The theme name uses `default` as fallback for tweaks when they aren't
set, which not only is not a valid tweak name, but can lead to confusion 
and inconsistencies (See: https://github.com/catppuccin/nix/pull/261).
---
 sources/build/context.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sources/build/context.py b/sources/build/context.py
index 3d43c01..6167f14 100644
--- a/sources/build/context.py
+++ b/sources/build/context.py
@@ -45,7 +45,8 @@ class BuildContext:
         return f"{self.output_root}/{self.build_id()}"
 
     def build_id(self) -> str:
-        return f"{self.theme_name}-{self.flavor.identifier}-{self.accent.identifier}-{self.size}+{self.tweaks.id() or 'default'}"
+        tweaks = f"+{self.tweaks.id()}" if self.tweaks.id() != "" else ""
+        return f"{self.theme_name}-{self.flavor.identifier}-{self.accent.identifier}-{self.size}" + tweaks
 
     def apply_suffix(self, suffix: Suffix) -> str:
         if suffix.test(self):
@@ -59,6 +60,7 @@ class BuildContext:
             Subsitution(find=f"\\${key}: {default}", replace=f"${key}: {value}"),
         )
 
+
 IS_DARK = Suffix(true_value="-Dark", test=lambda ctx: ctx.flavor.dark)
 IS_LIGHT = Suffix(true_value="-Light", test=lambda ctx: not ctx.flavor.dark)
 IS_WINDOW_NORMAL = Suffix(
-- 
2.45.1