From cd6033ba97d5694824f1dd169df929af67f00650 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niklas=20Hamb=C3=BCchen?= <mail@nh2.me>
Date: Mon, 12 Aug 2019 03:40:03 +0200
Subject: [PATCH] fetchurl: Make it overridable.

This provides a workaround for #66499, because this way
https://github.com/NixOS/nixpkgs/issues/66499#issuecomment-520277782

    self: super: {
      fetchurl = super.fetchurl.override (old: {
        curl = old.curl.override {
          gssSupport = false;
          # ...
        };
      });
    }

works as expected.
---
 pkgs/top-level/all-packages.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c4096f24b5f2d..a5b728c8e5522 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -273,7 +273,7 @@ in
   fetchhg = callPackage ../build-support/fetchhg { };
 
   # `fetchurl' downloads a file from the network.
-  fetchurl = import ../build-support/fetchurl {
+  fetchurl = makeOverridable (import ../build-support/fetchurl) {
     inherit lib stdenvNoCC;
     curl = buildPackages.curl.override rec {
       # break dependency cycles