40 lines
941 B
Nix
40 lines
941 B
Nix
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rec {
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/* Fuses a list of attribute sets into a single attribute set.
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Example:
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x = [ { a = 1; } { b = 2; } ]
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fuseAttrs x
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=> { a = 1; b = 2; }
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*/
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fuseAttrs = builtins.foldl' (attrs: x: attrs // x) { };
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/* Maps then fuses a list of attribute sets into a single attribute set.
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Example:
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x = [ "a" "b" ]
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mapFuse (c: { ${c} = 42; }) x
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=> { a = 42; b = 42; }
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*/
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mapFuse = f: attrsList: fuseAttrs (builtins.map f attrsList);
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/* Equivalent of lib.singleton but for an attribute set.
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Example:
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singleAttr "a" 1
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=> { a = 1; }
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*/
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singleAttr = name: value: { ${name} = value; };
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mapSingleFuse = f: mapFuse (x: singleAttr x (f x));
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/* Creates a relative path as a string
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Example:
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mkRel /home/test/ "file.txt"
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=> "/home/test/file.txt"
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*/
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mkRel = path: file: builtins.toString (path + "/${file}");
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compose = f: g: (x: g (f x));
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}
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