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42 lines
1.2 KiB
Nix
42 lines
1.2 KiB
Nix
{ lib, ... }:
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let
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inherit (builtins) attrNames isAttrs readDir listToAttrs;
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inherit (lib) filterAttrs hasSuffix mapAttrs' nameValuePair removeSuffix;
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# mapFilterAttrs ::
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# (name -> value -> bool )
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# (name -> value -> { name = any; value = any; })
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# attrs
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mapFilterAttrs = seive: f: attrs: filterAttrs seive (mapAttrs' f attrs);
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# Generate an attribute set by mapping a function over a list of values.
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genAttrs' = values: f: listToAttrs (map f values);
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in
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{
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inherit mapFilterAttrs genAttrs';
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recImport = { dir, _import ? base: import "${dir}/${base}.nix" }:
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mapFilterAttrs
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(_: v: v != null)
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(n: v:
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if n != "default.nix" && hasSuffix ".nix" n && v == "regular"
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then
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let name = removeSuffix ".nix" n; in nameValuePair (name) (_import name)
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else
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nameValuePair ("") (null))
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(readDir dir);
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# Convert a list to file paths to attribute set
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# that has the filenames stripped of nix extension as keys
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# and imported content of the file as value.
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pathsToImportedAttrs = paths:
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genAttrs' paths (path: {
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name = removeSuffix ".nix" (baseNameOf path);
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value = import path;
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});
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}
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