nix: fix `--argstr cc $compiler`
Update nix build
nix: only install final qcc output, and install it into bin
Update CMakeLists.txt
nix: create a composed shell derivation
nix: update netradiant derivation
nix: add netradiant minizip dependency
nix: support compiler override
Update the netradiant nix env
Add netradiant nix env
Add nix-shell environment