shell.nix: Add libseccomp
shell.nix: Add libseccomp

peti/nix,bennofs/nix,ehmry/nix,NixOS/nix,zimbatm/nix,shlevy/nix,layus/nix,peti/nix,dezgeg/nix,dtzWill/nix,layus/nix,bennofs/nix,dezgeg/nix,NixOS/nix,dtzWill/nix,layus/nix,dtzWill/nix,shlevy/nix,pikajude/nix,dtzWill/nix,rycee/nix,bennofs/nix,pikajude/nix,dezgeg/nix,zimbatm/nix,vcunat/nix,shlevy/nix,shlevy/nix,rycee/nix,rycee/nix,rycee/nix,rycee/nix,dezgeg/nix,layus/nix,peti/nix,NixOS/nix,dezgeg/nix,vcunat/nix,peti/nix,bennofs/nix,ehmry/nix,ehmry/nix,NixOS/nix,peti/nix,vcunat/nix,zimbatm/nix,ehmry/nix,dtzWill/nix,NixOS/nix,ehmry/nix,zimbatm/nix,layus/nix,shlevy/nix,vcunat/nix,ehmry/nix,pikajude/nix