Add -Wunused-packages to the packages (#9663)
tree254fd1c00824035990a1531027d2fd17712067bf
drwxr-xr-x - .docker
-rw-r--r-- 451 .dockerignore
-rw-r--r-- 1071 .git-blame-ignore-revs
-rw-r--r-- 259 .gitattributes
drwxr-xr-x - .githooks
drwxr-xr-x - .github
-rw-r--r-- 1103 .gitignore
-rw-r--r-- 3442 .gitlab-ci.yml
drwxr-xr-x - .gitlab
-rw-r--r-- 4577 .hlint.yaml
-rw-r--r-- 13483 .mailmap
-rw-r--r-- 166 .readthedocs.yml
-rw-r--r-- 16743 AUTHORS
-rw-r--r-- 17751 CONTRIBUTING.md
drwxr-xr-x - Cabal-QuickCheck
drwxr-xr-x - Cabal-described
drwxr-xr-x - Cabal-syntax
drwxr-xr-x - Cabal-tests
drwxr-xr-x - Cabal-tree-diff
drwxr-xr-x - Cabal
-rw-r--r-- 1661 LICENSE
-rw-r--r-- 8941 Makefile
-rw-r--r-- 4539 README.md
drwxr-xr-x - bootstrap
drwxr-xr-x - buildinfo-reference-generator
drwxr-xr-x - cabal-benchmarks
drwxr-xr-x - cabal-dev-scripts
drwxr-xr-x - cabal-install-solver
drwxr-xr-x - cabal-install
drwxr-xr-x - cabal-testsuite
-rw-r--r-- 513 cabal.project
-rw-r--r-- 227 cabal.project.buildinfo
-rw-r--r-- 472 cabal.project.doctest
-rw-r--r-- 546 cabal.project.latest-ghc
-rw-r--r-- 301 cabal.project.libonly
-rw-r--r-- 47 cabal.project.meta
-rw-r--r-- 202 cabal.project.release
-rw-r--r-- 679 cabal.project.validate
-rw-r--r-- 585 cabal.project.validate.libonly
-rw-r--r-- 276 cabal.project.weeder
drwxr-xr-x - changelog.d
drwxr-xr-x - doc
drwxr-xr-x - editors
-rw-r--r-- 2848 fix-whitespace.yaml
-rw-r--r-- 1065 fourmolu.yaml
-rw-r--r-- 3821 generics-sop-lens.hs
-rw-r--r-- 19 ghc-packages
-rw-r--r-- 3248 id_rsa_cabal_website.aes256.enc
drwxr-xr-x - license-list-data
-rw-r--r-- 104 release-checklist.md
drwxr-xr-x - release-notes
drwxr-xr-x - scripts
drwxr-xr-x - solver-benchmarks
-rw-r--r-- 636 stack.yaml
drwxr-xr-x - templates
drwxr-xr-x - test
drwxr-xr-x - tests
-rwxr-xr-x 14804 validate.sh
-rw-r--r-- 175 weeder.dhall