# Revision History for cabal2nix

## 2.18.0

* Support GHC 9.0.x and Cabal 3.4.0.0,
  **API breaking change**
  (See [#503](https://github.com/NixOS/cabal2nix/pull/503))
* Fix fetching remote _archives_: Previously they weren't properly
  unpacked, **API breaking change**
  (See [#455](https://github.com/NixOS/cabal2nix/pull/455))
* Resolution of system dependency attribute names in nixpkgs
  * Update changed upstream attribute names, reflect deprecations
  * Fix hackage2nix not resolving certain attribute names if multiple
    attribute names referred to the same derivation.
    (See [#492](https://github.com/NixOS/cabal2nix/pull/492) and
    [distribution-nixpkgs#10](https://github.com/NixOS/distribution-nixpkgs/pull/10))
* hackage2nix: accept multiple config files at the command
  line given by specifying `--config` more than once
  (See [#494](https://github.com/NixOS/cabal2nix/pull/494))