refactor: set default aur helper to constant

src/caelestia/subcommands/install.py

@@ -7,7 +7,7 @@ from pathlib import Path
 
 from caelestia.utils.dots.deployer import Deployer
 from caelestia.utils.dots.manifest import Manifest, ManifestError, expand, expand_dests
-from caelestia.utils.dots.packages import PackageInstaller
+from caelestia.utils.dots.packages import DEFAULT_AUR_HELPER, PackageInstaller
 from caelestia.utils.dots.source import DotsSource, SourceError
 from caelestia.utils.dots.state import DotsState
 from caelestia.utils.io import confirm, disable_input, fatal, info, log, pause, warn
@@ -155,7 +155,7 @@ class Command:
                 log(f"Building {path}...")
                 local_packages[path] = installer.build_install(directory)
 
-        return getattr(installer, "helper", ""), packages, local_packages
+        return getattr(installer, "helper", DEFAULT_AUR_HELPER), packages, local_packages
 
     def run_hooks(self, manifest: Manifest) -> None:
         hooks = manifest.enabled_hooks("post_install")

src/caelestia/utils/dots/packages.py

@@ -1,11 +1,13 @@
 import shutil
 import subprocess
+import tempfile
 from abc import ABC, abstractmethod
 from pathlib import Path
 
 from caelestia.utils.io import fatal, info
 
-AUR_HELPERS = "paru", "yay"
+DEFAULT_AUR_HELPER = "paru"
+AUR_HELPERS = DEFAULT_AUR_HELPER, "yay"
 
 
 def _install_aur_helper(helper: str, noconfirm: bool = False) -> None:
@@ -31,7 +33,7 @@ def _install_aur_helper(helper: str, noconfirm: bool = False) -> None:
     if helper == "yay":
         subprocess.run(["yay", "-Y", "--gendb"], check=True)
         subprocess.run(["yay", "-Y", "--devel", "--save"], check=True)
-    else:
+    elif helper == "paru":
         subprocess.run(["paru", "--gendb"], check=True)
 
 
@@ -59,9 +61,9 @@ class PackageInstaller(ABC):
             if shutil.which(candidate):
                 return ArchInstaller(candidate, noconfirm)
 
-        info("No AUR helper found. Installing paru...")
-        _install_aur_helper("paru", noconfirm)
-        return ArchInstaller("paru", noconfirm)
+        info(f"No AUR helper found. Installing {DEFAULT_AUR_HELPER}...")
+        _install_aur_helper(DEFAULT_AUR_HELPER, noconfirm)
+        return ArchInstaller(DEFAULT_AUR_HELPER, noconfirm)
 
     # --- Abstract methods ---
 

src/caelestia/utils/dots/state.py

@@ -1,6 +1,7 @@
 import json
 from dataclasses import dataclass, field
 
+from caelestia.utils.dots.packages import DEFAULT_AUR_HELPER
 from caelestia.utils.io import warn
 from caelestia.utils.paths import atomic_dump, dots_state_path
 
@@ -31,7 +32,7 @@ class DotsState:
             return DotsState()
 
         return DotsState(
-            aur_helper=data.get("aur_helper"),
+            aur_helper=data.get("aur_helper", DEFAULT_AUR_HELPER),
             applied_rev=data.get("applied_rev"),
             enabled_components=data.get("enabled_components", []),
             packages=data.get("packages", []),