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# prefer-remote-fetch overlay {#sec-prefer-remote-fetch} |
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`prefer-remote-fetch` 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: |
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```nix |
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self: super: |
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(super.prefer-remote-fetch self super) |
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``` |
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A full configuration example for that sets the overlay up for your own account, could look like this |
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```ShellSession |
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$ mkdir ~/.config/nixpkgs/overlays/ |
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$ cat > ~/.config/nixpkgs/overlays/prefer-remote-fetch.nix <<EOF |
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self: super: super.prefer-remote-fetch self super |
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EOF |
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``` |
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<section xmlns="http://docbook.org/ns/docbook" |
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xmlns:xlink="http://www.w3.org/1999/xlink" |
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xmlns:xi="http://www.w3.org/2001/xinclude" |
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xml:id="sec-prefer-remote-fetch"> |
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<title>prefer-remote-fetch overlay</title> |
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<para> |
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<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: |
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<programlisting> |
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self: super: |
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(super.prefer-remote-fetch self super) |
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</programlisting> |
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A full configuration example for that sets the overlay up for your own account, could look like this |
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<screen> |
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<prompt>$ </prompt>mkdir ~/.config/nixpkgs/overlays/ |
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<prompt>$ </prompt>cat > ~/.config/nixpkgs/overlays/prefer-remote-fetch.nix <<EOF |
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self: super: super.prefer-remote-fetch self super |
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EOF |
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</screen> |
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</para> |
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</section> |
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