Adding a Pipewire application profile (#821)

* Adding a Pipewire application profile

This to better manage the pipewire setup process and minimize guided a bit. This also adds the concept of @archinstall.plugin decorators to add a plugin in run-time. Which pipewire uses to detect user creation and enable the pipewire-pulse service for new users.

* Forgot to run .install() on pipewire Application()
* Backwards compatible variable insertion for installation session

4 files changed, 28 insertions, 5 deletions

diff --git a/archinstall/__init__.py b/archinstall/__init__.py
index 865e9844..9d7e238d 100644
--- a/archinstall/__init__.py
+++ b/archinstall/__init__.py
@@ -172,7 +172,11 @@ define_arguments()
 arguments = get_arguments()
 post_process_arguments(arguments)
 
-# TODO: Learn the dark arts of argparse... (I summon thee dark spawn of cPython)
+# @archinstall.plugin decorator hook to programmatically add
+# plugins in runtime. Useful in profiles and other things.
+def plugin(f, *args, **kwargs):
+	plugins[f.__name__] = f
+
 
 def run_as_a_module():
 	"""
diff --git a/archinstall/lib/installer.py b/archinstall/lib/installer.py
index 9d89c375..c02d5717 100644
--- a/archinstall/lib/installer.py
+++ b/archinstall/lib/installer.py
@@ -109,7 +109,9 @@ class Installer:
 
 		self.post_base_install = []
 
+		# TODO: Figure out which one of these two we'll use.. But currently we're mixing them..
 		storage['session'] = self
+		storage['installation_session'] = self
 
 		self.MODULES = []
 		self.BINARIES = []
@@ -782,13 +784,18 @@ class Installer:
 		handled_by_plugin = False
 		for plugin in plugins.values():
 			if hasattr(plugin, 'on_user_create'):
-				if result := plugin.on_user_create(user):
+				if result := plugin.on_user_create(self, user):
 					handled_by_plugin = result
 
 		if not handled_by_plugin:
 			self.log(f'Creating user {user}', level=logging.INFO)
 			SysCommand(f'/usr/bin/arch-chroot {self.target} useradd -m -G wheel {user}')
 
+		for plugin in plugins.values():
+			if hasattr(plugin, 'on_user_created'):
+				if result := plugin.on_user_created(self, user):
+					handled_by_plugin = result
+
 		if password:
 			self.user_set_pw(user, password)
 
diff --git a/examples/guided.py b/examples/guided.py
index d36b4cbc..57409644 100644
--- a/examples/guided.py
+++ b/examples/guided.py
@@ -295,9 +295,7 @@ def perform_installation(mountpoint):
 			if archinstall.arguments.get('audio', None) is not None:
 				installation.log(f"This audio server will be used: {archinstall.arguments.get('audio', None)}", level=logging.INFO)
 				if archinstall.arguments.get('audio', None) == 'pipewire':
-					print('Installing pipewire ...')
-
-					installation.add_additional_packages(["pipewire", "pipewire-alsa", "pipewire-jack", "pipewire-media-session", "pipewire-pulse", "gst-plugin-pipewire", "libpulse"])
+					archinstall.Application(installation, 'pipewire').install()
 				elif archinstall.arguments.get('audio', None) == 'pulseaudio':
 					print('Installing pulseaudio ...')
 					installation.add_additional_packages("pulseaudio")
diff --git a/profiles/applications/pipewire.py b/profiles/applications/pipewire.py
new file mode 100644
index 00000000..38554000
--- /dev/null
+++ b/profiles/applications/pipewire.py
@@ -0,0 +1,14 @@
+import archinstall
+import logging
+
+# Define the package list in order for lib to source
+# which packages will be installed by this profile
+__packages__ = ["pipewire", "pipewire-alsa", "pipewire-jack", "pipewire-media-session", "pipewire-pulse", "gst-plugin-pipewire", "libpulse"]
+
+archinstall.log('Installing pipewire', level=logging.INFO)
+archinstall.storage['installation_session'].add_additional_packages(__packages__)
+
+@archinstall.plugin
+def on_user_created(installation :archinstall.Installer, user :str):
+	archinstall.log(f"Enabling pipewire-pulse for {user}", level=logging.INFO)
+	installation.chroot('systemctl enable --user pipewire-pulse.service', run_as=user)
\ No newline at end of file