install to different prefix. thanks orra

setup.py

@@ -94,6 +94,67 @@ data = [('share/deluge/glade',  glob.glob('glade/*.glade')),
 for plugin in glob.glob('plugins/*'):
 	data.append( ('share/deluge/' + plugin, glob.glob(plugin + '/*')) )
 
+# Thanks to orra for code to save the location for installed prefix
+# At runtime, we need to know where we installed the data to.
+import shutil
+from distutils import cmd
+from distutils.command.install import install as _install
+
+class write_data_install_path(cmd.Command):
+	description = 'saves the data installation path for access at runtime'
+	
+	def initialize_options(self):
+		self.data_install_dir = None
+		self.lib_build_dir = None
+
+	def finalize_options(self):
+		self.set_undefined_options('install',
+			('install_data', 'data_install_dir')
+		)		
+		self.set_undefined_options('build',
+			('build_lib', 'lib_build_dir')
+		)
+
+	def run(self):
+		conf_filename = os.path.join(self.lib_build_dir,
+			'deluge', 'dcommon.py')
+
+		conf_file = open(conf_filename, 'r')
+		data = conf_file.read()
+		conf_file.close()
+		data = data.replace('@datadir@', self.data_install_dir)
+
+		conf_file = open(conf_filename, 'w')
+		conf_file.write(data)
+		conf_file.close()
+
+class unwrite_data_install_path(cmd.Command):
+	description = 'undoes write_data_install_path'
+
+	def initialize_options(self):
+		self.lib_build_dir = None
+
+	def finalize_options(self):		
+		self.set_undefined_options('build',
+			('build_lib', 'lib_build_dir')
+		)
+
+	def run(self):
+		dest = os.path.join(self.lib_build_dir,
+			'deluge', 'dcommon.py')
+		shutil.copyfile('src/dcommon.py', dest)
+
+class install(_install):
+	sub_commands = [('write_data_install_path', None)] + \
+		_install.sub_commands + [('unwrite_data_install_path', None)]
+
+cmdclass = {
+	'install': install,
+	'write_data_install_path': write_data_install_path,
+	'unwrite_data_install_path': unwrite_data_install_path,
+}
+
+
 setup(name="deluge", fullname="Deluge BitTorrent Client", version="0.4.90.2",
 	author="Zach Tibbitts, Alon Zakai",
 	author_email="zach@collegegeek.org, kripkensteiner@gmail.com",
@@ -105,5 +166,6 @@ setup(name="deluge", fullname="Deluge BitTorrent Client", version="0.4.90.2",
 	package_dir = {'deluge': 'src'},
 	data_files=data,
 	ext_package='deluge',
-	ext_modules=[deluge_core]
+	ext_modules=[deluge_core],
+	cmdclass=cmdclass
 	)

src/dcommon.py

@@ -28,9 +28,11 @@ PROGRAM_VERSION = "0.4.90.2"
 
 CONFIG_DIR = xdg.BaseDirectory.save_config_path('deluge')
 
-GLADE_DIR  = sys.prefix + '/share/deluge/glade'
+# the necessary substitutions are made at installation time
-PIXMAP_DIR = sys.prefix + '/share/deluge/pixmaps'
+INSTALL_PREFIX = '@datadir@'
-PLUGIN_DIR = sys.prefix + '/share/deluge/plugins'
+GLADE_DIR  = INSTALL_PREFIX + '/share/deluge/glade'
+PIXMAP_DIR = INSTALL_PREFIX + '/share/deluge/pixmaps'
+PLUGIN_DIR = INSTALL_PREFIX + '/share/deluge/plugins'
 
 def estimate_eta(state):
 	try: