37 lines
1.2 KiB
Nix
37 lines
1.2 KiB
Nix
{
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lib ? import <nixpkgs/lib>,
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}: let
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t = lib.types;
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in lib.fix (self: {
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/** Perform module-system type checking and resolving on a single option value. */
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typeCheck = loc: optionType: value:
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assert lib.isOptionType optionType;
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assert lib.isList loc;
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assert lib.all lib.isString loc;
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let
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merged = lib.modules.mergeDefinitions loc optionType [ {
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inherit value;
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file = "«inline»";
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} ];
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in merged.mergedValue;
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/** Either a list of strings, or a dotted string that will be split. */
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convenientAttrPath = t.coercedTo t.str (lib.splitString ".") (t.listOf t.str);
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executablePathInStore = lib.mkOptionType {
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name = "exepath";
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description = "executable path in the Nix store";
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descriptionClass = "noun";
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merge = lib.mergeEqualOption;
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functor = lib.defaultFunctor "exepath";
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check = x: if lib.isDerivation x then (
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x.meta.mainProgram or null != null
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) else (
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lib.pathInStore.check x
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);
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};
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concatFoldl = f: list: lib.foldl' (acc: value: acc ++ (f value)) [ ] list;
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recUpdateFoldl = f: list: lib.foldl' (acc: value: lib.recursiveUpdate acc (f value)) { } list;
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recUpdateFoldlAttrs = f: attrs: lib.foldlAttrs (acc: name: value: lib.recursiveUpdate acc (f name value)) { } attrs;
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})
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