nixos-servers/flake.nix

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{
description = "NixOS definitions for our physical servers";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-23.05";
nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
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deploy-rs.url = "github:serokell/deploy-rs";
disko = {
url = "github:nix-community/disko";
inputs.nixpkgs.follows = "nixpkgs";
};
agenix = {
url = "github:ryantm/agenix";
inputs.nixpkgs.follows = "nixpkgs";
};
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};
outputs =
{ self, nixpkgs, deploy-rs, disko, agenix, nixpkgs-unstable, ... }:
let
system = "x86_64-linux";
pkgs = nixpkgs.legacyPackages.${system};
pkgs-unstable = nixpkgs-unstable.legacyPackages.${system};
machines = import ./machines;
# TODO: Maybe use mergeAttrLists
mkNixosSystems = systemDef:
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nixpkgs.lib.foldlAttrs
(acc: name: machine:
acc // {
"${name}" = nixpkgs.lib.nixosSystem (systemDef machine);
})
{ }
machines;
mkDeployNodes = nodeDef:
nixpkgs.lib.foldlAttrs
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(acc: name: machine: acc // { "${name}" = nodeDef machine; })
{ }
machines;
in
{
devShells.${system}.default = pkgs.mkShell {
packages = [
pkgs.libsecret
# TODO: using nixos-anywhere from nixos-unstable produces buffer overflow.
# Related to this issue: https://github.com/nix-community/nixos-anywhere/issues/242
# Should wait until this is merged in nixos-unstable.
# pkgs-unstable.nixos-anywhere
pkgs-unstable.deploy-rs
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pkgs.openssl
pkgs.postgresql_15
pkgs.kubectl
];
};
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formatter.${system} = pkgs.nixfmt;
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nixosConfigurations = mkNixosSystems (machine: {
inherit system;
modules = [
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machine.specificConfig
disko.nixosModules.disko
agenix.nixosModules.default
./configuration.nix
{ networking.hostName = machine.name; }
];
});
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deploy = {
sshUser = "root";
user = "root";
nodes = mkDeployNodes (machine: {
hostname = machine.hostname;
profiles.hypervisor = {
path = deploy-rs.lib.${system}.activate.nixos
self.nixosConfigurations.${machine.name};
};
});
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};
checks = builtins.mapAttrs
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(system: deployLib: deployLib.deployChecks self.deploy)
deploy-rs.lib;
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};
}