If you have Nix installed on your machine, you can install this package and all its dependencies automatically by clicking on the link above. This requires that you have the application/nix-package MIME type associated with the nix-install-package program in your web browser. Alternatively, you can install it from the command-line:

$ nix-install-package --non-interactive --url http://hydra.nixos.org/build/2633741/nix/pkg/libchop-UNKNOWN-i686-linux.nixpkg

If you get an error message “Permission denied”, you should make sure that you have sufficient access rights to the Nix store, e.g., run the command as root.

If you have Nix installed on your machine, this build and all its dependencies can be unpacked into your local Nix store by doing:

$ gunzip < libchop-UNKNOWN.closure.gz | nix-store --import

or to download and unpack in one command:

$ curl http://hydra.nixos.org/build/2633741/nix/closure/libchop-UNKNOWN.closure.gz | gunzip | nix-store --import

The package can then be found in the path /nix/store/acglhm2pq5cvzqg0q4d4sxq2a78fja1r-libchop-UNKNOWN. You’ll probably also want to do

$ nix-env -i /nix/store/acglhm2pq5cvzqg0q4d4sxq2a78fja1r-libchop-UNKNOWN

to actually install the package in your Nix user environment.

If you get the error message “imported archive lacks a signature”, you should make sure that you have sufficient access rights to the Nix store, e.g., run the command as root.