devos/flake.nix

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Nix
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{
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description = "A highly structured configuration database.";
inputs =
{
master.url = "nixpkgs/master";
nixos.url = "nixpkgs/release-20.09";
home.url = "github:nix-community/home-manager/release-20.09";
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flake-utils.url = "github:numtide/flake-utils";
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devshell.url = "github:numtide/devshell";
};
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outputs = inputs@{ self, home, nixos, master, flake-utils, nur, devshell }:
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let
inherit (builtins) attrNames attrValues readDir elem pathExists filter;
inherit (flake-utils.lib) eachDefaultSystem mkApp;
inherit (nixos) lib;
inherit (lib) all removeSuffix recursiveUpdate genAttrs filterAttrs
mapAttrs;
inherit (utils) pathsToImportedAttrs genPkgset overlayPaths modules
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genPackages pkgImport;
utils = import ./lib/utils.nix { inherit lib; };
system = "x86_64-linux";
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externOverlays = [ nur.overlay devshell.overlay ];
externModules = [ home.nixosModules.home-manager ];
pkgset =
let overlays = (attrValues self.overlays) ++ externOverlays; in
genPkgset {
inherit master nixos overlays system;
};
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outputs = {
nixosConfigurations =
import ./hosts (recursiveUpdate inputs {
inherit lib pkgset system utils externModules;
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});
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overlay = import ./pkgs;
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overlays = pathsToImportedAttrs overlayPaths;
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nixosModules = modules;
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templates.flk.path = ./.;
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templates.flk.description = "flk template";
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defaultTemplate = self.templates.flk;
};
in
(eachDefaultSystem
(system':
let
pkgs' = pkgImport {
pkgs = master;
system = system';
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overlays = [ devshell.overlay ];
};
packages' = genPackages {
overlay = self.overlay;
overlays = self.overlays;
pkgs = pkgs';
};
filtered = filterAttrs
(_: v:
(v.meta ? platforms)
&& (elem system' v.meta.platforms)
&& (
(all (dev: dev.meta ? platforms) v.buildInputs)
&& (all (dev: elem system' dev.meta.platforms) v.buildInputs)
))
packages';
in
{
devShell = import ./shell.nix {
pkgs = pkgs';
};
apps =
let
validApps = attrNames (filterAttrs (_: drv: pathExists "${drv}/bin")
self.packages."${system}");
validSystems = attrNames filtered;
filterBins = filterAttrs
(n: _: elem n validSystems && elem n validApps)
filtered;
in
mapAttrs (_: drv: mkApp { inherit drv; }) filterBins;
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packages =
filtered;
})) // outputs;
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}