libmamba fails to build on Fedora with fmt 11.0.1

[opoplawski]

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argument discards qualifiers

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• My problem is not solved with the latest version

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I have this problem with Conda as well, without using Mamba

Describe your issue

The Fedora libmamba package is failing to build with the following:

[ 23%] Building CXX object libmamba/CMakeFiles/libmamba.dir/src/specs/version.cpp.o
cd /builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/redhat-linux-build/libmamba && /usr/lib64/ccache/g++ -DFMT_SHARED -DLIBMAMBA_EXPORTS -DSPDLOG_FMT_EXTERNAL -Dlibmamba_EXPORTS -I/builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/include -I/builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/src -isystem /usr/share -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64 -march=x86-64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -O2 -g -DNDEBUG -fPIC -Wall -Wextra -Wshadow -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Wunused -Woverloaded-virtual -Wpedantic -Wconversion -Wsign-conversion -Wnull-dereference -Wdouble-promotion -Wformat=2 -Wunreachable-code -Wuninitialized -Wmisleading-indentation -Wduplicated-cond -Wduplicated-branches -Wlogical-op -Wuseless-cast -MD -MT libmamba/CMakeFiles/libmamba.dir/src/specs/version.cpp.o -MF CMakeFiles/libmamba.dir/src/specs/version.cpp.o.d -o CMakeFiles/libmamba.dir/src/specs/version.cpp.o -c /builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/src/specs/version.cpp
In file included from /usr/include/fmt/format.h:41,
                 from /builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/include/mamba/specs/version.hpp:15,
                 from /builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/src/specs/version.cpp:15:
/usr/include/fmt/base.h: In instantiation of ‘static void fmt::v11::detail::value<Context>::format_custom_arg(void*, typename Context::parse_context_type&, Context&) [with T = mamba::specs::VersionPartAtom; Formatter = fmt::v11::formatter<mamba::specs::VersionPartAtom>; Context = fmt::v11::context; typename Context::parse_context_type = fmt::v11::basic_format_parse_context<char>]’:
/usr/include/fmt/base.h:1383:19:   required from ‘fmt::v11::detail::value<Context>::value(T&) [with T = const mamba::specs::VersionPartAtom; Context = fmt::v11::context]’
 1383 |     custom.format = format_custom_arg<
      |     ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
 1384 |         value_type, typename Context::template formatter_type<value_type>>;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/fmt/base.h:1647:41:   required from ‘constexpr fmt::v11::detail::value<Context> fmt::v11::detail::make_arg(T&) [with bool PACKED = true; Context = fmt::v11::context; T = const mamba::specs::VersionPartAtom; typename std::enable_if<PACKED, int>::type <anonymous> = 0]’
 1647 |   return {arg_mapper<Context>().map(val)};
      |                                         ^
/usr/include/fmt/base.h:2018:74:   required from ‘constexpr fmt::v11::detail::format_arg_store<Context, NUM_ARGS, 0, DESC> fmt::v11::make_format_args(T& ...) [with Context = context; T = {const mamba::specs::VersionPartAtom}; long unsigned int NUM_ARGS = 1; long unsigned int NUM_NAMED_ARGS = 0; long long unsigned int DESC = 15; typename std::enable_if<(NUM_NAMED_ARGS == 0), int>::type <anonymous> = 0]’
 2018 |   return {{detail::make_arg<NUM_ARGS <= detail::max_packed_args, Context>(
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
 2019 |       args)...}};
      |       ~~~~~                                                               
/usr/include/fmt/format.h:4365:44:   required from ‘std::string fmt::v11::format(format_string<T ...>, T&& ...) [with T = {const mamba::specs::VersionPartAtom&}; std::string = std::__cxx11::basic_string<char>; format_string<T ...> = basic_format_string<char, const mamba::specs::VersionPartAtom&>]’
 4365 |   return vformat(fmt, fmt::make_format_args(args...));
      |                       ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/src/specs/version.cpp:93:27:   required from here
   93 |         return fmt::format("{}", *this);
      |                ~~~~~~~~~~~^~~~~~~~~~~~~
/usr/include/fmt/base.h:1402:29: error: passing ‘const fmt::v11::formatter<mamba::specs::VersionPartAtom>’ as ‘this’ argument discards qualifiers [-fpermissive]
 1402 |     ctx.advance_to(cf.format(*static_cast<qualified_type*>(arg), ctx));
      |                    ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/include/mamba/specs/version.hpp:171:10: note:   in call to ‘auto fmt::v11::formatter<mamba::specs::VersionPartAtom>::format(mamba::specs::VersionPartAtom, FormatContext&) [with FormatContext = fmt::v11::context]’
  171 |     auto format(const ::mamba::specs::VersionPartAtom atom, FormatContext& ctx)
      |          ^~~~~~
/usr/include/fmt/base.h: In instantiation of ‘static void fmt::v11::detail::value<Context>::format_custom_arg(void*, typename Context::parse_context_type&, Context&) [with T = mamba::specs::Version; Formatter = fmt::v11::formatter<mamba::specs::Version>; Context = fmt::v11::context; typename Context::parse_context_type = fmt::v11::basic_format_parse_context<char>]’:
/usr/include/fmt/base.h:1383:19:   required from ‘fmt::v11::detail::value<Context>::value(T&) [with T = const mamba::specs::Version; Context = fmt::v11::context]’
 1383 |     custom.format = format_custom_arg<
      |     ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
 1384 |         value_type, typename Context::template formatter_type<value_type>>;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/fmt/base.h:1647:41:   required from ‘constexpr fmt::v11::detail::value<Context> fmt::v11::detail::make_arg(T&) [with bool PACKED = true; Context = fmt::v11::context; T = const mamba::specs::Version; typename std::enable_if<PACKED, int>::type <anonymous> = 0]’
 1647 |   return {arg_mapper<Context>().map(val)};
      |                                         ^
/usr/include/fmt/base.h:2018:74:   required from ‘constexpr fmt::v11::detail::format_arg_store<Context, NUM_ARGS, 0, DESC> fmt::v11::make_format_args(T& ...) [with Context = context; T = {const mamba::specs::Version}; long unsigned int NUM_ARGS = 1; long unsigned int NUM_NAMED_ARGS = 0; long long unsigned int DESC = 15; typename std::enable_if<(NUM_NAMED_ARGS == 0), int>::type <anonymous> = 0]’
 2018 |   return {{detail::make_arg<NUM_ARGS <= detail::max_packed_args, Context>(
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
 2019 |       args)...}};
      |       ~~~~~                                                               
/usr/include/fmt/format.h:4365:44:   required from ‘std::string fmt::v11::format(format_string<T ...>, T&& ...) [with T = {const mamba::specs::Version&}; std::string = std::__cxx11::basic_string<char>; format_string<T ...> = basic_format_string<char, const mamba::specs::Version&>]’
 4365 |   return vformat(fmt, fmt::make_format_args(args...));
      |                       ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/src/specs/version.cpp:207:27:   required from here
  207 |         return fmt::format("{}", *this);
      |                ~~~~~~~~~~~^~~~~~~~~~~~~
/usr/include/fmt/base.h:1402:29: error: passing ‘const fmt::v11::formatter<mamba::specs::Version>’ as ‘this’ argument discards qualifiers [-fpermissive]
 1402 |     ctx.advance_to(cf.format(*static_cast<qualified_type*>(arg), ctx));
      |                    ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/builddir/build/BUILD/libmamba-1.5.8-build/mamba-libmamba-1.5.8/libmamba/include/mamba/specs/version.hpp:191:10: note:   in call to ‘auto fmt::v11::formatter<mamba::specs::Version>::format(mamba::specs::Version, FormatContext&) [with FormatContext = fmt::v11::context]’
  191 |     auto format(const ::mamba::specs::Version v, FormatContext& ctx)
      |          ^~~~~~
gmake[2]: *** [libmamba/CMakeFiles/libmamba.dir/build.make:337: libmamba/CMakeFiles/libmamba.dir/src/specs/version.cpp.o] Error 1

This started happening when Fedora updated to fmt 11.0.1.

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environment.yml

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~/.condarc

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[jjerphan]

This was addressed for 2.0 recently with #3368 and #3371.

[opoplawski]

Any chance these will be backported to 1.5.X?

[jjerphan]

This is currently not a priority for us, but you should be able to apply the two patches for the Fedora packages' build scripts.

[Hind-M]

Any chance these will be backported to 1.5.X?

Hi @opoplawski!
All efforts are now focused on 2.0, but as soon as it's out and that we have more bandwidth, we are planning to backport all fixes including this one :)