* Restructures the `cabal init` command to fix historical
  issues. All flags are preserved.
  * Codebases for interactive and non-interactive flags
    are disentangled.
  * Data structures now exploit relevant stanza structure
    and formatters only care about stanza data
  * Heuristics and prompts have a pure and impure implementation.

* Sets default behavior to be `--interactive` as opposed to
  `--non-interactive`.

* Rewrites tests to achieve 98% coverage
  * Golden files now test every stanza individually
  * Every flag is covered by a unit test
  * Interactive, simple, and non-interactive workflows are
    covered.

Set -Wno-prepositive-qualified-module in Paths_*.hs

Fixes #7351

Expose cabal-install lib, remove dogfooding, expose cabal-install-solver as own lib, enable HPC coverage reporting. 

* 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

* Strips away dogfooding framework and zinza templates
* Splits out tests into targets by as a function of running time
* Delete TESTING.md as it no longer applies
* Bump cabal-install.cabal to its dev template settings (base >= 4.10,
Cabal 2.2)
* Remove Paths_cabal_install (blocks HPC generation)
* Add `long-tests` target to split out unit-tests and long-running
  DVCS tests.

* Add Setup.hs for `cabal-install-solver`
* Update `cabal.project` pkg path for `cabal-install-solver`

* Documented limitation of compiler flag

* Added changelog entry

* Removed changelog entry

* Removed empty promise

* Removed another promise

Co-authored-by: James Hobson <james.hobson@oriel.ox.ac.uk>

* GHC: Rename cLikeFiles -> cLikeSources

* changelog: Add entry for #7252

* Add name change convention for c-like objects

Co-authored-by: Emily Pillmore <emilypi@cohomolo.gy>

* Add language and extensions for 9.2
* Add changelog entry for extensions
* Add vim editor entry for 9.2 extensions

Co-authored-by: Ben Gamari <ben@smart-cactus.org>

Documented the interaction between Backpack and Template Haskell.

Workaround for failing test due to GHC #19397

Fix test --enable-coverage for multi-package projects

Include `cmm-sources` when linking shared objects

Mark "install --lib" as provisional

Ollie Charles authored 4 years ago and Ollie Charles committed 3 years ago

Currently, if you have multiple packages in a project and try and run
the test suite of a single package with --enable-coverage, hpc will fail
to run. The problem is that _all_ dependencies of the package are built
with `-fhpc`, but when we run `hpc markup`, we are only passing the
`.mix` directory of the package being tested. Because we built all
dependencies with `-fhpc` and we haven't excluded them from the report,
we need to supply their `.mix` directories too.

The above suggests one fix - compute the transitive closure of all
`.mix` directories. However, there is another solution - change from
using an exclude-list to using an include-list. This is the approach
used in this commit.

Explicitly enumerating all modules to _include_ in the report is simpler
to code, but is also more likely to be what the user is interested in.
Generally, when one generates a coverage report from a test-suite, they
want to understand the coverage of the unit being tested. Having
coverage information from dependencies is usually not relevant. This is
also the behavior from old-style Cabal builds, where there wasn't even
a notion of a Cabal project.

Fixes #5433.

And don't encourage its use as much as before. Adding packages to
build-depends is more often what the user wants.

This is based on / similar to https://github.com/haskell/cabal/pull/7219

We used import qualified M in Paths_*.hs, which might be disallowed in
GHC 8.10 when -Wprepositive-qualified-module is set.

--only-download flag