Issues with QLever as Embedded Database

[raphael10-collab]

I created a brand new public github repo to test QLever as Embedded Database:

CppPrjWithQlever : https://github.com/raphael10-collab/CppPrjWithQLever

(base) raphy@raohy:~/CppPrjWithQLever$ cmake -B build -Wno-dev
-- The C compiler identification is GNU 13.3.0
-- The CXX compiler identification is GNU 13.3.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
Cloning into 'qlever-src'...
HEAD is now at 228a5ce8 Merge branch 'lazy-minus' into lazy-exists-join-and-minus
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found ICU: /usr/local/include (found suitable version "72.1", minimum required is "60") found components: uc i18n
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.8.1")
-- Checking for module 'jemalloc'
--   Found jemalloc, version 0.0.0_0
-- Found OpenSSL: /usr/lib/x86_64-linux-gnu/libcrypto.so (found version "3.0.13")
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX17
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX17 - Success
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX20
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX20 - Success
-- Performing Test COMPILER_SUPPORTS_MARCH_NATIVE
-- Performing Test COMPILER_SUPPORTS_MARCH_NATIVE - Success
-- The following REQUIRED packages have been found:

 * ICU (required version >= 60)
 * boost_iostreams (required version == 1.83.0)
 * boost_program_options (required version == 1.83.0)
 * boost_headers (required version == 1.83.0)
 * boost_url (required version == 1.83.0)
 * Boost (required version >= 1.81)
 * OpenSSL
 * Threads

-- The following features have been disabled:

 * SHARED_LIBS, builds shared libraries instead of static.
 * PYTHON, provides python interface to S2
 * S2_USE_SYSTEM_INCLUDES, Silence warnings in s2 headers by marking them as SYSTEM includes.

-- Using the multi-header code from /home/raphy/CppPrjWithQLever/build/_deps/nlohmann-json-src/include/
CMake Warning at build/_deps/antlr-src/runtime/Cpp/CMakeLists.txt:12 (message):
  Build type not set, falling back to Release mode.

   To specify build type use:
   -DCMAKE_BUILD_TYPE=<mode> where <mode> is Debug or Release.


-- Building without demo. To enable demo build use: -DWITH_DEMO=True
-- Found Git: /usr/bin/git (found version "2.43.0")
-- [range-v3]: C++ std=2a
-- Performing Test RANGES_HAS_CXXSTD
-- Performing Test RANGES_HAS_CXXSTD - Success
-- Performing Test RANGES_HAS_WALL
-- Performing Test RANGES_HAS_WALL - Success
-- Performing Test RANGES_HAS_WEXTRA
-- Performing Test RANGES_HAS_WEXTRA - Success
-- Performing Test RANGES_HAS_WERROR
-- Performing Test RANGES_HAS_WERROR - Success
-- Performing Test RANGES_HAS_FDIAGNOSTIC_SHOW_TEMPLATE_TREE
-- Performing Test RANGES_HAS_FDIAGNOSTIC_SHOW_TEMPLATE_TREE - Success
-- Performing Test RANGES_HAS_FTEMPLATE_BACKTRACE_LIMIT
-- Performing Test RANGES_HAS_FTEMPLATE_BACKTRACE_LIMIT - Success
-- Performing Test RANGES_HAS_FMACRO_BACKTRACE_LIMIT
-- Performing Test RANGES_HAS_FMACRO_BACKTRACE_LIMIT - Failed
-- Performing Test RANGES_HAS_OMIT_FRAME_POINTER
-- Performing Test RANGES_HAS_OMIT_FRAME_POINTER - Success
-- Performing Test RANGES_HAS_OFAST
-- Performing Test RANGES_HAS_OFAST - Success
-- Performing Test RANGES_HAS_STRICT_ALIASING
-- Performing Test RANGES_HAS_STRICT_ALIASING - Success
-- Performing Test RANGES_HAS_STRICT_VTABLE_POINTERS
-- Performing Test RANGES_HAS_STRICT_VTABLE_POINTERS - Failed
-- Performing Test RANGES_HAS_FAST_MATH
-- Performing Test RANGES_HAS_FAST_MATH - Success
-- Performing Test RANGES_HAS_VECTORIZE
-- Performing Test RANGES_HAS_VECTORIZE - Failed
-- Performing Test RANGES_HAS_SIZED_DEALLOCATION
-- Performing Test RANGES_HAS_SIZED_DEALLOCATION - Success
-- Performing Test RANGES_HAS_MARCH_NATIVE
-- Performing Test RANGES_HAS_MARCH_NATIVE - Success
-- Performing Test RANGES_HAS_MTUNE_NATIVE
-- Performing Test RANGES_HAS_MTUNE_NATIVE - Success
-- Performing Test RANGE_V3_ALIGNED_NEW_PROBE
-- Performing Test RANGE_V3_ALIGNED_NEW_PROBE - Success
-- Performing Test RANGE_V3_HAS_FCONCEPTS
-- Performing Test RANGE_V3_HAS_FCONCEPTS - Success
-- Found BZip2: /usr/lib/x86_64-linux-gnu/libbz2.so (found version "1.0.8")
-- Looking for BZ2_bzCompressInit
-- Looking for BZ2_bzCompressInit - found
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.3")
-- ---
-- CXX_FLAGS are :   -Wall -Wextra 
-- CXX_FLAGS_RELEASE are : -O3 -DNDEBUG -O3
-- CXX_FLAGS_DEBUG are : -g
-- IMPORTANT: Make sure you have selected the desired CMAKE_BUILD_TYPE
-- CMAKE_BUILD_TYPE is Release
-- ---
-- The tests are split over multiple binaries
-- Configuring done (35.1s)
-- Generating done (1.8s)
-- Build files have been written to: /home/raphy/CppPrjWithQLever/build
(base) raphy@raohy:~/CppPrjWithQLever$ 

In the compilation phase I get this kind of errors:

(base) raphy@raohy:~/CppPrjWithQLever$ cmake --build build/
[  0%] Building CXX object CMakeFiles/CppPrjWithQLever.dir/src/LibQLeverExample.cpp.o
In file included from /home/raphy/CppPrjWithQLever/./src/util/MemorySize/MemorySize.h:19,
                 from /home/raphy/CppPrjWithQLever/src/libqlever/Qlever.h:10,
                 from /home/raphy/CppPrjWithQLever/src/LibQLeverExample.cpp:9:
/home/raphy/CppPrjWithQLever/./src/backports/algorithm.h:48:22: error: ‘views’ is not a namespace-name
   48 | using namespace std::views;
      |                      ^~~~~
In file included from /home/raphy/CppPrjWithQLever/./src/util/MemorySize/MemorySize.h:25:
/home/raphy/CppPrjWithQLever/./src/util/ConstexprUtils.h: In function ‘constexpr std::array<_Tp, _Nm> ad_utility::integerToArray(Int, Int)’:
/home/raphy/CppPrjWithQLever/./src/util/ConstexprUtils.h:216:36: error: ‘reverse’ is not a member of ‘ql::views’
  216 |   for (auto& el : res | ql::views::reverse) {
      |                                    ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/util/ConstexprUtils.h:216:36: note: suggested alternatives:
In file included from /usr/include/c++/13/algorithm:73,
                 from /home/raphy/CppPrjWithQLever/./src/absl/strings/str_cat.h:90,
                 from /home/raphy/CppPrjWithQLever/./src/util/MemorySize/MemorySize.h:11:
/usr/include/c++/13/pstl/glue_algorithm_defs.h:249:1: note:   ‘std::reverse’
  249 | reverse(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last);
      | ^~~~~~~
In file included from /home/raphy/CppPrjWithQLever/./src/range/v3/action/action.hpp:19,
                 from /home/raphy/CppPrjWithQLever/./src/range/v3/action.hpp:17,
                 from /home/raphy/CppPrjWithQLever/./src/range/v3/all.hpp:17,
                 from /home/raphy/CppPrjWithQLever/./src/backports/algorithm.h:10:
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:3000:11: note:   ‘meta::reverse’
 3000 |     using reverse = _t<detail::reverse_<L>>;
      |           ^~~~~~~
In file included from /home/raphy/CppPrjWithQLever/./src/range/v3/range_fwd.hpp:25,
                 from /home/raphy/CppPrjWithQLever/./src/range/v3/action/action.hpp:21:
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/reverse.hpp:80:21: note:   ‘ranges::reverse’
   80 |     RANGES_FUNC_END(reverse)
      |                     ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/reverse.hpp:80:5: note: in expansion of macro ‘RANGES_FUNC_END’
   80 |     RANGES_FUNC_END(reverse)
      |     ^~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:63:
/usr/include/c++/13/bits/ranges_algo.h:1292:33: note:   ‘std::ranges::reverse’
 1292 |   inline constexpr __reverse_fn reverse{};
      |                                 ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:3007:15: note:   ‘meta::lazy::reverse’
 3007 |         using reverse = defer<reverse, L>;
      |               ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/reverse.hpp:166:58: note:   ‘ranges::views::reverse’
  166 |         RANGES_INLINE_VARIABLE(view_closure<reverse_fn>, reverse)
      |                                                          ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/action/reverse.hpp:48:60: note:   ‘ranges::actions::reverse’
   48 |         RANGES_INLINE_VARIABLE(action_closure<reverse_fn>, reverse)
      |                                                            ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/reverse.hpp:80:21: note:   ‘ranges::reverse’
   80 |     RANGES_FUNC_END(reverse)
      |                     ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/reverse.hpp:80:5: note: in expansion of macro ‘RANGES_FUNC_END’
   80 |     RANGES_FUNC_END(reverse)
      |     ^~~~~~~~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/reverse.hpp:166:58: note:   ‘ranges::views::reverse’
  166 |         RANGES_INLINE_VARIABLE(view_closure<reverse_fn>, reverse)
      |                                                          ^~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
In file included from /home/raphy/CppPrjWithQLever/./src/engine/Result.h:15,
                 from /home/raphy/CppPrjWithQLever/./src/engine/QueryExecutionContext.h:14,
                 from /home/raphy/CppPrjWithQLever/./src/engine/Operation.h:14,
                 from /home/raphy/CppPrjWithQLever/./src/engine/ExplicitIdTableOperation.h:11,
                 from /home/raphy/CppPrjWithQLever/./src/engine/NamedResultCache.h:10,
                 from /home/raphy/CppPrjWithQLever/src/libqlever/Qlever.h:17:
/home/raphy/CppPrjWithQLever/./src/engine/LocalVocab.h: In member function ‘void LocalVocab::mergeWith(const R&)’:
/home/raphy/CppPrjWithQLever/./src/engine/LocalVocab.h:122:22: error: ‘filter’ has not been declared in ‘ql::views’
  122 |     using ql::views::filter;
      |                      ^~~~~~
/home/raphy/CppPrjWithQLever/./src/engine/LocalVocab.h:134:39: error: there are no arguments to ‘filter’ that depend on a template parameter, so a declaration of ‘filter’ must be available [-fpermissive]
  134 |     for (const auto& vocab : vocabs | filter(std::not_fn(&LocalVocab::empty))) {
      |                                       ^~~~~~
/home/raphy/CppPrjWithQLever/./src/engine/LocalVocab.h:134:39: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/home/raphy/CppPrjWithQLever/./src/engine/LocalVocab.h:146:20: error: ‘transform’ is not a member of ‘ql::views’
  146 |         ql::views::transform([](const LocalVocab& vocab) -> const auto& {
      |                    ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/engine/LocalVocab.h:146:20: note: suggested alternatives:
/usr/include/c++/13/pstl/glue_algorithm_defs.h:162:1: note:   ‘std::transform’
  162 | transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
      | ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:1854:11: note:   ‘meta::transform’
 1854 |     using transform = _t<detail::transform_<Args...>>;
      |           ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/transform.hpp:207:21: note:   ‘ranges::transform’
  207 |     RANGES_FUNC_END(transform)
      |                     ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/transform.hpp:207:5: note: in expansion of macro ‘RANGES_FUNC_END’
  207 |     RANGES_FUNC_END(transform)
      |     ^~~~~~~~~~~~~~~
/usr/include/c++/13/bits/ranges_algo.h:772:35: note:   ‘std::ranges::transform’
  772 |   inline constexpr __transform_fn transform{};
      |                                   ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:1865:15: note:   ‘meta::lazy::transform’
 1865 |         using transform = defer<transform, Args...>;
      |               ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/transform.hpp:594:46: note:   ‘ranges::views::transform’
  594 |         RANGES_INLINE_VARIABLE(transform_fn, transform)
      |                                              ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/action/transform.hpp:58:46: note:   ‘ranges::actions::transform’
   58 |         RANGES_INLINE_VARIABLE(transform_fn, transform)
      |                                              ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/transform.hpp:207:21: note:   ‘ranges::transform’
  207 |     RANGES_FUNC_END(transform)
      |                     ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/algorithm/transform.hpp:207:5: note: in expansion of macro ‘RANGES_FUNC_END’
  207 |     RANGES_FUNC_END(transform)
      |     ^~~~~~~~~~~~~~~
In file included from /usr/include/boost/hana/basic_tuple.hpp:27,
                 from /usr/include/boost/hana/tuple.hpp:16,
                 from /home/raphy/CppPrjWithQLever/./src/util/ConstexprMap.h:8,
                 from /home/raphy/CppPrjWithQLever/./src/util/MemorySize/MemorySize.h:24:
/usr/include/boost/hana/fwd/transform.hpp:53:54: note:   ‘boost::hana::transform’
   53 |     BOOST_HANA_INLINE_VARIABLE constexpr transform_t transform{};
      |                                                      ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/transform.hpp:594:46: note:   ‘ranges::views::transform’
  594 |         RANGES_INLINE_VARIABLE(transform_fn, transform)
      |                                              ^~~~~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
In file included from /home/raphy/CppPrjWithQLever/./src/engine/idTable/IdTable.h:28,
                 from /home/raphy/CppPrjWithQLever/./src/engine/Result.h:17:
/home/raphy/CppPrjWithQLever/./src/util/Views.h: In function ‘ad_utility::InputRangeTypeErased<BlockType> ad_utility::uniqueBlockView(SortedBlockView)’:
/home/raphy/CppPrjWithQLever/./src/util/Views.h:124:25: error: ‘filter’ is not a member of ‘ql::views’
  124 |     decltype(ql::views::filter(view_,
      |                         ^~~~~~
/home/raphy/CppPrjWithQLever/./src/util/Views.h:124:25: note: suggested alternatives:
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:2820:11: note:   ‘meta::filter’
 2820 |     using filter = join<transform<L, detail::filter_<Pred>>>;
      |           ^~~~~~
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:2827:15: note:   ‘meta::lazy::filter’
 2827 |         using filter = defer<filter, L, Fn>;
      |               ^~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/filter.hpp:150:43: note:   ‘ranges::views::filter’
  150 |         RANGES_INLINE_VARIABLE(filter_fn, filter)
      |                                           ^~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/filter.hpp:157:68: note:   ‘ranges::cpp20::views::filter’
  157 |             RANGES_INLINE_VARIABLE(ranges::views::cpp20_filter_fn, filter)
      |                                                                    ^~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/util/Views.h:124:25: error: ‘filter’ is not a member of ‘ql::views’
  124 |     decltype(ql::views::filter(view_,
      |                         ^~~~~~
/home/raphy/CppPrjWithQLever/./src/util/Views.h:124:25: note: suggested alternatives:
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:2820:11: note:   ‘meta::filter’
 2820 |     using filter = join<transform<L, detail::filter_<Pred>>>;
      |           ^~~~~~
/home/raphy/CppPrjWithQLever/./src/meta/meta.hpp:2827:15: note:   ‘meta::lazy::filter’
 2827 |         using filter = defer<filter, L, Fn>;
      |               ^~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/filter.hpp:150:43: note:   ‘ranges::views::filter’
  150 |         RANGES_INLINE_VARIABLE(filter_fn, filter)
      |                                           ^~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/view/filter.hpp:157:68: note:   ‘ranges::cpp20::views::filter’
  157 |             RANGES_INLINE_VARIABLE(ranges::views::cpp20_filter_fn, filter)
      |                                                                    ^~~~~~
/home/raphy/CppPrjWithQLever/./src/range/v3/detail/config.hpp:579:27: note: in definition of macro ‘RANGES_INLINE_VARIABLE’
  579 |     inline constexpr type name{};          \
      |                           ^~~~
/home/raphy/CppPrjWithQLever/./src/util/Views.h:126:31: error: no match for call to ‘(const std::ranges::__cust_access::_Begin) (int&)’
  126 |     decltype(ql::ranges::begin(nonEmptyView_)) iter_;
      |              ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/string_view:48,
                 from /usr/include/c++/13/bits/basic_string.h:47,
                 from /usr/include/c++/13/string:54,
                 from /usr/include/c++/13/bits/locale_classes.h:40,
                 from /usr/include/c++/13/bits/ios_base.h:41,
                 from /usr/include/c++/13/ios:44,
                 from /usr/include/c++/13/ostream:40,
                 from /usr/include/c++/13/iostream:41,
                 from /home/raphy/CppPrjWithQLever/src/LibQLeverExample.cpp:7:
/usr/include/c++/13/bits/ranges_base.h:115:9: note: candidate: ‘template<class _Tp>  requires (__maybe_borrowed_range<_Tp>) && ((is_array_v<typename std::remove_reference<_Tp>::type>) || (__member_begin<_Tp>) || (__adl_begin<_Tp>)) constexpr auto std::ranges::__cust_access::_Begin::operator()(_Tp&&) const’
  115 |         operator()[[nodiscard]](_Tp&& __t) const noexcept(_S_noexcept<_Tp&>())
      |         ^~~~~~~~
/usr/include/c++/13/bits/ranges_base.h:115:9: note:   template argument deduction/substitution failed:
/usr/include/c++/13/bits/ranges_base.h:115:9: note: constraints not satisfied
/home/raphy/CppPrjWithQLever/./src/util/Views.h: In substitution of ‘template<class _Tp>  requires (__maybe_borrowed_range<_Tp>) && ((is_array_v<typename std::remove_reference<_Tp>::type>) || (__member_begin<_Tp>) || (__adl_begin<_Tp>)) constexpr auto std::ranges::__cust_access::_Begin::operator()(_Tp&&) const [with _Tp = int&]’:
/home/raphy/CppPrjWithQLever/./src/util/Views.h:126:31:   required from here
/usr/include/c++/13/bits/ranges_base.h:115:2:   required by the constraints of ‘template<class _Tp>  requires (__maybe_borrowed_range<_Tp>) && ((is_array_v<typename std::remove_reference<_Tp>::type>) || (__member_begin<_Tp>) || (__adl_begin<_Tp>)) constexpr auto std::ranges::__cust_access::_Begin::operator()(_Tp&&) const’
/usr/include/c++/13/bits/ranges_base.h:113:11: note: no operand of the disjunction is satisfied
  112 |         requires is_array_v<remove_reference_t<_Tp>> || __member_begin<_Tp>
      |                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  113 |           || __adl_begin<_Tp>
      |           ^~~~~~~~~~~~~~~~~~~
cc1plus: note: set ‘-fconcepts-diagnostics-depth=’ to at least 2 for more detail
/home/raphy/CppPrjWithQLever/./src/util/Views.h:126:31: error: no match for call to ‘(const std::ranges::__cust_access::_Begin) (int&)’
  126 |     decltype(ql::ranges::begin(nonEmptyView_)) iter_;

What am I missing and/or doing wrong?
How to make it work?