<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/xinclude" xml:id="sec-prefer-remote-fetch"> <title>prefer-remote-fetch overlay</title> <para> <function>prefer-remote-fetch</function> is an overlay that download sources on remote builder. This is useful when the evaluating machine has a slow upload while the builder can fetch faster directly from the source. To use it, put the following snippet as a new overlay: <programlisting> self: super: (super.prefer-remote-fetch self super) </programlisting> A full configuration example for that sets the overlay up for your own account, could look like this <screen> <prompt>$ </prompt>mkdir ~/.config/nixpkgs/overlays/ <prompt>$ </prompt>cat > ~/.config/nixpkgs/overlays/prefer-remote-fetch.nix <<EOF self: super: super.prefer-remote-fetch self super EOF </screen> </para> </section>