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nixpkgs/maintainers/scripts/find-tarballs.nix
Eelco Dolstra 567e002545 copy-tarballs: Use an S3 bucket for tarballs.nixos.org
Tarballs.nixos.org is now stored in an S3 bucket rather than an EBS
volume. Redirects are used to simulate symlinks.

The function find-tarballs.nix now filters out fetchzip, fetchpatch
and the like.
2015-12-10 16:07:07 +01:00

51 lines
1.6 KiB
Nix

# This expression returns a list of all fetchurl calls used by all
# packages reachable from release.nix.
with import ../.. { };
with lib;
{ expr ? removeAttrs (import ../../pkgs/top-level/release.nix { }) [ "tarball" "unstable" ] }:
let
root = expr;
uniqueUrls = map (x: x.file) (genericClosure {
startSet = map (file: { key = file.url; inherit file; }) urls;
operator = const [ ];
});
urls = map (drv: { url = head drv.urls; hash = drv.outputHash; type = drv.outputHashAlgo; }) fetchurlDependencies;
fetchurlDependencies =
filter
(drv: drv.outputHash or "" != "" && drv.outputHashMode == "flat" && drv.postFetch or "" == "" && 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: 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"]));
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 uniqueUrls