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nixfiles/lib/flake-helper.nix

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{ self, nixpkgs, agenix, chaosevents, fernglas, fieldpoc, nixos-exporter, solid-xmpp-alarm, ... }@inputs:
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rec {
generateNixosSystem = {
name,
system ? "x86_64-linux",
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group ? null,
modules ? [],
}: let
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localNixpkgs = nixpkgs.lib.attrByPath [ "nixpkgs-${name}" ] nixpkgs inputs;
in localNixpkgs.lib.nixosSystem {
system = system;
modules = modules ++ [
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({ ... }: {
/*
Make the contents of the flake availiable to modules.
Useful for having the monitoring server scraping the
target config from all other servers automatically.
*/
_module.args = {
inputs = inputs;
_nixfiles = self;
};
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})
../configuration/common
../users/clerie
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({ ... }: {
nixpkgs.overlays = [
self.overlays.clerie
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(_: _: {
inherit (agenix.packages."x86_64-linux")
agenix;
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inherit (chaosevents.packages."x86_64-linux")
chaosevents;
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})
];
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clerie.monitoring = nixpkgs.lib.attrsets.optionalAttrs (group != null) { serviceLevel = group; };
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})
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agenix.nixosModules.default
fernglas.nixosModules.default
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fieldpoc.nixosModules.default
nixos-exporter.nixosModules.default
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solid-xmpp-alarm.nixosModules.solid-xmpp-alarm
(../hosts + "/${name}/configuration.nix")
# Automatically load secrets from the hosts secrets directory
({ lib, ... }: let
secretsPath = ../hosts + "/${name}/secrets";
in {
age.secrets = lib.mapAttrs' (filename: _: lib.nameValuePair (lib.removeSuffix ".age" filename) {
file = secretsPath + "/${filename}";
}) (lib.filterAttrs (name: type: (type == "regular") && (lib.hasSuffix ".age" name) ) (if builtins.pathExists secretsPath then builtins.readDir secretsPath else {}));
})
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];
};
mapToNixosConfigurations = hosts: builtins.mapAttrs (name: host: generateNixosSystem host) hosts;
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generateColmenaHost = name: hostSystem: {
deployment = {
targetHost = "${name}.net.clerie.de";
targetUser = null;
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tags = let
group = nixpkgs.lib.attrByPath [ "clerie" "monitoring" "serviceLevel" ] null hostSystem.config;
in nixpkgs.lib.lists.optional (group != null) group;
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};
nixpkgs.system = hostSystem.config.nixpkgs.system;
imports = hostSystem._module.args.modules;
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deployment.allowLocalDeployment = builtins.any (n: n == name) [ "osmium" ];
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};
mapToColmenaHosts = hosts: builtins.mapAttrs (generateColmenaHost) hosts;
buildHosts = hosts: builtins.mapAttrs (name: host: host.config.system.build.toplevel) (nixpkgs.lib.filterAttrs (name: host: (builtins.substring 0 1 name) != "_") hosts);
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}