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authorGregor Kleen <gkleen@yggdrasil.li>2020-12-31 14:26:32 +0100
committerGregor Kleen <gkleen@yggdrasil.li>2021-01-03 20:16:56 +0100
commitc6eac8a549fd9f55d5da908dbe49da9301e264f0 (patch)
tree9f71db38590c55f682f35efe1153616e4f4dd2b9 /utils/default.nix
parent5e868ac30eefa04de215268cd10e06a32daa0e9b (diff)
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Set up template
Diffstat (limited to 'utils/default.nix')
-rw-r--r--utils/default.nix57
1 files changed, 57 insertions, 0 deletions
diff --git a/utils/default.nix b/utils/default.nix
new file mode 100644
index 00000000..d00357af
--- /dev/null
+++ b/utils/default.nix
@@ -0,0 +1,57 @@
1{ lib }:
2rec {
3 inherit (builtins) readDir;
4 inherit (lib) filterAttrs hasSuffix removeSuffix mapAttrs' nameValuePair isFunction functionArgs setFunctionArgs id;
5 mapFilterAttrs = seive: f: attrs: filterAttrs seive (mapAttrs' f attrs);
6 recImport = { dir, _import ? name: _base: import "${toString dir}/${name}" }:
7 mapFilterAttrs
8 (_: v: v != null)
9 (n: v:
10 if n != "default.nix" && hasSuffix ".nix" n && v == "regular"
11 then
12 let name = removeSuffix ".nix" n; in nameValuePair (name) (_import n name)
13 else
14 if v == "directory"
15 then
16 nameValuePair n (_import n n)
17 else
18 nameValuePair ("") (null))
19 (readDir dir);
20
21 types.attrNameSet = attr:
22 let
23 elemType = lib.types.enum (builtins.attrNames attr);
24 in lib.types.mkOptionType rec {
25 name = "attrNameSet";
26 description = "set of names taken from an attribute set";
27 check = lib.isList;
28 emptyValue = { value = {}; };
29 getSubOptions = prefix: elemType.getSubOptions (prefix ++ ["*"]);
30 getSubModules = elemType.getSubModules;
31 substSubModules = m: lib.types.listOf (elemType.substSubModules m);
32 functor = (lib.types.defaultFunctor name) // { wrapped = elemType; };
33 merge = loc: defs: map (x: x.value) (lib.lists.filter (x: x ? value) (lib.lists.unique (lib.lists.concatLists (lib.lists.imap1 (n: def:
34 lib.lists.imap1 (m: def':
35 (lib.modules.mergeDefinitions
36 (loc ++ ["[definition ${toString n}-entry ${toString m}]"])
37 elemType
38 [{ inherit (def) file; value = def'; }]
39 ).optionalValue
40 ) def.value
41 ) defs))));
42 };
43
44 overrideModuleArgs =
45 let
46 overrideModuleArgs = module: appOverride: if isFunction module then overrideModuleArgs' module appOverride else module;
47 overrideModuleArgs' = module: appOverride: setFunctionArgs (inputs: overrideModuleArgs (module (appOverride inputs)) id) (functionArgs module);
48 in overrideModuleArgs;
49
50 overrideModuleOutput =
51 let
52 overrideModuleOutput = module: appOverride: if isFunction module then overrideModuleOutput' module appOverride else appOverride module;
53 overrideModuleOutput' = module: appOverride: setFunctionArgs (inputs: overrideModuleOutput (module inputs) appOverride) (functionArgs module);
54 in overrideModuleOutput;
55
56 overrideModule = module: appInput: appOutput: overrideModuleOutput (overrideModuleArgs module appInput) appOutput;
57}