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fetchurl: Ensure that ‘urls’ is a list

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This commit is contained in:
Eelco Dolstra 2014-02-19 13:36:39 +01:00
parent 7a51e17775
commit 83ca2c272a
1 changed files with 1 additions and 0 deletions
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pkgs/build-support/fetchurl/default.nix
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@ -66,6 +66,7 @@ in
showURLs ? false showURLs ? false
}: }:
assert builtins.isList urls;
assert urls != [] -> url == ""; assert urls != [] -> url == "";
assert url != "" -> urls == []; assert url != "" -> urls == [];