docs: updated dependencies for docs build

docs/default.nix

@@ -1,134 +1,144 b''
 { system ? builtins.currentSystem
 }:
 
 let
 
   pkgs = import <nixpkgs> { inherit system; };
 
   inherit (pkgs) fetchurl fetchgit;
 
   buildPythonPackage = pkgs.python27Packages.buildPythonPackage;
   python = pkgs.python27Packages.python;
 
   Jinja2 = buildPythonPackage rec {
     name = "Jinja2-2.7.3";
     src = fetchurl {
       url = "http://pypi.python.org/packages/source/J/Jinja2/${name}.tar.gz";
       md5 = "b9dffd2f3b43d673802fe857c8445b1a";
     };
     propagatedBuildInputs = [ MarkupSafe ];
   };
 
   MarkupSafe = buildPythonPackage rec {
     name = "MarkupSafe-0.23";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/M/MarkupSafe/${name}.tar.gz";
       md5 = "f5ab3deee4c37cd6a922fb81e730da6e";
     };
   };
 
   Pygments = buildPythonPackage rec {
-    name = "Pygments-2.0.2";
+    name = "Pygments-2.1.3";
+    doCheck = false;
     src = fetchurl {
-      url = "https://pypi.python.org/packages/source/P/Pygments/${name}.tar.gz";
-      md5 = "238587a1370d62405edabd0794b3ec4a";
+      url = "https://pypi.python.org/packages/b8/67/ab177979be1c81bc99c8d0592ef22d547e70bb4c6815c383286ed5dec504/Pygments-2.1.3.tar.gz";
+      md5 = "ed3fba2467c8afcda4d317e4ef2c6150";
     };
   };
 
   alabaster = buildPythonPackage rec {
     name = "alabaster-0.7.3";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/a/alabaster/${name}.tar.gz";
       md5 = "67428d1383fd833f1282fed5deba0898";
     };
   };
 
   six = buildPythonPackage rec {
     name = "six-1.9.0";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/s/six/${name}.tar.gz";
       md5 = "476881ef4012262dfc8adc645ee786c4";
     };
   };
 
   snowballstemmer = buildPythonPackage rec {
     name = "snowballstemmer-1.2.0";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/s/snowballstemmer/${name}.tar.gz";
       md5 = "51f2ef829db8129dd0f2354f0b209970";
     };
   };
 
   pytz = buildPythonPackage rec {
     name = "pytz-2015.2";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/p/pytz/${name}.tar.gz";
       md5 = "08440d994cfbbf13d3343362cc3173f7";
     };
   };
 
   babel = buildPythonPackage rec {
     name = "Babel-1.3";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/B/Babel/${name}.tar.gz";
       md5 = "5264ceb02717843cbc9ffce8e6e06bdb";
     };
     propagatedBuildInputs = [
     pytz
     ];
   };
 
-  Sphinx = buildPythonPackage (rec {
-    name = "Sphinx-1.3.1";
+  imagesize = buildPythonPackage rec {
+    name = "imagesize-0.7.1";
     src = fetchurl {
-      url = "http://pypi.python.org/packages/source/S/Sphinx/${name}.tar.gz";
-      md5 = "8786a194acf9673464c5455b11fd4332";
+      url = "https://pypi.python.org/packages/53/72/6c6f1e787d9cab2cc733cf042f125abec07209a58308831c9f292504e826/${name}.tar.gz";
+      md5 = "976148283286a6ba5f69b0f81aef8052";
+    };
+  };
+
+  Sphinx = buildPythonPackage (rec {
+    name = "Sphinx-1.4.4";
+    src = fetchurl {
+      url = "https://pypi.python.org/packages/20/a2/72f44c84f6c4115e3fef58d36d657ec311d80196eab9fd5ec7bcde76143b/${name}.tar.gz";
+      md5 = "64ce2ec08d37ed56313a98232cbe2aee";
     };
     propagatedBuildInputs = [
       docutils
       Jinja2
       Pygments
       alabaster
       six
       snowballstemmer
       pytz
       babel
+      imagesize
 
       # TODO: johbo: Had to include it here so that can be imported
       sphinx_rtd_theme
     ];
   });
 
   docutils = buildPythonPackage rec {
     name = "docutils-0.12";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/d/docutils/${name}.tar.gz";
       md5 = "4622263b62c5c771c03502afa3157768";
     };
   };
 
   sphinx_rtd_theme = buildPythonPackage rec {
     name = "sphinx_rtd_theme-0.1.9";
     src = fetchurl {
       url = "https://pypi.python.org/packages/source/s/sphinx_rtd_theme/${name}.tar.gz";
       md5 = "86a25c8d47147c872e42dc84cc66f97b";
     };
 
     # Note: johbo: Sphinx needs this package and this package needs sphinx,
     # ignore the requirements file to solve this cycle.
     postPatch = ''
       rm requirements.txt
       touch requirements.txt
     '';
 
     # TODO: johbo: Tests would require sphinx and this creates recursion issues
     doCheck = false;
   };
 
 in python.buildEnv.override {
   inherit python;
   extraLibs = [
     Sphinx
     sphinx_rtd_theme
   ];
 }