create mode 100644 test/standalone/install_headers/build.zig
 create mode 100644 test/standalone/install_headers/check_exists.zig
 create mode 100644 test/standalone/install_headers/include/a.h
 create mode 100644 test/standalone/install_headers/include/ignore_me.txt
 create mode 100644 test/standalone/install_headers/include/sub_dir/b.h
 create mode 100644 test/standalone/install_headers/include/sub_dir/ignore_me.h