diff --git a/maintainers/scripts/eval-release.nix b/maintainers/scripts/eval-release.nix
index 3d4458699c74..836e4312c448 100644
--- a/maintainers/scripts/eval-release.nix
+++ b/maintainers/scripts/eval-release.nix
@@ -2,23 +2,30 @@
 # attribute with the expected `system' argument).  Too bad
 # nix-instantiate can't to do this.
 
-let
+with import ../../pkgs/lib;
 
-  lib = (import ../.. {}).lib;
+let
 
   rel = removeAttrs (import ../../pkgs/top-level/release.nix) [ "tarball" "xbursttools" ];
 
-  seqList = xs: res: lib.fold (x: xs: lib.seq x xs) res xs;
+  seqList = xs: res: fold (x: xs: seq x xs) res xs;
   
-  strictAttrs = as: seqList (lib.attrValues as) as;
+  strictAttrs = as: seqList (attrValues as) as;
 
   maybe = as: let y = builtins.tryEval (strictAttrs as); in if y.success then y.value else builtins.trace "FAIL" null;
 
-  call = attrs: lib.flip lib.mapAttrs attrs
-    (n: v: builtins.trace n (
+  call = attrs: flip mapAttrs attrs
+    (n: v: /* builtins.trace n */ (
       if builtins.isFunction v then maybe (v { system = "i686-linux"; })
       else if builtins.isAttrs v then call v
       else null
     ));
 
-in call rel
+  # Add the ‘recurseForDerivations’ attribute to ensure that
+  # nix-instantiate recurses into nested attribute sets.
+  recurse = attrs:
+    if isDerivation attrs
+    then attrs
+    else { recurseForDerivations = true; } // mapAttrs (n: v: recurse v) attrs;
+
+in recurse (call rel)
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2ef33a44e026..556f6afc04aa 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -177,7 +177,7 @@ let
 
   # Applying this to an attribute set will cause nix-env to look
   # inside the set for derivations.
-  recurseIntoAttrs = attrs: attrs // {recurseForDerivations = true;};
+  recurseIntoAttrs = attrs: attrs // { recurseForDerivations = true; };
 
   builderDefs = lib.composedArgsAndFun (import ../build-support/builder-defs/builder-defs.nix) {
     inherit stringsWithDeps lib stdenv writeScript