diff --git a/nixos/modules/services/networking/ircd-hybrid/builder.sh b/nixos/modules/services/networking/ircd-hybrid/builder.sh
index d9d2e4264dfd..07a3788abf7d 100644
--- a/nixos/modules/services/networking/ircd-hybrid/builder.sh
+++ b/nixos/modules/services/networking/ircd-hybrid/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 doSub() {
diff --git a/nixos/modules/services/web-servers/jboss/builder.sh b/nixos/modules/services/web-servers/jboss/builder.sh
index ac573089cd5a..8c49b87db060 100644
--- a/nixos/modules/services/web-servers/jboss/builder.sh
+++ b/nixos/modules/services/web-servers/jboss/builder.sh
@@ -1,6 +1,6 @@
 set -e
 
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 mkdir -p $out/bin
diff --git a/pkgs/applications/misc/adobe-reader/builder.sh b/pkgs/applications/misc/adobe-reader/builder.sh
index 6047c0826430..4291da80576d 100644
--- a/pkgs/applications/misc/adobe-reader/builder.sh
+++ b/pkgs/applications/misc/adobe-reader/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 echo "unpacking $src..."
diff --git a/pkgs/build-support/binary-cache/default.nix b/pkgs/build-support/binary-cache/default.nix
index 27f9ad962899..8c610c512276 100644
--- a/pkgs/build-support/binary-cache/default.nix
+++ b/pkgs/build-support/binary-cache/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPackages }:
+{ lib, stdenv, coreutils, jq, python3, nix, xz }:
 
 # This function is for creating a flat-file binary cache, i.e. the kind created by
 # nix copy --to file:///some/path and usable as a substituter (with the file:// prefix).
@@ -19,15 +19,10 @@ stdenv.mkDerivation {
 
   preferLocalBuild = true;
 
-  PATH = lib.makeBinPath (with buildPackages; [ coreutils jq python3 nix xz ]);
+  nativeBuildInputs = [ coreutils jq python3 nix xz ];
 
-  builder = builtins.toFile "builder" ''
-    . .attrs.sh
-
-    export out=''${outputs[out]}
-
-    mkdir $out
-    mkdir $out/nar
+  buildCommand = ''
+    mkdir -p $out/nar
 
     python ${./make-binary-cache.py}
 
diff --git a/pkgs/build-support/binary-cache/make-binary-cache.py b/pkgs/build-support/binary-cache/make-binary-cache.py
index 16dd8a7e96bc..589d005562b1 100644
--- a/pkgs/build-support/binary-cache/make-binary-cache.py
+++ b/pkgs/build-support/binary-cache/make-binary-cache.py
@@ -3,7 +3,7 @@ import json
 import os
 import subprocess
 
-with open(".attrs.json", "r") as f:
+with open(os.environ["NIX_ATTRS_JSON_FILE"], "r") as f:
   closures = json.load(f)["closure"]
 
 os.chdir(os.environ["out"])
diff --git a/pkgs/build-support/closure-info.nix b/pkgs/build-support/closure-info.nix
index 6b3ff6fd62b0..f6c31bd786bb 100644
--- a/pkgs/build-support/closure-info.nix
+++ b/pkgs/build-support/closure-info.nix
@@ -4,7 +4,7 @@
 # "nix-store --load-db" and "nix-store --register-validity
 # --hash-given".
 
-{ stdenv, buildPackages }:
+{ stdenv, coreutils, jq }:
 
 { rootPaths }:
 
@@ -19,18 +19,16 @@ stdenv.mkDerivation {
 
   preferLocalBuild = true;
 
-  PATH = "${buildPackages.coreutils}/bin:${buildPackages.jq}/bin";
+  nativeBuildInputs = [ coreutils jq ];
 
-  builder = builtins.toFile "builder"
+  buildCommand =
     ''
-      . .attrs.sh
-
       out=''${outputs[out]}
 
       mkdir $out
 
-      jq -r ".closure | map(.narSize) | add" < .attrs.json > $out/total-nar-size
-      jq -r '.closure | map([.path, .narHash, .narSize, "", (.references | length)] + .references) | add | map("\(.)\n") | add' < .attrs.json | head -n -1 > $out/registration
-      jq -r .closure[].path < .attrs.json > $out/store-paths
+      jq -r ".closure | map(.narSize) | add" < "$NIX_ATTRS_JSON_FILE" > $out/total-nar-size
+      jq -r '.closure | map([.path, .narHash, .narSize, "", (.references | length)] + .references) | add | map("\(.)\n") | add' < "$NIX_ATTRS_JSON_FILE" | head -n -1 > $out/registration
+      jq -r '.closure[].path' < "$NIX_ATTRS_JSON_FILE" > $out/store-paths
     '';
 }
diff --git a/pkgs/build-support/fetchbzr/builder.sh b/pkgs/build-support/fetchbzr/builder.sh
index 991864719a07..4515e0e82f49 100644
--- a/pkgs/build-support/fetchbzr/builder.sh
+++ b/pkgs/build-support/fetchbzr/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source "$stdenv/setup"
 
 echo "exporting \`$url' (revision $rev) into \`$out'"
diff --git a/pkgs/build-support/fetchcvs/builder.sh b/pkgs/build-support/fetchcvs/builder.sh
index 4b49e9676ec0..7e4dde4a64c8 100644
--- a/pkgs/build-support/fetchcvs/builder.sh
+++ b/pkgs/build-support/fetchcvs/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 (echo "#!$SHELL"; \
diff --git a/pkgs/build-support/fetchdarcs/builder.sh b/pkgs/build-support/fetchdarcs/builder.sh
index 75b9066dba6f..39838db255a6 100644
--- a/pkgs/build-support/fetchdarcs/builder.sh
+++ b/pkgs/build-support/fetchdarcs/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 tagtext=""
diff --git a/pkgs/build-support/fetchdocker/fetchdocker-builder.sh b/pkgs/build-support/fetchdocker/fetchdocker-builder.sh
index 4eb70f672d48..489914a2a8b4 100644
--- a/pkgs/build-support/fetchdocker/fetchdocker-builder.sh
+++ b/pkgs/build-support/fetchdocker/fetchdocker-builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source "${stdenv}/setup"
 echo "exporting ${repository}/${imageName} (tag: ${tag}) into ${out}"
 mkdir -p "${out}"
diff --git a/pkgs/build-support/fetchfossil/builder.sh b/pkgs/build-support/fetchfossil/builder.sh
index 36b758ab574e..fe828d0ada9d 100644
--- a/pkgs/build-support/fetchfossil/builder.sh
+++ b/pkgs/build-support/fetchfossil/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 echo "Cloning Fossil $url [$rev] into $out"
 
diff --git a/pkgs/build-support/fetchgit/builder.sh b/pkgs/build-support/fetchgit/builder.sh
index 77f6381b09ab..95176beea8c1 100644
--- a/pkgs/build-support/fetchgit/builder.sh
+++ b/pkgs/build-support/fetchgit/builder.sh
@@ -3,7 +3,7 @@
 # - revision specified and remote has a HEAD
 # - revision specified and remote without HEAD
 #
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 echo "exporting $url (rev $rev) into $out"
diff --git a/pkgs/build-support/fetchhg/builder.sh b/pkgs/build-support/fetchhg/builder.sh
index 1ce294757713..20dfde4b10d4 100644
--- a/pkgs/build-support/fetchhg/builder.sh
+++ b/pkgs/build-support/fetchhg/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 echo "getting $url${rev:+ ($rev)} into $out"
 
diff --git a/pkgs/build-support/fetchipfs/builder.sh b/pkgs/build-support/fetchipfs/builder.sh
index ca77962b5384..1ddd111b1518 100644
--- a/pkgs/build-support/fetchipfs/builder.sh
+++ b/pkgs/build-support/fetchipfs/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 # Curl flags to handle redirects, not use EPSV, handle cookies for
diff --git a/pkgs/build-support/fetchmtn/builder.sh b/pkgs/build-support/fetchmtn/builder.sh
index 1aabd7949ee1..de929fad55a9 100644
--- a/pkgs/build-support/fetchmtn/builder.sh
+++ b/pkgs/build-support/fetchmtn/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 set -x
diff --git a/pkgs/build-support/fetchsvn/builder.sh b/pkgs/build-support/fetchsvn/builder.sh
index aa4d049aba43..e187747f14e6 100644
--- a/pkgs/build-support/fetchsvn/builder.sh
+++ b/pkgs/build-support/fetchsvn/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 echo "exporting $url (r$rev) into $out"
diff --git a/pkgs/build-support/fetchsvnssh/builder.sh b/pkgs/build-support/fetchsvnssh/builder.sh
index 5782151524f7..e553446346de 100644
--- a/pkgs/build-support/fetchsvnssh/builder.sh
+++ b/pkgs/build-support/fetchsvnssh/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 echo "exporting $url (r$rev) into $out"
diff --git a/pkgs/build-support/fetchurl/builder.sh b/pkgs/build-support/fetchurl/builder.sh
index e8eaba934858..a82728ef1025 100644
--- a/pkgs/build-support/fetchurl/builder.sh
+++ b/pkgs/build-support/fetchurl/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 source $mirrorsFile
diff --git a/pkgs/build-support/references-by-popularity/default.nix b/pkgs/build-support/references-by-popularity/default.nix
index dfc25275f34c..2171c622f000 100644
--- a/pkgs/build-support/references-by-popularity/default.nix
+++ b/pkgs/build-support/references-by-popularity/default.nix
@@ -6,11 +6,8 @@ path: runCommand "closure-paths"
   exportReferencesGraph.graph = path;
   __structuredAttrs = true;
   preferLocalBuild = true;
-  PATH = "${coreutils}/bin:${python3}/bin";
-  builder = builtins.toFile "builder"
-    ''
-      . .attrs.sh
-      python3 ${./closure-graph.py} .attrs.json graph > ''${outputs[out]}
-    '';
-  }
-  ""
+  nativeBuildInputs = [ coreutils python3 ];
+}
+''
+  python3 ${./closure-graph.py} "$NIX_ATTRS_JSON_FILE" graph > ''${outputs[out]}
+''
diff --git a/pkgs/desktops/gnustep/make/builder.sh b/pkgs/desktops/gnustep/make/builder.sh
index 736635ab5026..79ead3f7b729 100644
--- a/pkgs/desktops/gnustep/make/builder.sh
+++ b/pkgs/desktops/gnustep/make/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 providedPreConfigure="$preConfigure";
diff --git a/pkgs/development/compilers/aspectj/builder.sh b/pkgs/development/compilers/aspectj/builder.sh
index 7ea0a40d3748..31ec97942e52 100755
--- a/pkgs/development/compilers/aspectj/builder.sh
+++ b/pkgs/development/compilers/aspectj/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 export JAVA_HOME=$jre
diff --git a/pkgs/development/compilers/chicken/4/fetchegg/builder.sh b/pkgs/development/compilers/chicken/4/fetchegg/builder.sh
index cb56eabc5d78..78535382a7ca 100644
--- a/pkgs/development/compilers/chicken/4/fetchegg/builder.sh
+++ b/pkgs/development/compilers/chicken/4/fetchegg/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 echo "exporting egg ${eggName} (version $version) into $out"
diff --git a/pkgs/development/compilers/fpc/binary-builder-darwin.sh b/pkgs/development/compilers/fpc/binary-builder-darwin.sh
index 39db0518281d..8a8600f1f639 100755
--- a/pkgs/development/compilers/fpc/binary-builder-darwin.sh
+++ b/pkgs/development/compilers/fpc/binary-builder-darwin.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 pkgdir=$(pwd)/pkg
diff --git a/pkgs/development/compilers/fpc/binary-builder.sh b/pkgs/development/compilers/fpc/binary-builder.sh
index c471378c275f..568c3094107a 100755
--- a/pkgs/development/compilers/fpc/binary-builder.sh
+++ b/pkgs/development/compilers/fpc/binary-builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 tar xf $src
diff --git a/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh b/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh
index 47459664af0a..4eef8acb0693 100644
--- a/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh
+++ b/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh
@@ -1,5 +1,5 @@
 # -*- shell-script -*-
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 function extract
diff --git a/pkgs/development/compilers/ocaml/builder.sh b/pkgs/development/compilers/ocaml/builder.sh
index 88acc0654cf2..85b26848f4e4 100644
--- a/pkgs/development/compilers/ocaml/builder.sh
+++ b/pkgs/development/compilers/ocaml/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 configureFlags="-prefix $out $configureFlags"
diff --git a/pkgs/development/libraries/glibc/locales-builder.sh b/pkgs/development/libraries/glibc/locales-builder.sh
index d91f936c937b..27894b09b91c 100644
--- a/pkgs/development/libraries/glibc/locales-builder.sh
+++ b/pkgs/development/libraries/glibc/locales-builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 # Glibc cannot have itself in its RPATH.
 export NIX_NO_SELF_RPATH=1
 
diff --git a/pkgs/development/libraries/gtk-sharp/builder.sh b/pkgs/development/libraries/gtk-sharp/builder.sh
index 73914495d6d4..45e640e2a708 100644
--- a/pkgs/development/libraries/gtk-sharp/builder.sh
+++ b/pkgs/development/libraries/gtk-sharp/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 genericBuild
diff --git a/pkgs/development/libraries/wtk/builder.sh b/pkgs/development/libraries/wtk/builder.sh
index c3ad173b0933..ca5157c6d71a 100644
--- a/pkgs/development/libraries/wtk/builder.sh
+++ b/pkgs/development/libraries/wtk/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 mkdir unzipped
diff --git a/pkgs/development/perl-modules/generic/builder.sh b/pkgs/development/perl-modules/generic/builder.sh
index 110094ad8a49..4da9f7a98212 100644
--- a/pkgs/development/perl-modules/generic/builder.sh
+++ b/pkgs/development/perl-modules/generic/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 PERL5LIB="$PERL5LIB${PERL5LIB:+:}$out/lib/perl5/site_perl"
diff --git a/pkgs/development/tools/build-managers/boot/builder.sh b/pkgs/development/tools/build-managers/boot/builder.sh
index e007cbac9582..4506e3f0f861 100644
--- a/pkgs/development/tools/build-managers/boot/builder.sh
+++ b/pkgs/development/tools/build-managers/boot/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 boot_bin=$out/bin/boot
diff --git a/pkgs/development/tools/misc/automake/builder.sh b/pkgs/development/tools/misc/automake/builder.sh
index 0cb1d5d61e33..b08e7251e9e2 100644
--- a/pkgs/development/tools/misc/automake/builder.sh
+++ b/pkgs/development/tools/misc/automake/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 # Wrap the given `aclocal' program, appending extra `-I' flags
diff --git a/pkgs/development/tools/parsing/antlr/builder.sh b/pkgs/development/tools/parsing/antlr/builder.sh
index 55259b932124..c1d20845e6bf 100644
--- a/pkgs/development/tools/parsing/antlr/builder.sh
+++ b/pkgs/development/tools/parsing/antlr/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 tar zxvf $src
diff --git a/pkgs/misc/cups/drivers/samsung/4.00.39/builder.sh b/pkgs/misc/cups/drivers/samsung/4.00.39/builder.sh
index bdb522744182..829bc6509e06 100644
--- a/pkgs/misc/cups/drivers/samsung/4.00.39/builder.sh
+++ b/pkgs/misc/cups/drivers/samsung/4.00.39/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 arch=$(uname -m)
diff --git a/pkgs/os-specific/linux/nvidia-x11/builder.sh b/pkgs/os-specific/linux/nvidia-x11/builder.sh
index b7824f209776..fbb116ab42ad 100755
--- a/pkgs/os-specific/linux/nvidia-x11/builder.sh
+++ b/pkgs/os-specific/linux/nvidia-x11/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 unpackManually() {
diff --git a/pkgs/os-specific/linux/opengl/xorg-sys/builder.sh b/pkgs/os-specific/linux/opengl/xorg-sys/builder.sh
index 34f9b1579455..ed2c60da2612 100644
--- a/pkgs/os-specific/linux/opengl/xorg-sys/builder.sh
+++ b/pkgs/os-specific/linux/opengl/xorg-sys/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 mkdir -p $out/lib
diff --git a/pkgs/servers/http/tomcat/axis2/builder.sh b/pkgs/servers/http/tomcat/axis2/builder.sh
index d334ab6f927f..de8e225456b4 100644
--- a/pkgs/servers/http/tomcat/axis2/builder.sh
+++ b/pkgs/servers/http/tomcat/axis2/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 source $stdenv/setup
 
 unzip $src
diff --git a/pkgs/servers/x11/xorg/builder.sh b/pkgs/servers/x11/xorg/builder.sh
index a9c607ae35ea..833acf43a5b0 100644
--- a/pkgs/servers/x11/xorg/builder.sh
+++ b/pkgs/servers/x11/xorg/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 # This is the builder for all X.org components.
 source $stdenv/setup
 
diff --git a/pkgs/stdenv/generic/default-builder.sh b/pkgs/stdenv/generic/default-builder.sh
index 8c6fec7873b6..d49fb8aa57fc 100644
--- a/pkgs/stdenv/generic/default-builder.sh
+++ b/pkgs/stdenv/generic/default-builder.sh
@@ -1,6 +1,4 @@
-if [ -f .attrs.sh ]; then
-    . .attrs.sh
-fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 
 source $stdenv/setup
 genericBuild
diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index ad9857fc9d61..419a66261e61 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -16,29 +16,15 @@ if (( "${NIX_DEBUG:-0}" >= 6 )); then
     set -x
 fi
 
-if [ -f .attrs.sh ]; then
+if [ -f .attrs.sh ] || [[ -n "${NIX_ATTRS_JSON_FILE:-}" ]]; then
     __structuredAttrs=1
     echo "structuredAttrs is enabled"
-else
-    __structuredAttrs=
-fi
 
-if [ -n "$__structuredAttrs" ]; then
     for outputName in "${!outputs[@]}"; do
         # ex: out=/nix/store/...
         export "$outputName=${outputs[$outputName]}"
     done
 
-    # Before Nix 2.4, $NIX_ATTRS_*_FILE was named differently:
-    # https://github.com/NixOS/nix/commit/27ce722
-    if [[ -n "${ATTRS_JSON_FILE:-}" ]]; then
-        export NIX_ATTRS_JSON_FILE="$ATTRS_JSON_FILE"
-    fi
-
-    if [[ -n "${ATTRS_SH_FILE:-}" ]]; then
-        export NIX_ATTRS_SH_FILE="$ATTRS_SH_FILE"
-    fi
-
     # $NIX_ATTRS_JSON_FILE pointed to the wrong location in sandbox
     # https://github.com/NixOS/nix/issues/6736; please keep around until the
     # fix reaches *every patch version* that's >= lib/minver.nix
@@ -49,6 +35,7 @@ if [ -n "$__structuredAttrs" ]; then
         export NIX_ATTRS_SH_FILE="$NIX_BUILD_TOP/.attrs.sh"
     fi
 else
+    __structuredAttrs=
     : "${outputs:=out}"
 fi
 
diff --git a/pkgs/test/simple/builder.sh b/pkgs/test/simple/builder.sh
index 908faec3c388..0b09a109bead 100644
--- a/pkgs/test/simple/builder.sh
+++ b/pkgs/test/simple/builder.sh
@@ -1,4 +1,4 @@
-if [ -e .attrs.sh ]; then source .attrs.sh; fi
+if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
 set -x
 
 export NIX_DEBUG=1