gistfile1.txt

$ nix-env -iA mypackage
error: Package `foobar-123` in ./packages.nix is marked as insecure for the following reasons:

  - CVE-2016-1234 remote privilege escalation because lol
  - CVE-2016-1235 remote privilege escalation because lol

You can install it anyway by whitelisting this package, using the following methods:

nixos-rebuild
-------------
Adding `pkgs.mypackage` to `nixpkgs.config.permittedInsecurePackages` in the
configuration.nix, like so:

  { nixpkgs.config.permittedInsecurePackages = [ "foobar-123" ]; }

nix-env, nix-build, or other nix commands:
------------------------------------------
Adding `pkgs.mypackage` to `permittedInsecurePackages` in
~/.nixpkgs/config.nix, like so:

  { permittedInsecurePackages = [ "foobar-123" ]; }

packages.nix

{
  mypackage = stdenv.mkDerivation rec {
    name = "foobar-${version}";
    version = "123";
    # ...
    
    meta = {
      knownVulnerabilities = [
        "CVE-2016-1234 remote privilege escalation because lol"
        "CVE-2016-1235 remote privilege escalation because lol"
      ];
    };
  }; 
}