Add package 'pytrainer'.

pkgs/applications/misc/pytrainer/default.nix

···
+{ stdenv, fetchurl, pythonPackages, sqlite, gpsbabel }:
+
+let
+
+  # Pytrainer needs a matplotlib with GTK backend. Also ensure we are
+  # using the pygtk with glade support as needed by pytrainer.
+  matplotlibGtk = pythonPackages.matplotlib.override {
+    enableGtk2 = true;
+    pygtk = pythonPackages.pyGtkGlade;
+  };
+
+in
+
+pythonPackages.buildPythonPackage rec {
+  name = "pytrainer-${version}";
+  version = "1.10.0";
+
+  src = fetchurl {
+    url = "https://github.com/pytrainer/pytrainer/archive/v${version}.tar.gz";
+    sha256 = "0l42p630qhymgrcvxgry8chrpzcp6nr3d1vd7vhifh2npfq9l09y";
+  };
+
+  namePrefix = "";
+
+  # The existing use of pywebkitgtk shows raw HTML text instead of
+  # map. This patch solves the problems by showing the file from a
+  # string, which allows setting an explicit MIME type.
+  patches = [ ./pytrainer-webkit.patch ];
+
+  pythonPath = with pythonPackages; [
+    dateutil lxml matplotlibGtk pyGtkGlade pywebkitgtk
+    sqlalchemy sqlalchemy_migrate
+  ];
+
+  buildInputs = [gpsbabel sqlite] ++ pythonPath;
+
+  # This package contains no binaries to patch or strip.
+  dontPatchELF = true;
+  dontStrip = true;
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/pytrainer/pytrainer/wiki;
+    description = "Application for logging and graphing sporting excursions";
+    maintainers = [ maintainers.rycee ];
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+  };
+}

pkgs/applications/misc/pytrainer/pytrainer-webkit.patch

···
+diff -Nurp pytrainer-1.10.0-orig/pytrainer/extensions/mapviewer.py pytrainer-1.10.0/pytrainer/extensions/mapviewer.py
+--- pytrainer-1.10.0-orig/pytrainer/extensions/mapviewer.py	2013-03-31 12:28:29.000000000 +0200
++++ pytrainer-1.10.0/pytrainer/extensions/mapviewer.py	2014-12-22 11:44:44.367032126 +0100
+@@ -46,7 +46,9 @@ class MapViewer:
+ 		logging.debug(">>")
+ 		if htmlfile is None:
+ 			htmlfile = self.createErrorHtml()
+-		self.wkview.load_uri("file://%s" % (htmlfile))
++		content = open(htmlfile, 'r').read()
++		self.wkview.load_string(content, 'text/html', 'UTF-8', 'file:///')
++		#self.wkview.load_uri("file://%s" % (htmlfile))
+ 		#self.box.show_all()
+ 		logging.debug("<<")
+ 

pkgs/top-level/all-packages.nix

···
     inherit python libsexy pkgconfig libxml2 pygtk pango gtk glib;
   };
 
+  pytrainer = callPackage ../applications/misc/pytrainer { };
+
   openmpi = callPackage ../development/libraries/openmpi { };
 
   qastools = callPackage ../tools/audio/qastools {