Backports

• Backported to 3.4 #6964 #6968

• CI setup #6959

  • Remove travis scripts

Significant Changes

• Add post-checkout-command to source-package-repository #6664 #7047

• Assume list-bin target selectors are for executables #7326 #7335

• Add a --only-download flag #7323 #7347

• Add hsc2hs-options, for specifying additional options to pass to hsc2hs #6295

• Make extra-packages work properly #6972

• Bugfix - stop creating spurious dirs on init #6772 #7262

• Avoid resource exhaustion in cabal init #5115 #7283

  • Read file contents strictly to avoid resource exhaustion in cabal init.
  • Ignore UTF-8 decoding errors.

• Add language extensions for GHC 9.2 #7312

• --dry-run and --only-download effect v2-configure, v2-freeze, v2-run, and v2-exec #7379

• Fix instantiating an indefinite Backpack from Hackage with an inplace package #6835 #7413

  Previously, cabal-install would always attempt to put instantiations of indefinite packages from Hackage in the global package store, even if they were instantiated with inplace packages. This would not work and GHC would complain about packages being missing from the package database. We have fixed the instantiation algorithm to correctly inplace packages in these situations, removing one of the last blockers to widespread use of Backpack packages on Hackage.

• removes the warnings for extraneous versions #7286 #7470

• Alert user and suggest command on spelling mistakes

Other improvements

• Code organization #6960 #6963 #6970 #6974 #6975

  • Move Cabal sources into Cabal/src
  • Move cabal-install sources to cabal-install/src/
  • Move doc/ to the top-level of the repository
  • Add stylish-haskell config.

• Documentation improvements #6813 #6971 #7047