diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5a52289d7e2b..4f38ab19a0d7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -223,39 +223,54 @@ in
 
   fetchzip = callPackage ../build-support/fetchzip { };
 
-  fetchFromGitHub = { owner, repo, rev, sha256, name ? "${repo}-${rev}-src" }: fetchzip {
-    inherit name sha256;
+  fetchFromGitHub = {
+    owner, repo, rev, name ? "${repo}-${rev}-src",
+    ... # For hash agility
+  }@args: fetchzip ({
+    inherit name;
     url = "https://github.com/${owner}/${repo}/archive/${rev}.tar.gz";
     meta.homepage = "https://github.com/${owner}/${repo}/";
-  } // { inherit rev; };
+  } // removeAttrs args [ "owner" "repo" "rev" ]) // { inherit rev; };
 
-  fetchFromBitbucket = { owner, repo, rev, sha256, name ? "${repo}-${rev}-src" }: fetchzip {
-    inherit name sha256;
+  fetchFromBitbucket = {
+    owner, repo, rev, name ? "${repo}-${rev}-src",
+    ... # For hash agility
+  }@args: fetchzip ({
+    inherit name;
     url = "https://bitbucket.org/${owner}/${repo}/get/${rev}.tar.gz";
     meta.homepage = "https://bitbucket.org/${owner}/${repo}/";
     extraPostFetch = ''rm -f "$out"/.hg_archival.txt''; # impure file; see #12002
-  };
+  } // removeAttrs args [ "owner" "repo" "rev" ]) // { inherit rev; };
 
   # cgit example, snapshot support is optional in cgit
-  fetchFromSavannah = { repo, rev, sha256, name ? "${repo}-${rev}-src" }: fetchzip {
-    inherit name sha256;
+  fetchFromSavannah = {
+    repo, rev, name ? "${repo}-${rev}-src",
+    ... # For hash agility
+  }@args: fetchzip ({
+    inherit name;
     url = "http://git.savannah.gnu.org/cgit/${repo}.git/snapshot/${repo}-${rev}.tar.gz";
     meta.homepage = "http://git.savannah.gnu.org/cgit/${repo}.git/";
-  };
+  } // removeAttrs args [ "repo" "rev" ]) // { inherit rev; };
 
   # gitlab example
-  fetchFromGitLab = { owner, repo, rev, sha256, name ? "${repo}-${rev}-src" }: fetchzip {
-    inherit name sha256;
+  fetchFromGitLab = {
+    owner, repo, rev, name ? "${repo}-${rev}-src",
+    ... # For hash agility
+  }@args: fetchzip ({
+    inherit name;
     url = "https://gitlab.com/${owner}/${repo}/repository/archive.tar.gz?ref=${rev}";
     meta.homepage = "https://gitlab.com/${owner}/${repo}/";
-  };
+  } // removeAttrs args [ "owner" "repo" "rev" ]) // { inherit rev; };
 
   # gitweb example, snapshot support is optional in gitweb
-  fetchFromRepoOrCz = { repo, rev, sha256, name ? "${repo}-${rev}-src" }: fetchzip {
-    inherit name sha256;
+  fetchFromRepoOrCz = {
+    repo, rev, name ? "${repo}-${rev}-src",
+    ... # For hash agility
+  }@args: fetchzip ({
+    inherit name;
     url = "http://repo.or.cz/${repo}.git/snapshot/${rev}.tar.gz";
     meta.homepage = "http://repo.or.cz/${repo}.git/";
-  };
+  } // removeAttrs args [ "repo" "rev" ]) // { inherit rev; };
 
   fetchNuGet = callPackage ../build-support/fetchnuget { };
   buildDotnetPackage = callPackage ../build-support/build-dotnet-package { };