nixops: add patch to follow redirects in nixos-infect

pkgs/tools/package-management/nixops/default.nix

@@ -1,4 +1,4 @@
-{ callPackage, fetchurl }:
+{ callPackage, fetchurl, fetchpatch }:
 
 callPackage ./generic.nix (rec {
   version = "1.7";
@@ -6,4 +6,11 @@ callPackage ./generic.nix (rec {
     url = "https://nixos.org/releases/nixops/nixops-${version}/nixops-${version}.tar.bz2";
     sha256 = "091c0b5bca57d4aa20be20e826ec161efe3aec9c788fbbcf3806a734a517f0f3";
   };
+  patches = [
+    # follow redirect in nixos-infect. Remove with the next release.
+    (fetchpatch {
+      url = "https://github.com/NixOS/nixops/commit/fb6d4665e8efd858a215bbaaf079ec3f5ebc49b8.patch";
+      sha256 = "1hbhykl811zsqlaj3y5m9d8lfsal6ps6n5p16ah6lqy2s18ap9d0";
+    })
+  ];
 })

pkgs/tools/package-management/nixops/generic.nix

@@ -2,11 +2,12 @@
 # version args
 , src, version
 , meta ? {}
+, patches ? null
 }:
 
 python2Packages.buildPythonApplication {
   name = "nixops-${version}";
-  inherit version src;
+  inherit version src patches;
 
   buildInputs = [ libxslt ];