tgirl.cloud
a flake module to ease creating and managing multiple hosts in your nix flake.
refactor: use native builders
isabelroses.com
+3
-48
lib.nix
+3
-48
lib.nix
···
22
22
mapAttrs
23
23
filterAttrs
24
24
mkDefault
25
-
evalModules
26
25
mergeAttrs
27
26
assertMsg
28
27
;
···
91
90
...
92
91
}:
93
92
let
94
-
# create the modulesPath based on the system, we need
95
-
modulesPath = if class == "darwin" then "${nix-darwin}/modules" else "${nixpkgs}/nixos/modules";
96
-
97
-
# we need to import the module list for our system
98
-
# this is either the nixos modules list provided by nixpkgs
99
-
# or the darwin modules list provided by nix darwin
100
-
baseModules = import "${modulesPath}/module-list.nix";
93
+
evalHost = if class == "darwin" then nix-darwin.lib.darwinSystem else nixpkgs.lib.nixosSystem;
101
94
102
-
eval = evalModules {
95
+
eval = evalHost {
103
96
# we use recursiveUpdate such that users can "override" the specialArgs
104
97
#
105
98
# This should only be used for special arguments that need to be evaluated
···
113
106
# even though self is just the same as `inputs.self`
114
107
# we still pass this as some people will use this
115
108
self
116
-
117
-
# we need to set this because some modules require it sadly
118
-
# you may also recall `modulesPath + /installer/scan/not-detected.nix`
119
-
modulesPath
120
109
;
121
110
} specialArgs;
122
111
123
-
# A nominal type for modules. When set and non-null, this adds a check to
124
-
# make sure that only compatible modules are imported.
125
-
class = classToND class;
126
-
127
112
modules = concatLists [
128
-
# bring in all of our base modules
129
-
baseModules
130
-
131
113
# import our host system paths
132
114
(
133
115
if path != null then
···
159
141
);
160
142
})
161
143
162
-
# some modules to have these arguments, like documentation.nix
163
-
# <https://github.com/NixOS/nixpkgs/blob/9692553cb583e8dca46b66ab76c0eb2ada1a4098/nixos/modules/misc/documentation.nix>
164
-
(singleton {
165
-
_module.args = {
166
-
inherit baseModules;
167
-
168
-
# this should in the future be the modules that the user added without baseModules
169
-
modules = [ ];
170
-
171
-
# TODO: remove in 25.05
172
-
# https://github.com/NixOS/nixpkgs/blob/9692553cb583e8dca46b66ab76c0eb2ada1a4098/nixos/lib/eval-config.nix#L38
173
-
extraModules = [ ];
174
-
};
175
-
})
176
-
177
144
# here we make some basic assumptions about the system the person is using
178
145
# like the system type and the hostname
179
146
(singleton {
···
200
167
# without supplying an upstream nixpkgs source, nix-darwin will not be able to build
201
168
# and will complain and log an error demanding that you must set this value
202
169
nixpkgs.source = mkDefault nixpkgs;
203
-
204
-
system = {
205
-
# i don't quite know why this is set but upstream does it so i will too
206
-
checks.verifyNixPath = false;
207
-
208
-
# we use these values to keep track of what upstream revision we are on, this also
209
-
# prevents us from recreating docs for the same configuration build if nothing has changed
210
-
darwinVersionSuffix = ".${nix-darwin.shortRev or nix-darwin.dirtyShortRev or "dirty"}";
211
-
darwinRevision = nix-darwin.rev or nix-darwin.dirtyRev or "dirty";
212
-
};
213
170
}))
214
171
215
172
# import any additional modules that the user has provided
···
222
179
else
223
180
assert assertMsg (nix-darwin != null) "nix-darwin must be set when class is darwin";
224
181
{
225
-
darwinConfigurations.${name} = eval // {
226
-
system = eval.config.system.build.toplevel;
227
-
};
182
+
darwinConfigurations.${name} = eval;
228
183
};
229
184
230
185
foldAttrsRecursive = foldl' (acc: attrs: recursiveUpdate acc attrs) { };