[#1401] Properly forward CONAN_ARGS to cibuildwheel build container

Author: ReeceHumphreys

pyproject.toml

@@ -100,6 +100,10 @@ repair-wheel-command = [
 ]
 manylinux-x86_64-image  = "manylinux_2_28"
 manylinux-aarch64-image = "manylinux_2_28"
+# cibuildwheel runs Linux builds inside a manylinux container so host env vars
+# that toggles MuJoCo/OpNav aren't visible to the build unless explicitly
+# forwarded.
+environment-pass = ["CONAN_ARGS", "CMAKE_C_COMPILER_LAUNCHER", "CMAKE_CXX_COMPILER_LAUNCHER"]
 
 [tool.pytest.ini_options]
 markers = [