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just remembered functions do exist. #18

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Jul 1, 2025
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just remembered functions do exist. #18

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22 changes: 12 additions & 10 deletions default.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -99,25 +99,27 @@ let
let
__config = (f self);
boundAPI = builtins.mapAttrs (_: g: g (self f)) __config.api;
accAttr = attrName: acc: self (c: mapAttr (f c) attrName acc);
mergeAttrs = attrs: self (c: (f c) // attrs);
in
boundAPI
// {
inherit __config;
__functor = functor;

# Configuration updates (accumulating)
filter = filterf: self (c: mapAttr (f c) "filterf" (and filterf));
filterNot = filterf: self (c: mapAttr (f c) "filterf" (andNot filterf));
match = regex: self (c: mapAttr (f c) "filterf" (and (matchesRegex regex)));
matchNot = regex: self (c: mapAttr (f c) "filterf" (andNot (matchesRegex regex)));
map = mapf: self (c: mapAttr (f c) "mapf" (compose mapf));
addPath = path: self (c: mapAttr (f c) "paths" (p: p ++ [ path ]));
addAPI = api: self (c: mapAttr (f c) "api" (a: a // api));
filter = filterf: accAttr "filterf" (and filterf);
filterNot = filterf: accAttr "filterf" (andNot filterf);
match = regex: accAttr "filterf" (and (matchesRegex regex));
matchNot = regex: accAttr "filterf" (andNot (matchesRegex regex));
map = mapf: accAttr "mapf" (compose mapf);
addPath = path: accAttr "paths" (p: p ++ [ path ]);
addAPI = api: accAttr "api" (a: a // api);

# Configuration updates (non-accumulating)
withLib = lib: self (c: (f c) // { inherit lib; });
pipeTo = pipef: self (c: (f c) // { inherit pipef; });
leafs = self (c: (f c) // { pipef = (i: i); });
withLib = lib: mergeAttrs { inherit lib; };
pipeTo = pipef: mergeAttrs { inherit pipef; };
leafs = mergeAttrs { pipef = (i: i); };

# Applies empty (for already path-configured trees)
result = (self f) [ ];
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