mypaint: format with nixpkgs-fmt

pkgs/applications/graphics/mypaint/default.nix

@@ -1,8 +1,22 @@
-{ stdenv, fetchFromGitHub, gtk3, intltool, json_c, lcms2, libpng, librsvg, gobject-introspection
-, gdk-pixbuf, pkgconfig, python2Packages, scons, swig, wrapGAppsHook }:
+{ stdenv
+, fetchFromGitHub
+, gtk3
+, intltool
+, json_c
+, lcms2
+, libpng
+, librsvg
+, gobject-introspection
+, gdk-pixbuf
+, pkgconfig
+, python2
+, scons
+, swig
+, wrapGAppsHook
+}:
 
 let
-  inherit (python2Packages) python pycairo pygobject3 numpy;
+  inherit (python2.pkgs) pycairo pygobject3 numpy;
 in stdenv.mkDerivation {
   pname = "mypaint";
   version = "1.2.1";
@@ -16,15 +30,29 @@ in stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [
-    intltool pkgconfig scons swig wrapGAppsHook
+    intltool
+    pkgconfig
+    scons
+    swig
+    wrapGAppsHook
     gobject-introspection # for setup hook
   ];
 
   buildInputs = [
-    gtk3 gdk-pixbuf json_c lcms2 libpng librsvg pycairo pygobject3 python
+    gtk3
+    gdk-pixbuf
+    json_c
+    lcms2
+    libpng
+    librsvg
+    pycairo
+    pygobject3
+    python2
   ];
 
-  propagatedBuildInputs = [ numpy ];
+  propagatedBuildInputs = [
+    numpy
+  ];
 
   postInstall = ''
     sed -i -e 's|/usr/bin/env python2.7|${python}/bin/python|' $out/bin/mypaint
@@ -36,7 +64,7 @@ in stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A graphics application for digital painters";
-    homepage = http://mypaint.org/;
+    homepage = "http://mypaint.org/";
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
     maintainers = with maintainers; [ goibhniu jtojnar ];