Unable to set up a C++ dev environment because of conflicting stdlibs

[waffle8946]

Mind updating with the exact shell you’re using now?

Also for the compile_commands.json bit, see

Get clangd to find standard headers in nix-shell

I seem to have found a solution to the cmake-failing-to-find-standard-C+±headers problem. Firstly, adding set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE INTERNAL "") to my CMakeLists.txt removes the need to specify -DCMAKE_EXPORT_COMPILE_COMMANDS=1 on the cmake CLI. Secondly, adding if(CMAKE_EXPORT_COMPILE_COMMANDS) set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES}) endif() seems to make the cmake-generated compile_commands.json give clangd the requ…