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|
{ current-date
, current-host-name
, current-user-name
}:
let
lib = import <nixpkgs/lib>;
krebs-modules-path = ./krebs/3modules;
krebs-pkgs-path = ./krebs/5pkgs;
user-modules-path = ./. + "/${current-user-name}/3modules";
user-pkgs-path = ./. + "/${current-user-name}/5pkgs";
# XXX This is only used interactively, e.g. using get.
pkgs =
let
pkgs = import <nixpkgs> {};
args = {
inherit pkgs;
lib = pkgs.lib;
};
in
pkgs //
import krebs-pkgs-path args //
import user-pkgs-path args;
out =
{ inherit pkgs; } //
lib.mapAttrs (_: builtins.getAttr "main")
(lib.filterAttrs (_: builtins.hasAttr "main")
(lib.mapAttrs
(k: v:
if lib.hasPrefix "." k || v != "directory" then
{}
else if builtins.pathExists (./. + "/${k}/default.nix") then
{ main = import (./. + "/${k}"); }
else if builtins.pathExists (./. + "/${k}/1systems") then
{ main = mk-namespace (./. + "/${k}"); }
else
{})
(builtins.readDir ./.)));
eval = path: import <nixpkgs/nixos/lib/eval-config.nix> {
system = builtins.currentSystem;
modules = [
path
krebs-modules-path
user-modules-path
] ++ [
({ config, lib, pkgs, ... }@args: {
_module.args.pkgs =
(import krebs-pkgs-path args) //
(import user-pkgs-path args);
})
];
};
mk-namespace = path: mapNixDir mk-system (path + "/1systems");
mk-system = path: rec {
inherit (eval path) config options;
system = config.system.build.toplevel;
fetch = import ./krebs/0tools/fetch.nix { inherit config lib; };
};
mapNixDir = f: path: lib.mapAttrs (_: f) (nixDir path);
nixDir = path:
builtins.listToAttrs
(catMaybes
(lib.mapAttrsToList
(k: v: {
directory =
let p = path + "/${k}/default.nix"; in
if builtins.pathExists p
then Just (lib.nameValuePair k p)
else Nothing;
regular =
let p = path + "/${k}"; in
if lib.hasSuffix ".nix" p
then Just (lib.nameValuePair (lib.removeSuffix ".nix" k) p)
else Nothing;
}.${v} or Nothing)
(builtins.readDir path)));
# TODO move to lib
Just = x: { type = "maybe"; value = x; };
Nothing = { type = "maybe"; };
isMaybe = x: builtins.typeOf x == "set" && x.type or false == "maybe";
isJust = x: isMaybe x && builtins.hasAttr "value" x;
fromJust = x: assert isJust x; x.value;
catMaybes = xs: map fromJust (builtins.filter isJust xs);
in out
|
