* Add alex to build-tool-depends and remove separate code gen

- Pass latin-1 encoding is passed as input pragma
- Cabal hard-codes -g for alex so we don't need to worry about --ghc
- Rework bootstrap, adding per-component building
- Update bootstrap plans

* [bootstrap] warn the user if cabal config is not found

* [bootstrap] regenerate bootstrap plans once more

* [bootstrap] regenerate bootstrap files after #9139

Remove v2-prefix from other documentation where appropriate

* Added a changelog file

* Merge branch 'master' of github.com:haskell/cabal into remove-v2-from-docs

* Implemented PR feedback

* Reverted changes to regression tests

* Update CONTRIBUTING.md

Co-authored-by: Artem Pelenitsyn <a.pelenitsyn@gmail.com>

* Update bootstrap/bootstrap.py

Co-authored-by: Artem Pelenitsyn <a.pelenitsyn@gmail.com>

* Apply suggestions from code review

Co-authored-by: Artem Pelenitsyn <a.pelenitsyn@gmail.com>

* Merge branch 'master' into remove-v2-from-docs

* Removed changelog entry

* Merge branch 'remove-v2-from-docs' of github.com:aspidites/cabal into remove-v2-from-docs

* Reverted bootstrap/README.md

* Merge branch 'master' into remove-v2-from-docs

Co-authored-by: ulysses4ever <6832600+ulysses4ever@users.noreply.github.com>

This ports to cabal-install the offline bootstrapping logic which was
introduced for Hadrian in GHC MR !6315.

This adds a "fetch" command to the bootstrap script, which fetches
all the dependency tarballs from Hackage, to be used in an offline
build. See bootstrap/README.md for further information.

This allows bootstrapping against zlib 0.6.3.0, which ships
without Setup.hs.

I hope this should generally be a more robust approach than
asking maintainers of dependencies to keep Setup.hs.

* Changes needed for GenValidate and release.py to
  accommmodate new solver dependency
* Bumps bootstrap plans to modern GHC versions
* Update `validate.sh` and `release.py` to accommodate new solver dep.
* Update `Makefile` targets

A script essentially runs `v2-install cabal-install:exe:cabal`,
but does some simple setup, so the result is less luckily
to be influences by environment.

Also improve bootstrap to do out-of-tree builds.
- Use http, https tricky in some environments

Ben Gamari authored 5 years ago and Oleg Grenrus committed 4 years ago

The plan: A JSON file (generated with bootstrap.py --extract-plan)
containing dependency and source information is built from plan.json.
This is then used to fetch and build the bootstrapping dependencies.
Since this is only to be used for bootstrapping on new architectures, we
advise the users to only use the resulting cabal-install executable to
build a proper cabal-install.