draft: Make i3 package to select i3 configuration

profiles/i3.py

@@ -0,0 +1,55 @@
+# Common package for i3, lets user select which i3 configuration they want.
+
+import archinstall, os
+
+is_top_level_profile = False
+
+# New way of defining packages for a profile, which is iterable and can be used out side
+# of the profile to get a list of "what packages will be installed".
+__packages__ = []
+
+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.
+	"""
+
+	supported_configurations = ['i3-wm', 'i3-gaps']
+	desktop = archinstall.generic_select(supported_configurations, 'Select your desired configuration: ')
+	
+	# Temporarily store the selected desktop profile
+	# in a session-safe location, since this module will get reloaded
+	# the next time it gets executed.
+	archinstall.storage['_desktop_profile'] = desktop
+
+	profile = archinstall.Profile(None, desktop)
+	# Loading the instructions with a custom namespace, ensures that a __name__ comparison is never triggered.
+	with profile.load_instructions(namespace=f"{desktop}.py") as imported:
+		if hasattr(imported, '_prep_function'):
+			return imported._prep_function()
+		else:
+			print(f"Deprecated (??): {desktop} profile has no _prep_function() anymore")
+
+if __name__ == 'i3':
+	"""
+	This "profile" is a meta-profile.
+	There are no desktop-specific steps, it simply routes
+	the installer to whichever desktop environment/window manager was chosen.
+
+	Maybe in the future, a network manager or similar things *could* be added here.
+	We should honor that Arch Linux does not officially endorse a desktop-setup, nor is
+	it trying to be a turn-key desktop distribution.
+
+	There are plenty of desktop-turn-key-solutions based on Arch Linux,
+	this is therefore just a helper to get started
+	"""
+	
+	# Install common packages for all i3 configurations
+	installation.add_additional_packages(__packages__)
+
+	# TODO: Remove magic variable 'installation' and place it
+	#       in archinstall.storage or archinstall.session/archinstall.installation
+	installation.install_profile(archinstall.storage['_desktop_profile'])
+