{ nixpkgs, ... }: let inherit (nixpkgs) lib; in lib.mapAttrs (system: platform: lib.systems.elaborate platform) { "x86_64-linux" = { system = "x86_64-linux"; config = "x86_64-unknown-linux-musl"; useLLVM = true; linker = "lld"; gcc.arch = "x86-64-v3"; }; "aarch64-linux" = { system = "aarch64-linux"; config = "aarch64-unknown-linux-musl"; useLLVM = true; linker = "lld"; gcc.arch = "armv8-a"; }; "riscv64-linux" = { system = "riscv64-linux"; config = "riscv64-unknown-linux-gnu"; useLLVM = true; linker = "lld"; gcc.arch = "rv64imacfd"; }; }