[chore] adjust README to talk about cachix

README.md

@@ -22,7 +22,11 @@ If you don't use `nix`, you can also build from source with `cabal` or install
 [download a static executable from one of the latest workflow runs](https://github.com/MangoIV/cabal-audit/actions). 
 
 In order to do so, navigate to the workflows (link above), press on one of the green ones, then press the download button
-on the Artifacts tab
+on the Artifacts tab.
+
+> [!Note]
+> We also have a `cachix`. If you trust me (which I do not recommend, never trust anybody!), run `cachix use cabal-audit` to 
+> download directly from the cachix and skip building.
 
 ## Usage