import build
 from pytask import cli
@@ -156,7 +157,6 @@ def task_compile_document():
     assert result.exit_code == ExitCode.OK
 
 
-@needs_latexmk
 @skip_on_github_actions_with_win
 @pytest.mark.end_to_end
 def test_raise_error_if_latexmk_is_not_found(tmp_path, monkeypatch):
@@ -190,6 +190,40 @@ def task_compile_document():
     assert isinstance(session.execution_reports[0].exc_info[1], RuntimeError)
 
 
+@skip_on_github_actions_with_win
+@pytest.mark.end_to_end
+def test_skip_even_if_latexmk_is_not_found(tmp_path, monkeypatch):
+    task_source = """
+    from pytask import mark
+
+    @mark.skip(reason="Skip it.")
+    @mark.latex(script="document.tex", document="document.pdf")
+    def task_compile_document():
+        pass
+    """
+    tmp_path.joinpath("task_dummy.py").write_text(textwrap.dedent(task_source))
+
+    latex_source = r"""
+    \documentclass{report}
+    \begin{document}
+    Ein Fuchs muss tun, was ein Fuchs tun muss. Luxus und Ruhm und rulen bis zum
+    Schluss.
+    \end{document}
+    """
+    tmp_path.joinpath("document.tex").write_text(textwrap.dedent(latex_source))
+
+    # Hide latexmk if available.
+    monkeypatch.setattr(
+        "pytask_latex.execute.shutil.which",
+        lambda x: None,  # noqa: ARG005
+    )
+
+    session = build(paths=tmp_path)
+
+    assert session.exit_code == ExitCode.OK
+    assert isinstance(session.execution_reports[0].exc_info[1], Skipped)
+
+
 @needs_latexmk
 @skip_on_github_actions_with_win
 @pytest.mark.end_to_end