From e8d136621c40154eedd35012a0e8a09d29c87a41 Mon Sep 17 00:00:00 2001
From: Jonas Leitner <jonas.leitner1@gmx.de>
Date: Wed, 8 Apr 2026 14:11:50 +0200
Subject: [PATCH] add target to install build requirements for cpptests

---
 .github/workflows/ci.yaml | 4 +++-
 pyproject.toml            | 6 ++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5859d8f0..16881f2d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -68,7 +68,9 @@ jobs:
         run: |
           python -m pytest --allocator=libxm -k "TestFunctionality and h2o_sto3g"
       - name: Run C++ tests
-        run: python setup.py cpptest -v
+        run: |
+          python -m pip install --user .[cpptest]
+          python setup.py cpptest -v
       # Documentation build
       - name: Dependencies for documentation
         run: python -m pip install --user .[build_docs]
diff --git a/pyproject.toml b/pyproject.toml
index dcf2af0a..65dd8676 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,6 +44,12 @@ dependencies = [
 
 [project.optional-dependencies]
 tests = ["pytest", "pytest-cov", "pandas >= 0.25.0"]
+# building the tests requires the same dependencies as building libadcc
+# since we explicity call setup.py
+cpptest = [
+	"setuptools >= 77.0",
+	"pybind11 >= 2.6"
+]
 build_docs = [
 	"sphinx>=2", "breathe", "sphinxcontrib-bibtex",
 	"sphinx-automodapi", "sphinx-rtd-theme"