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nix-serve.md

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Nix-serve

A standalone Nix binary cache server.

nix-serve is a small utility to serve a Nix store as a binary cache, allowing it to be used as a substituter by other Nix installations.

Installation

Add nix-serve on host service section from homelab.json file

inv init.nix-serve --hostnames <hostname>
inv nix.deploy --hostnames <hostname>

Testing the nix cache server

curl -sLv https://nixcache.adele.im/nix-cache-info
nix verify --store https://nixcache.adele.im:5000 --trusted-public-keys 'nixcache.adele.im:+2EnxpRxBCNd5V/2PNoobcq7fW+oXpZ0IhRwL+X2WHI=' /nix/store

Utilization

Edit flake.nix file

  nixConfig = {
    extra-substituers = [
      "http://nixcache.adele.im:5000"
      "https://nix-community.cachix.org"
    ];
    extra-trusted-public-keys =
      [
        "nixcache.adele.im:+2EnxpRxBCNd5V/2PNoobcq7fW+oXpZ0IhRwL+X2WHI="
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
      ];
  };