Problem: nix builds are broken on aarch64-darwin

[trevorbernard]

No description provided.

[jhult]

This is the error I get on an Apple M1:

Undefined symbols for architecture arm64:
   "___cxa_end_catch", referenced from:
           std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char>>::overflow(int) in liblibspeedb_sys-2abd140cc78f8689.rlib(perf_context.o)
           std::__1::basic_ostream<char, std::__1::char_traits<char>>& std::__1::__put_character_sequence[abi:v160006]<char, std::__1::char_traits<char>>(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, char const*, unsigned long) in liblibspeedb_sys-2abd140cc78f8689.rlib(perf_context.o)

I wonder if this could be related.

[trevorbernard]

This is the error I get on an Apple M1:

Undefined symbols for architecture arm64:
   "___cxa_end_catch", referenced from:
           std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char>>::overflow(int) in liblibspeedb_sys-2abd140cc78f8689.rlib(perf_context.o)
           std::__1::basic_ostream<char, std::__1::char_traits<char>>& std::__1::__put_character_sequence[abi:v160006]<char, std::__1::char_traits<char>>(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, char const*, unsigned long) in liblibspeedb_sys-2abd140cc78f8689.rlib(perf_context.o)

I wonder if this could be related.

This is a cmake cross-compilation bug in speedb. The PR linked should resolve your issue

[trevorbernard]

If you wanted to learn why it's broke on aarch64-darwin, read the following issue which thoroughly describes the problem: (NixOS/nixpkgs#166205). This also explains why our previous flake worked under llvmPackages_11. TIL