51 lines
1.2 KiB
Nix
51 lines
1.2 KiB
Nix
{ config, lib, ... }:
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with builtins;
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with lib;
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let out = rec {
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eq = x: y: x == y;
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ne = x: y: x != y;
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mod = x: y: x - y * (x / y);
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addName = name: set:
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set // { inherit name; };
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addNames = mapAttrs addName;
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types = import ./types.nix {
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inherit config;
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lib = lib // { inherit genid optionalTrace; };
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};
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dir.has-default-nix = path: pathExists (path + "/default.nix");
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genid = import ./genid.nix { lib = lib // out; };
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git = import ./git.nix { lib = lib // out; };
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shell = import ./shell.nix { inherit lib; };
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tree = import ./tree.nix { inherit lib; };
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toC = x: let
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type = typeOf x;
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reject = throw "cannot convert ${type}";
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in {
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list = "{ ${concatStringsSep ", " (map toC x)} }";
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null = "NULL";
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set = if isDerivation x then toJSON x else reject;
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string = toJSON x; # close enough
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}.${type} or reject;
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subdirsOf = path:
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mapAttrs (name: _: path + "/${name}")
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(filterAttrs (_: eq "directory") (readDir path));
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getAttrDef = name: set: set.${name} or set.default or null;
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mapAttrValues = f: mapAttrs (_: f);
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setAttr = name: value: set: set // { ${name} = value; };
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optionalTrace = c: msg: x: if c then trace msg x else x;
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}; in out
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