Package ‘network-manager-1.10.2’ in /Users/graham/nix-borg/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/grahamc-ndnd/pkgs/tools/networking/network-manager/default.nix:116 is not supported on ‘x86_64-darwin’, refusing to evaluate.

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowBroken = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowBroken = true; }
to ~/.config/nixpkgs/config.nix.

shrinking /nix/store/65da582p9jgakvwzbfysr785vnb0jfjv-NetworkManager-vpnc-gnome-1.2.4/lib/NetworkManager/libnm-vpn-plugin-vpnc.so
shrinking /nix/store/yyiwmqrwppr98gmylcqbhy2y3wg9d5rs-NetworkManager-openvpn-gnome-1.8.0/lib/NetworkManager/libnm-vpn-plugin-openvpn-editor.so
strip is /nix/store/b0zlxla7dmy1iwc3g459rjznx59797xy-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/65da582p9jgakvwzbfysr785vnb0jfjv-NetworkManager-vpnc-gnome-1.2.4/lib  /nix/store/65da582p9jgakvwzbfysr785vnb0jfjv-NetworkManager-vpnc-gnome-1.2.4/libexec 
strip is /nix/store/b0zlxla7dmy1iwc3g459rjznx59797xy-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/yyiwmqrwppr98gmylcqbhy2y3wg9d5rs-NetworkManager-openvpn-gnome-1.8.0/lib  /nix/store/yyiwmqrwppr98gmylcqbhy2y3wg9d5rs-NetworkManager-openvpn-gnome-1.8.0/libexec 
patching script interpreter paths in /nix/store/65da582p9jgakvwzbfysr785vnb0jfjv-NetworkManager-vpnc-gnome-1.2.4
patching script interpreter paths in /nix/store/yyiwmqrwppr98gmylcqbhy2y3wg9d5rs-NetworkManager-openvpn-gnome-1.8.0
checking for references to /tmp/nix-build-NetworkManager-vpnc-gnome-1.2.4.drv-0 in /nix/store/65da582p9jgakvwzbfysr785vnb0jfjv-NetworkManager-vpnc-gnome-1.2.4...
checking for references to /tmp/nix-build-NetworkManager-openvpn-gnome-1.8.0.drv-0 in /nix/store/yyiwmqrwppr98gmylcqbhy2y3wg9d5rs-NetworkManager-openvpn-gnome-1.8.0...

patching script interpreter paths in /nix/store/rrckcaj5ffxw1sw9yz8mvwng3xmilpmk-NetworkManager-openvpn-gnome-1.8.0
checking for references to /build in /nix/store/rrckcaj5ffxw1sw9yz8mvwng3xmilpmk-NetworkManager-openvpn-gnome-1.8.0...
/nix/store/k92rd9mipc8c7nq6bl8an22k5jc84g5q-network-manager-1.10.2
/nix/store/dm2gm687zaf0di7wmc3b783r1jk8l15f-NetworkManager-fortisslvpn-gnome-1.2.4
/nix/store/1ngw1463hpv3nf19g2ja4jn0v6ipw7v6-NetworkManager-iodine-gnome-1.2.0
/nix/store/9jfcxa9r4pcnyvmxxas5s5dqm0s5lkrz-NetworkManager-openconnect-gnome-1.2.4
/nix/store/rrckcaj5ffxw1sw9yz8mvwng3xmilpmk-NetworkManager-openvpn-gnome-1.8.0
/nix/store/x2a28dyaf3gvpvg98r11zq0crycjmq6y-NetworkManager-pptp-gnome-1.2.4
/nix/store/lkkhp8bal7vy9ygbhwwxj893kz22xzyg-NetworkManager-vpnc-gnome-1.2.4
/nix/store/jl4dnavapw27n6vhy5l5d5k4ics748zy-network-manager-applet-1.8.6