Solved Update here.
I stumbled on a youtube video of “No Boilerplate” That hinted about running binarys
I then added in configuration.nix file
programs.nix-ld.enable = true;
programs.nix-ld.libraries = with pkgs; [
glibc
gcc.cc.lib
];
Rebooted the PC,
Then tried again with “foundryup” and everything installed correctly!
I hope this “fix” good or bad comes handy for anyone els trying to install Foundry (Solidity framework)