Merge pull request #254 from dylanmtaylor/budgie

Add missing cherry-picked commits and implement Budgie

profiles/applications/budgie.py

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+import archinstall
+
+# "It is recommended also to install the gnome group, which contains applications required for the standard GNOME experience." - Arch Wiki 
+installation.add_additional_packages("budgie-desktop lightdm lightdm-gtk-greeter lightdm-gtk-greeter-settings gnome")

profiles/applications/cinnamon.py

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+import archinstall
+
+installation.add_additional_packages("cinnamon system-config-printer gnome-keyring gnome-terminal blueberry metacity lightdm lightdm-gtk-greeter lightdm-gtk-greeter-settings") 

profiles/applications/xfce4.py

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+import archinstall
+
+installation.add_additional_packages("xfce4 xfce4-goodies lightdm lightdm-gtk-greeter lightdm-gtk-greeter-settings") 

profiles/budgie.py

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+# A desktop environment using "budgie"
+
+import archinstall
+
+is_top_level_profile = False
+
+def _prep_function(*args, **kwargs):
+	"""
+	Magic function called by the importing installer
+	before continuing any further. It also avoids executing any
+	other code in this stage. So it's a safe way to ask the user
+	for more input before any other installer steps start.
+	"""
+
+	# budgie requires a functioning Xorg installation.
+	profile = archinstall.Profile(None, 'xorg')
+	with profile.load_instructions(namespace='xorg.py') as imported:
+		if hasattr(imported, '_prep_function'):
+			return imported._prep_function()
+		else:
+			print('Deprecated (??): xorg profile has no _prep_function() anymore')
+
+# Ensures that this code only gets executed if executed
+# through importlib.util.spec_from_file_location("budgie", "/somewhere/budgie.py")
+# or through conventional import budgie
+if __name__ == 'budgie':
+	# Install dependency profiles
+	installation.install_profile('xorg')
+
+	# Install the application budgie from the template under /applications/
+	budgie = archinstall.Application(installation, 'budgie')
+	budgie.install()
+
+	installation.enable_service('lightdm') # Light Display Manager