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nix-config-tn/flake.nix

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{
description = "My nixos homelab";
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inputs = {
# Nixpkgs and unstable
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-23.11";
# impermanence
# https://github.com/nix-community/impermanence
impermanence.url = "github:nix-community/impermanence";
# nur
nur.url = "github:nix-community/NUR";
# nix-community hardware quirks
# https://github.com/nix-community
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nixos-hardware.url = "github:NixOS/nixos-hardware/master";
# home-manager - unstable
# https://github.com/nix-community/home-manager
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home-manager = {
url = "github:nix-community/home-manager/master";
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inputs.nixpkgs.follows = "nixpkgs";
};
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# home-manager - stable
# https://github.com/nix-community/home-manager
home-manager-stable = {
url = "github:nix-community/home-manager/release-23.11";
inputs.nixpkgs.follows = "nixpkgs-stable";
};
# sops-nix - secrets with mozilla sops
# https://github.com/Mic92/sops-nix
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sops-nix = {
url = "github:Mic92/sops-nix";
inputs.nixpkgs.follows = "nixpkgs";
};
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# VSCode community extensions
# https://github.com/nix-community/nix-vscode-extensions
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nix-vscode-extensions = {
url = "github:nix-community/nix-vscode-extensions";
inputs.nixpkgs.follows = "nixpkgs";
};
# nix-index database
# https://github.com/nix-community/nix-index-database
nix-index-database = {
url = "github:nix-community/nix-index-database";
inputs.nixpkgs.follows = "nixpkgs";
};
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# nix-inspect - inspect nix derivations usingn a TUI interface
# https://github.com/bluskript/nix-inspect
nix-inspect = {
url = "github:bluskript/nix-inspect";
};
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};
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outputs =
{ self
, nixpkgs
, sops-nix
, home-manager
, nix-vscode-extensions
, impermanence
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, ...
} @ inputs:
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let
inherit (self) outputs;
forAllSystems = nixpkgs.lib.genAttrs [
"aarch64-linux"
"x86_64-linux"
];
in
rec {
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# Use nixpkgs-fmt for 'nix fmt'
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formatter = forAllSystems (system: nixpkgs.legacyPackages."${system}".nixpkgs-fmt);
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# setup devshells against shell.nix
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devShells = forAllSystems (pkgs: import ./shell.nix { inherit pkgs; });
# extend lib with my custom functions
lib = nixpkgs.lib.extend (
final: prev: {
inherit inputs;
myLib = import ./nixos/lib { inherit inputs; lib = final; };
}
);
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nixosConfigurations =
let
inherit inputs outputs;
# Import overlays for building nixosconfig with them.
overlays = import ./nixos/overlays { inherit inputs; };
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# generate a base nixos configuration with the
# specified overlays, hardware modules, and any extraModules applied
mkNixosConfig =
{ hostname
, system ? "x86_64-linux"
, nixpkgs ? inputs.nixpkgs
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, hardwareModules ? [ ]
# basemodules is the base of the entire machine building
# here we import all the modules and setup home-manager
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, baseModules ? [
sops-nix.nixosModules.sops
home-manager.nixosModules.home-manager
impermanence.nixosModules.impermanence
./nixos/profiles/global.nix # all machines get a global profile
./nixos/modules/nixos # all machines get nixos modules
./nixos/hosts/${hostname} # load this host's config folder for machine-specific config
{
home-manager = {
useUserPackages = true;
useGlobalPkgs = true;
extraSpecialArgs = {
inherit inputs hostname system;
};
};
}
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]
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, profileModules ? [ ]
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}:
nixpkgs.lib.nixosSystem {
inherit system lib;
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modules = baseModules ++ hardwareModules ++ profileModules;
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specialArgs = { inherit self inputs nixpkgs; };
# Add our overlays
pkgs = import nixpkgs {
inherit system;
overlays = builtins.attrValues overlays;
config = {
allowUnfree = true;
allowUnfreePredicate = _: true;
};
};
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};
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in
{
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"durincore" = mkNixosConfig {
# T470 Thinkpad
# Nix dev laptop
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hostname = "durincore";
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system = "x86_64-linux";
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hardwareModules = [
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./nixos/profiles/hw-thinkpad-t470.nix
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inputs.nixos-hardware.nixosModules.lenovo-thinkpad-t470s
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];
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profileModules = [
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./nixos/profiles/role-workstation.nix
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./nixos/profiles/role-dev.nix
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{ home-manager.users.jahanson = ./nixos/home/jahanson/workstation.nix; }
];
};
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"varda" = mkNixosConfig {
# Arm64 cax21 @ Hetzner
# forgejo server
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hostname = "varda";
system = "aarch64-linux";
hardwareModules = [
./nixos/profiles/hw-hetzner-cax.nix
];
profileModules = [
./nixos/profiles/role-server.nix
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{ home-manager.users.jahanson = ./nixos/home/jahanson/server.nix; }
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];
};
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};
# Convenience output that aggregates the outputs for home, nixos.
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# Also used in ci to build targets generally.
top =
let
nixtop = nixpkgs.lib.genAttrs
(builtins.attrNames inputs.self.nixosConfigurations)
(attr: inputs.self.nixosConfigurations.${attr}.config.system.build.toplevel);
in
nixtop;
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};
}