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# prefer-remote-fetch overlay {#sec-prefer-remote-fetch}
`prefer-remote-fetch` is an overlay that downloads sources on a 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:
```nix
self: super: (super.prefer-remote-fetch self super)
```
A full configuration example that sets the overlay up for your own account could look like this
```ShellSession
$ mkdir ~/.config/nixpkgs/overlays/
$ cat > ~/.config/nixpkgs/overlays/prefer-remote-fetch.nix <<EOF
self: super: super.prefer-remote-fetch self super
EOF
```
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