haskellPackages.distribution-nixpkgs: 1.6.2 -> 1.7.0

Since stable cabal2nix now supports the release, we can finally upgrade.

pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml

···
   - http-client-restricted < 0.0.5
   # Needs dhall 1.41.*, Stackage LTS 19 has 1.40
   - dhall-nix < 1.1.24
-  # Temporarily forbid distribution-nixpkgs updates until cabal2nix supports the new version
-  - distribution-nixpkgs < 1.7.0
   # patch is primarily used by reflex packages not all of which are patch 0.0.7 compatible yet
   - patch < 0.0.7
   - reflex < 0.8.2.1

pkgs/development/haskell-modules/hackage-packages.nix

···
 
   "distribution-nixpkgs" = callPackage
     ({ mkDerivation, aeson, base, bytestring, Cabal, containers
-     , deepseq, hspec, language-nix, lens, pretty, process, split
-     }:
-     mkDerivation {
-       pname = "distribution-nixpkgs";
-       version = "1.6.2";
-       sha256 = "0kq4pf5dalifxd8qxz75fazfjspn36q0cmp8d1jd7w9zlzc3c4dz";
-       enableSeparateDataOutput = true;
-       libraryHaskellDepends = [
-         aeson base bytestring Cabal containers deepseq language-nix lens
-         pretty process split
-       ];
-       testHaskellDepends = [ base deepseq hspec lens ];
-       description = "Types and functions to manipulate the Nixpkgs distribution";
-       license = lib.licenses.bsd3;
-       maintainers = [ lib.maintainers.peti ];
-     }) {};
-
-  "distribution-nixpkgs_1_7_0" = callPackage
-    ({ mkDerivation, aeson, base, bytestring, Cabal, containers
      , deepseq, directory, hspec, language-nix, lens, pretty, process
      }:
      mkDerivation {
···
        ];
        description = "Types and functions to manipulate the Nixpkgs distribution";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
        maintainers = [ lib.maintainers.peti ];
      }) {};
 

pkgs/development/haskell-modules/non-hackage-packages.nix

···
 
   # Used by maintainers/scripts/regenerate-hackage-packages.sh, and generated
   # from the latest master instead of the current version on Hackage.
-  cabal2nix-unstable = self.callPackage ./cabal2nix-unstable.nix {
-    distribution-nixpkgs = self.distribution-nixpkgs_1_7_0;
-  };
+  cabal2nix-unstable = self.callPackage ./cabal2nix-unstable.nix { };
 
   # https://github.com/channable/vaultenv/issues/1
   vaultenv = self.callPackage ../tools/haskell/vaultenv { };