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/*
Usage:
You define you custom builder script by adding all build steps to a list.
for example:
builder = writeScript "fsg-4.4-builder"
(textClosure [doUnpack addInputs preBuild doMake installPhase doForceShare]);
a step is defined by noDepEntry, FullDepEntry or PackEntry.
To ensure that prerequisite are met those are added before the task itself by
textClosureDupList. Duplicated items are removed again.
See trace/nixpkgs/trunk/pkgs/top-level/builder-defs.nix for some predefined build steps
*/
args:
with args;
with lib;
let
inherit (builtins)
head tail isList;
in
rec {
/*
let shelllib = rec {
a= {
text = "aaaa";
deps = [b c];
};
b = {
text = "b";
};
c = {
text = "c";
deps = [];
};
};
in
[textClosure [shelllib.a]
textclosure shelllib.a];
*/
textClosureDupList = arg:
(
if isList arg then
textClosureDupList {text = ""; deps = arg;}
else
(concatLists (map textClosureDupList arg.deps)) ++ [arg]
);
textClosureList = arg:
(map (x : x.text)
(uniqList {inputList = textClosureDupList arg;}));
textClosure = arg: concatStringsSep "\n" (textClosureList arg);
textClosureMap = f: arg: concatStringsSep "\n" (map f (textClosureList arg));
noDepEntry = text : {inherit text;deps = [];};
FullDepEntry = text : deps: {inherit text deps;};
PackEntry = deps: {inherit deps; text="";};
}
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