/usr/lib/x86_64-linux-gnu/cmake/Thyra/ is in libtrilinos-thyra-dev 12.10.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/cmake/Thyra/ThyraConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraCore/ThyraCoreConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraCore/ThyraCoreTargets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraCore/ThyraCoreTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraEpetraAdapters/ThyraEpetraAdaptersConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraEpetraAdapters/ThyraEpetraAdaptersTargets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraEpetraAdapters/ThyraEpetraAdaptersTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraEpetraExtAdapters/ThyraEpetraExtAdaptersConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraEpetraExtAdapters/ThyraEpetraExtAdaptersTargets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraEpetraExtAdapters/ThyraEpetraExtAdaptersTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraTpetraAdapters/ThyraTpetraAdaptersConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraTpetraAdapters/ThyraTpetraAdaptersTargets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/ThyraTpetraAdapters/ThyraTpetraAdaptersTargets.cmake