depot/maintainers/scripts/find-tarballs.nix
Luke Granger-Brown 57725ef3ec Squashed 'third_party/nixpkgs/' content from commit 76612b17c0ce
git-subtree-dir: third_party/nixpkgs
git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
2024-11-10 23:59:47 +00:00

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# This expression returns a list of all fetchurl calls used by expr.
{ expr, lib ? import ../../lib }:
let
inherit (lib)
addErrorContext
attrNames
concatLists
const
filter
genericClosure
isAttrs
isDerivation
isList
mapAttrsToList
optional
optionals
;
root = expr;
uniqueFiles = map (x: x.file) (genericClosure {
startSet = map (file: { key = with file; (if type == null then "" else type + "+") + hash; inherit file; }) files;
operator = const [ ];
});
files = map (drv: { urls = drv.urls or [ drv.url ]; hash = drv.outputHash; isPatch = (drv?postFetch && drv.postFetch != ""); type = drv.outputHashAlgo; name = drv.name; }) fetchurlDependencies;
fetchurlDependencies =
filter
(drv: drv.outputHash or "" != "" && drv.outputHashMode or "flat" == "flat"
&& (drv ? url || drv ? urls))
dependencies;
dependencies = map (x: x.value) (genericClosure {
startSet = map keyDrv (derivationsIn' root);
operator = { key, value }: map keyDrv (immediateDependenciesOf value);
});
derivationsIn' = x:
if !canEval x then []
else if isDerivation x then optional (canEval x.drvPath) x
else if isList x then concatLists (map derivationsIn' x)
else if isAttrs x then concatLists (mapAttrsToList (n: v: addErrorContext "while finding tarballs in '${n}':" (derivationsIn' v)) x)
else [ ];
keyDrv = drv: if canEval drv.drvPath then { key = drv.drvPath; value = drv; } else { };
immediateDependenciesOf = drv:
concatLists (mapAttrsToList (n: v: derivationsIn v) (removeAttrs drv (["meta" "passthru"] ++ optionals (drv?passthru) (attrNames drv.passthru))));
derivationsIn = x:
if !canEval x then []
else if isDerivation x then optional (canEval x.drvPath) x
else if isList x then concatLists (map derivationsIn x)
else [ ];
canEval = val: (builtins.tryEval val).success;
in uniqueFiles