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e04cc18f18
Avoiding passthru itself was the right direction, but not a complete solution. Passthru attributes typically do not contain dependencies, but rather extra paths that are not relevant to the build itself. Whether we want to include all (passthru) test dependencies this way can be debated, but removing them makes this expression more robust.
50 lines
1.6 KiB
Nix
50 lines
1.6 KiB
Nix
# This expression returns a list of all fetchurl calls used by ‘expr’.
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with import ../.. { };
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with lib;
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{ expr }:
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let
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root = expr;
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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 or [ drv.url ]); hash = drv.outputHash; type = drv.outputHashAlgo; name = drv.name; }) fetchurlDependencies;
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fetchurlDependencies =
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filter
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(drv: drv.outputHash or "" != "" && drv.outputHashMode or "flat" == "flat"
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&& drv.postFetch or "" == "" && (drv ? url || drv ? urls))
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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: addErrorContext "while finding tarballs in '${n}':" (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"] ++ optionals (drv?passthru) (attrNames drv.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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