https://gitlab.archlinux.org/archlinux/packaging/packages/python-adblock/-/blob/main/pep-621-compatibility.patch?ref_type=heads

Index: Cargo.toml
--- Cargo.toml.orig
+++ Cargo.toml
@@ -9,15 +9,6 @@ readme = "README.md"
 homepage = "https://github.com/ArniDagur/python-adblock"
 repository = "https://github.com/ArniDagur/python-adblock"
 
-[package.metadata.maturin]
-classifier = [
-    "Programming Language :: Python",
-    "Programming Language :: Rust",
-    "License :: OSI Approved :: MIT License",
-    "License :: OSI Approved :: Apache Software License",
-]
-requires-python = ">=3.7"
-
 [profile.release]
 debug = true
 
