forked from mirrors/nixpkgs
46 lines
1.5 KiB
Nix
46 lines
1.5 KiB
Nix
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# This expression returns a list of all fetchurl calls used by all
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# packages reachable from release.nix.
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with import ../.. { };
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with lib;
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let
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root = removeAttrs (import ../../pkgs/top-level/release.nix { }) [ "tarball" "unstable" ];
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uniqueUrls = map (x: x.file) (genericClosure {
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startSet = map (file: { key = file.url; inherit file; }) urls;
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operator = const [ ];
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});
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urls = map (drv: { url = head drv.urls; hash = drv.outputHash; type = drv.outputHashAlgo; }) fetchurlDependencies;
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fetchurlDependencies = filter (drv: drv.outputHash or "" != "" && drv ? urls) dependencies;
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dependencies = map (x: x.value) (genericClosure {
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startSet = map keyDrv (derivationsIn' root);
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operator = { key, value }: map keyDrv (immediateDependenciesOf value);
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});
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derivationsIn' = x:
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if !canEval x then []
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else if isDerivation x then optional (canEval x.drvPath) x
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else if isList x then concatLists (map derivationsIn' x)
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else if isAttrs x then concatLists (mapAttrsToList (n: v: derivationsIn' v) x)
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else [ ];
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keyDrv = drv: if canEval drv.drvPath then { key = drv.drvPath; value = drv; } else { };
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immediateDependenciesOf = drv:
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concatLists (mapAttrsToList (n: v: derivationsIn v) (removeAttrs drv ["meta" "passthru"]));
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derivationsIn = x:
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if !canEval x then []
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else if isDerivation x then optional (canEval x.drvPath) x
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else if isList x then concatLists (map derivationsIn x)
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else [ ];
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canEval = val: (builtins.tryEval val).success;
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in uniqueUrls
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