nix why-depends $(nix-instantiate "<nixpkgs/nixos>" -A system) /nix/store/kqm33bcikjn3g9p9axfysiy7qiy48kdj-0a3755c1799d3a4dc1875d4c59c7c568a64c8456.patch.drv
warning: unable to download 'http://nixos-arm.dezgeg.me/channel/j7n468hs7ph4ip508irma1kk16vxffdh.narinfo': HTTP error 302 (curl error: Timeout was reached); retrying in 269 ms
fixed-output derivation produced path '/nix/store/bmh2s8hlc3jmllajarl1f9f3y38mvc9x-0a3755c1799d3a4dc1875d4c59c7c568a64c8456.patch' with sha256 hash '1flnxgjjrrlzdk5klx47l8y8rg1vmzdd9vhzxxq6wiwyvd4bd92r' instead of the expected hash '0bizaf2yf93hwkrrjcl3fhawyhmw9dzq9pc283dxmmpxqvvif5xg'
cannot build derivation '/nix/store/lk3r899harn5vyzs1iwai4ddrab771y2-network-manager-1.12.2.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/xbd1jnlsfmbjmv76y7rqxx8czp7gw9b3-libproxy-0.4.15.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/h2g523fv2lnjipz2vqxa434vgdwx4zpi-glib-networking-2.56.0.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/c2m2pq45a2zycqjlm8zaypmi3jby0g7x-xfce4-panel-4.12.2.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/c9p3ycx6fz5pfn4r54lxagxf3gxs9yn9-xfce4-screenshooter-1.8.2.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/83z8zls1spbra403b2i7lq5h9xahsw7c-system-path.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/q3pkpa3a9bxznbcvmws0ni7i5qimjmin-xfce4-session-4.12.1.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/8h6ahg7ifd2f22rk19rhq77vwbyc3g65-nixos-system-nixpie-18.09.776.6a3f5bcb061.drv': 1 dependencies couldn't be built
[1 built (1 failed), 0.0 MiB DL]
error: build of '/nix/store/8h6ahg7ifd2f22rk19rhq77vwbyc3g65-nixos-system-nixpie-18.09.776.6a3f5bcb061.drv' failed