mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-18 19:26:02 +00:00
28 lines
1.2 KiB
XML
28 lines
1.2 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
version="5.0"
|
|
xml:id="sec-nix-network-issues">
|
|
<title>Network Problems</title>
|
|
|
|
<para>
|
|
Nix uses a so-called <emphasis>binary cache</emphasis> to optimise building a
|
|
package from source into downloading it as a pre-built binary. That is,
|
|
whenever a command like <command>nixos-rebuild</command> needs a path in the
|
|
Nix store, Nix will try to download that path from the Internet rather than
|
|
build it from source. The default binary cache is
|
|
<uri>https://cache.nixos.org/</uri>. If this cache is unreachable, Nix
|
|
operations may take a long time due to HTTP connection timeouts. You can
|
|
disable the use of the binary cache by adding <option>--option
|
|
use-binary-caches false</option>, e.g.
|
|
<screen>
|
|
<prompt># </prompt>nixos-rebuild switch --option use-binary-caches false
|
|
</screen>
|
|
If you have an alternative binary cache at your disposal, you can use it
|
|
instead:
|
|
<screen>
|
|
<prompt># </prompt>nixos-rebuild switch --option binary-caches <replaceable>http://my-cache.example.org/</replaceable>
|
|
</screen>
|
|
</para>
|
|
</section>
|