diff --git a/pkgs/development/interpreters/python/cpython/2.7/default.nix b/pkgs/development/interpreters/python/cpython/2.7/default.nix
index df8e6ebf89f..2609c053d95 100644
--- a/pkgs/development/interpreters/python/cpython/2.7/default.nix
+++ b/pkgs/development/interpreters/python/cpython/2.7/default.nix
@@ -240,7 +240,10 @@ in stdenv.mkDerivation {
       '';
 
     passthru = let
-      pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;};
+      pythonPackages = callPackage ../../../../../top-level/python-packages.nix {
+        python = self;
+        overrides = packageOverrides;
+      };
     in rec {
       inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch ucsEncoding;
       executable = libPrefix;
diff --git a/pkgs/development/interpreters/python/cpython/3.4/default.nix b/pkgs/development/interpreters/python/cpython/3.4/default.nix
index c8a544c601a..18b90cd1da4 100644
--- a/pkgs/development/interpreters/python/cpython/3.4/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.4/default.nix
@@ -175,7 +175,10 @@ in stdenv.mkDerivation {
   '';
 
   passthru = let
-    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;};
+    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {
+      python = self;
+      overrides = packageOverrides;
+    };
   in rec {
     inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch;
     executable = "${libPrefix}m";
diff --git a/pkgs/development/interpreters/python/cpython/3.5/default.nix b/pkgs/development/interpreters/python/cpython/3.5/default.nix
index 2de337a8395..92c277aacd4 100644
--- a/pkgs/development/interpreters/python/cpython/3.5/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.5/default.nix
@@ -175,7 +175,10 @@ in stdenv.mkDerivation {
   '';
 
   passthru = let
-    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;};
+    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {
+      python = self;
+      overrides = packageOverrides;
+    };
   in rec {
     inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch;
     executable = "${libPrefix}m";
diff --git a/pkgs/development/interpreters/python/cpython/3.6/default.nix b/pkgs/development/interpreters/python/cpython/3.6/default.nix
index 6b9e26e99fc..5b5041f5bcd 100644
--- a/pkgs/development/interpreters/python/cpython/3.6/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.6/default.nix
@@ -196,7 +196,10 @@ in stdenv.mkDerivation {
   '';
 
   passthru = let
-    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;};
+    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {
+      python = self;
+      overrides = packageOverrides;
+    };
   in rec {
     inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch;
     executable = "${libPrefix}m";
diff --git a/pkgs/development/interpreters/python/cpython/3.7/default.nix b/pkgs/development/interpreters/python/cpython/3.7/default.nix
index adee8d594f1..be503d29b3a 100644
--- a/pkgs/development/interpreters/python/cpython/3.7/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.7/default.nix
@@ -159,7 +159,10 @@ in stdenv.mkDerivation {
   '';
 
   passthru = let
-    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {python=self; overrides=packageOverrides;};
+    pythonPackages = callPackage ../../../../../top-level/python-packages.nix {
+      python = self;
+      overrides = packageOverrides;
+    };
   in rec {
     inherit libPrefix sitePackages x11Support hasDistutilsCxxPatch;
     executable = "${libPrefix}m";