Bump cabal format version

cabal2nix/cabal2nix.cabal

@@ -1,3 +1,4 @@
+cabal-version:      2.2
 name:               cabal2nix
 version:            2.21.3
 synopsis:           Convert Cabal files into Nix build instructions.
@@ -6,7 +7,7 @@ description:
   version by running:
   .
   > nix-env -i cabal2nix
-license:            BSD3
+license:            BSD-3-Clause
 license-file:       LICENSE
 author:             Peter Simons <simons@cryp.to>
 -- list all contributors: git log --pretty='%an' | sort | uniq
@@ -21,7 +22,6 @@ extra-doc-files:    README.md
                     CHANGELOG.md
 extra-source-files: test/golden-test-cases/*.cabal
                     test/golden-test-cases/*.nix.golden
-cabal-version:      1.24
 
 source-repository head
   type:     git
@@ -47,6 +47,7 @@ library
                       Distribution.Nixpkgs.Haskell.OrphanInstances
                       Distribution.Nixpkgs.Haskell.PackageSourceSpec
                       Distribution.Nixpkgs.Haskell.Platform
+  autogen-modules:    Paths_cabal2nix
   other-modules:      Paths_cabal2nix
   hs-source-dirs:     src
   build-depends:      base                 > 4.11 && <5
@@ -94,6 +95,7 @@ executable cabal2nix
 
 executable hackage2nix
   main-is:            Main.hs
+  autogen-modules:    Paths_cabal2nix
   other-modules:      HackageGit
                       Paths_cabal2nix
   hs-source-dirs:     hackage2nix
@@ -134,5 +136,5 @@ test-suite regression-test
                     , tasty
                     , tasty-golden
   default-language:   Haskell2010
-  build-tools:        cabal2nix
+  build-tool-depends: cabal2nix:cabal2nix
   ghc-options:        -threaded -with-rtsopts=-K64K

distribution-nixpkgs/distribution-nixpkgs.cabal

@@ -1,8 +1,9 @@
+cabal-version: 2.2
 name:          distribution-nixpkgs
 version:       1.7.1.1
 synopsis:      Types and functions to manipulate the Nixpkgs distribution
 description:   Types and functions to represent, query, and manipulate the Nixpkgs distribution.
-license:       BSD3
+license:       BSD-3-Clause
 license-file:  LICENSE
 author:        Peter Simons <simons@cryp.to>
 maintainer:    sternenseemann <sternenseemann@systemli.org>
@@ -11,7 +12,6 @@ category:      Distribution, Nix
 homepage:      https://github.com/NixOS/cabal2nix/tree/master/distribution-nixpkgs#readme
 bug-reports:   https://github.com/NixOS/cabal2nix/issues
 build-type:    Simple
-cabal-version: 1.18
 data-files:    derivation-attr-paths.nix
 extra-doc-files:    CHANGELOG.md
                     README.md
@@ -28,6 +28,7 @@ library
                       Distribution.Nixpkgs.Meta
                       Distribution.Nixpkgs.PackageMap
                       Language.Nix.PrettyPrinting
+  autogen-modules:    Paths_distribution_nixpkgs
   other-modules:      Paths_distribution_nixpkgs
   hs-source-dirs:     src
   build-depends:      base         > 4.2 && < 5

hackage-db/hackage-db.cabal

@@ -1,11 +1,12 @@
+cabal-version: 2.2
 name:          hackage-db
 version:       2.1.3
 synopsis:      Access cabal-install's Hackage database via Data.Map
 description:   This library provides convenient access to the local copy of the Hackage
                database that \"cabal update\" creates. Check out
                <https://github.com/NixOS/hackage-db/tree/master/example/> for a collection
                of simple example programs that demonstrate how to use this code.
-license:       BSD3
+license:       BSD-3-Clause
 license-file:  LICENSE
 author:        Peter Simons, Alexander Altman, Ben James, Kevin Quick
 maintainer:    sternenseemann <sternenseemann@systemli.org>
@@ -14,7 +15,6 @@ category:      Distribution
 homepage:      https://github.com/NixOS/cabal2nix/tree/master/hackage-db#readme
 bug-reports:   https://github.com/NixOS/cabal2nix/issues
 build-type:    Simple
-cabal-version: 1.18
 extra-doc-files:    README.md
                     CHANGELOG.md
 
@@ -36,7 +36,6 @@ library
                     Distribution.Hackage.DB.Path
                     Distribution.Hackage.DB.Unparsed
                     Distribution.Hackage.DB.Utility
-  other-modules:    Paths_hackage_db
   hs-source-dirs:   src
   build-depends:    base        >= 4.9 && < 5
                   , Cabal       >= 3.4

language-nix/language-nix.cabal

@@ -1,9 +1,10 @@
+cabal-version: 2.2
 name:          language-nix
 version:       2.3.0
 synopsis:      Data types and functions to represent the Nix language
 description:   Data types and useful functions to represent and manipulate the Nix
                language.
-license:       BSD3
+license:       BSD-3-Clause
 license-file:  LICENSE
 author:        Peter Simons
 maintainer:    simons@cryp.to
@@ -12,7 +13,6 @@ category:      Distribution, Language, Nix
 homepage:      https://github.com/NixOS/cabal2nix/tree/master/language-nix#readme
 bug-reports:   https://github.com/NixOS/cabal2nix/issues
 build-type:    Simple
-cabal-version: 1.18
 extra-doc-files: README.md
                  CHANGELOG.md