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wip: faulty first attempt at home-manager integration

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Jake Hamilton 2023-04-10 15:59:57 -07:00
parent b428b981b9
commit 17ef1c563d
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lib/home/default.nix Normal file
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{ core-inputs, user-inputs, snowfall-lib }:
let
inherit (core-inputs.nixpkgs.lib) assertMsg foldl head tail concatMap optionalAttrs mkIf filterAttrs mapAttrs' mkMerge mapAttrsToList;
user-homes-root = snowfall-lib.fs.get-snowfall-file "homes";
user-modules-root = snowfall-lib.fs.get-snowfall-file "modules";
in
{
home = rec {
# Modules in home-manager expect `hm` to be available directly on `lib` itself.
home-lib = snowfall-lib.internal.system-lib.extend (final: prev:
# @NOTE(jakehamilton): This order is important, this library's extend and other utilities must write
# _over_ the original `system-lib`.
snowfall-lib.internal.system-lib
// prev
// {
hm = snowfall-lib.internal.system-lib.home-manager.hm;
});
split-user-and-host = target:
let
raw-name-parts = builtins.split "@" target;
name-parts = builtins.filter builtins.isString raw-name-parts;
user = builtins.elemAt name-parts 0;
host =
if builtins.length name-parts > 1 then
builtins.elemAt name-parts 1
else
"";
in
{
inherit user host;
};
create-home =
{ path
, name ? builtins.unsafeDiscardStringContext (snowfall-lib.system.get-inferred-system-name path)
, modules ? [ ]
, specialArgs ? { }
, channelName ? "nixpkgs"
, system ? "x86_64-linux"
}:
let
user-metadata = split-user-and-host name;
# @NOTE(jakehamilton): home-manager has trouble with `pkgs` recursion if it isn't passed in here.
pkgs = user-inputs.self.pkgs.${system}.${channelName} // { lib = home-lib; };
lib = home-lib;
in
assert assertMsg (user-inputs ? home-manager) "In order to create home-manager configurations, you must include `home-manager` as a flake input.";
assert assertMsg (user-metadata.host != "") "Snowfall Lib homes must be named with the format: user@system";
{
inherit channelName system;
output = "homeConfigurations";
modules = [ path ] ++ modules;
specialArgs = {
inherit name;
inherit (user-metadata) user host;
format = "home";
inputs = snowfall-lib.flake.without-src user-inputs;
# @NOTE(jakehamilton): home-manager has trouble with `pkgs` recursion if it isn't passed in here.
inherit pkgs lib;
};
builder = args:
user-inputs.home-manager.lib.homeManagerConfiguration
((builtins.removeAttrs args [ "system" "specialArgs" ]) // {
inherit pkgs lib;
modules = args.modules ++ [
(module-args: import ./nix-registry-module.nix (module-args // {
inherit user-inputs core-inputs;
}))
];
extraSpecialArgs = specialArgs // args.specialArgs;
});
};
get-target-homes-metadata = target:
let
homes = snowfall-lib.fs.get-directories target;
existing-homes = builtins.filter (home: builtins.pathExists "${home}/default.nix") homes;
create-home-metadata = path: {
path = "${path}/default.nix";
# We are building flake outputs based on file contents. Nix doesn't like this
# so we have to explicitly discard the string's path context to allow us to
# use the name as a variable.
name = builtins.unsafeDiscardStringContext (builtins.baseNameOf path);
# We are building flake outputs based on file contents. Nix doesn't like this
# so we have to explicitly discard the string's path context to allow us to
# use the name as a variable.
system = builtins.unsafeDiscardStringContext (builtins.baseNameOf target);
};
home-configurations = builtins.map create-home-metadata existing-homes;
in
home-configurations;
# Create all available homes.
# Type: Attrs -> Attrs
# Usage: create-homes { users."my-user@my-system".specialArgs.x = true; modules = [ my-shared-module ]; }
# result: { "my-user@my-system" = <flake-utils-plus-home-configuration>; }
create-homes = homes:
let
targets = snowfall-lib.fs.get-directories user-homes-root;
target-homes-metadata = concatMap get-target-homes-metadata targets;
user-home-modules = snowfall-lib.module.create-modules {
src = "${user-modules-root}/home";
};
user-home-modules-list = builtins.attrValues user-home-modules;
create-home' = home-metadata:
let
inherit (home-metadata) name;
overrides = homes.users.${name} or { };
in
{
"${name}" = create-home (overrides // home-metadata // {
modules = user-home-modules-list ++ (homes.users.${name}.modules or [ ]) ++ (homes.modules or [ ]);
});
};
created-homes = foldl (homes: home-metadata: homes // (create-home' home-metadata)) { } target-homes-metadata;
in
created-homes;
create-home-system-modules = users:
let
created-users = create-homes users;
extra-special-args-module =
args@{ config
, pkgs
, system ? pkgs.system
, target ? system
, format ? "home"
, host ? ""
, virtual ? (snowfall-lib.system.is-virtual target)
, systems ? { }
, ...
}:
{
_file = "virtual:snowfallorg/home/extra-special-args";
config = {
home-manager.extraSpecialArgs = {
inherit system target format virtual systems host;
lib = home-lib;
# pkgs = user-inputs.self.pkgs.${system}.nixpkgs;
inputs = snowfall-lib.flake.without-src user-inputs;
};
};
};
system-modules = builtins.map
(name:
let
created-user = created-users.${name};
user-module = head created-user.modules;
other-modules = tail created-user.modules;
user-name = created-user.specialArgs.user;
in
args@{ config
, pkgs
, host ? ""
, ...
}:
let
host-matches = created-user.specialArgs.host == host;
wrapped-user-module = home-args:
let
modified-args = args // {
inherit (created-user.specialArgs) user;
};
user-module-result = (import user-module (home-args // modified-args)) // {
_file = user-module;
};
in
user-module-result;
in
{
_file = "virtual:snowfallorg/home/user/${name}";
imports =
if snowfall-lib.system.is-darwin created-user.system then
[ ../../modules/darwin/home/default.nix ]
else
[ ../../modules/nixos/home/default.nix ];
config = mkIf host-matches {
home-manager = {
users.${user-name} = wrapped-user-module args;
sharedModules = other-modules;
};
};
}
)
(builtins.attrNames created-users);
in
[ extra-special-args-module ] ++ system-modules;
};
}