diff --git a/lib/systems/doubles.nix b/lib/systems/doubles.nix
index 0168eb42f2f..ac1a199d80c 100644
--- a/lib/systems/doubles.nix
+++ b/lib/systems/doubles.nix
@@ -26,7 +26,7 @@ in rec {
   allBut = platforms: lists.filter (x: !(builtins.elem x platforms)) all;
   none = [];
 
-  arm     = filterDoubles predicates.isArm32;
+  arm     = filterDoubles predicates.isArm;
   i686    = filterDoubles predicates.isi686;
   mips    = filterDoubles predicates.isMips;
   x86_64  = filterDoubles predicates.isx86_64;
diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index b3971808a2b..05c1fe6fa54 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -66,7 +66,7 @@ let
     else if targetPlatform.system == "i686-linux"     then "${libc_lib}/lib/ld-linux.so.2"
     else if targetPlatform.system == "x86_64-linux"   then "${libc_lib}/lib/ld-linux-x86-64.so.2"
     # ARM with a wildcard, which can be "" or "-armhf".
-    else if targetPlatform.isArm32                    then "${libc_lib}/lib/ld-linux*.so.3"
+    else if targetPlatform.isArm                      then "${libc_lib}/lib/ld-linux*.so.3"
     else if targetPlatform.system == "aarch64-linux"  then "${libc_lib}/lib/ld-linux-aarch64.so.1"
     else if targetPlatform.system == "powerpc-linux"  then "${libc_lib}/lib/ld.so.1"
     else if targetPlatform.system == "mips64el-linux" then "${libc_lib}/lib/ld.so.1"
diff --git a/pkgs/build-support/gcc-wrapper-old/default.nix b/pkgs/build-support/gcc-wrapper-old/default.nix
index a37d94c36e0..8d28879fb06 100644
--- a/pkgs/build-support/gcc-wrapper-old/default.nix
+++ b/pkgs/build-support/gcc-wrapper-old/default.nix
@@ -92,7 +92,7 @@ stdenv.mkDerivation {
       (if targetPlatform.system == "i686-linux"     then "ld-linux.so.2" else
        if targetPlatform.system == "x86_64-linux"   then "ld-linux-x86-64.so.2" else
        # ARM with a wildcard, which can be "" or "-armhf".
-       if targetPlatform.isArm32                    then "ld-linux*.so.3" else
+       if targetPlatform.isArm                      then "ld-linux*.so.3" else
        if targetPlatform.system == "aarch64-linux"  then "ld-linux-aarch64.so.1" else
        if targetPlatform.system == "powerpc-linux"  then "ld.so.1" else
        if targetPlatform.system == "mips64el-linux" then "ld.so.1" else
diff --git a/pkgs/development/compilers/gcc/4.5/default.nix b/pkgs/development/compilers/gcc/4.5/default.nix
index 4c52f4447d5..ea54e9b84f3 100644
--- a/pkgs/development/compilers/gcc/4.5/default.nix
+++ b/pkgs/development/compilers/gcc/4.5/default.nix
@@ -233,7 +233,7 @@ stdenv.mkDerivation ({
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/development/compilers/gcc/4.8/default.nix b/pkgs/development/compilers/gcc/4.8/default.nix
index 76fa0b66375..5b9d368c457 100644
--- a/pkgs/development/compilers/gcc/4.8/default.nix
+++ b/pkgs/development/compilers/gcc/4.8/default.nix
@@ -319,7 +319,7 @@ stdenv.mkDerivation ({
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/development/compilers/gcc/4.9/default.nix b/pkgs/development/compilers/gcc/4.9/default.nix
index 05bdcecb6a5..8990302eea2 100644
--- a/pkgs/development/compilers/gcc/4.9/default.nix
+++ b/pkgs/development/compilers/gcc/4.9/default.nix
@@ -319,7 +319,7 @@ stdenv.mkDerivation ({
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/development/compilers/gcc/5/default.nix b/pkgs/development/compilers/gcc/5/default.nix
index 90b10f2acbd..f593e00ccfd 100644
--- a/pkgs/development/compilers/gcc/5/default.nix
+++ b/pkgs/development/compilers/gcc/5/default.nix
@@ -336,7 +336,7 @@ stdenv.mkDerivation ({
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/development/compilers/gcc/6/default.nix b/pkgs/development/compilers/gcc/6/default.nix
index bc408e28f58..25940420e9a 100644
--- a/pkgs/development/compilers/gcc/6/default.nix
+++ b/pkgs/development/compilers/gcc/6/default.nix
@@ -328,7 +328,7 @@ stdenv.mkDerivation ({
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/development/compilers/gcc/7/default.nix b/pkgs/development/compilers/gcc/7/default.nix
index 78b499f096d..87d5c751e85 100644
--- a/pkgs/development/compilers/gcc/7/default.nix
+++ b/pkgs/development/compilers/gcc/7/default.nix
@@ -330,7 +330,7 @@ stdenv.mkDerivation ({
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/development/compilers/gcc/snapshot/default.nix b/pkgs/development/compilers/gcc/snapshot/default.nix
index c7f7b9d970a..46fcc53b3c4 100644
--- a/pkgs/development/compilers/gcc/snapshot/default.nix
+++ b/pkgs/development/compilers/gcc/snapshot/default.nix
@@ -317,7 +317,7 @@ stdenv.mkDerivation ({
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/development/tools/misc/binutils/default.nix b/pkgs/development/tools/misc/binutils/default.nix
index a528cb0bba9..549503f0013 100644
--- a/pkgs/development/tools/misc/binutils/default.nix
+++ b/pkgs/development/tools/misc/binutils/default.nix
@@ -86,7 +86,7 @@ stdenv.mkDerivation rec {
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms =
     # TODO(@Ericson2314): Figure out what's going wrong with Arm
-    if hostPlatform == targetPlatform && targetPlatform.isArm32
+    if hostPlatform == targetPlatform && targetPlatform.isArm
     then []
     else [ "build" "host" ] ++ stdenv.lib.optional (targetPlatform != hostPlatform) "target";
 
diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index 17bf1f8b428..31de28fdc0c 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -104,9 +104,7 @@ let
       # Utility flags to test the type of platform.
       inherit (hostPlatform)
         isDarwin isLinux isSunOS isHurd isCygwin isFreeBSD isOpenBSD
-        isi686 isx86_64 is64bit isMips isBigEndian;
-      isArm = hostPlatform.isArm32;
-      isAarch64 = hostPlatform.isArm64;
+        isi686 isx86_64 is64bit isArm isAarch64 isMips isBigEndian;
 
       # Whether we should run paxctl to pax-mark binaries.
       needsPax = isLinux;