...and exploit new `cabal-install-1.18` package installing into `/opt/cabal/1.18/bin`

Fix typos

This reverts commit fdf8afce.

Fixes #1771.

Add support for 'main-is' to 'cabal init'

Daniel Trstenjak authored 11 years ago and tibbe committed 11 years ago

The list constructors 'nestedListField' and 'nestedCommaListField'
have been added and are now used for fields that should be pretty
printed with nesting.

ryantrinkle authored 11 years ago and Mikhail Glushenkov committed 11 years ago

This includes a new flag, --main-is, as well as a new prompt that appears if the user selects the 'Executable' option or uses --is-executable.

* Fix copyright field.
* List valid versions for each license.
* Remove descriptions for most licenses; just link to them instead.
* Explain why BSD4 should be avoided.
* State that public domain is not a license.
* Link to user guide.

Of course processing an empty install plan doesn't do very much
but did give some slightly confusing messages at higher verbosity
levels.

It's not supported by latest test-framework. See
https://github.com/haskell/test-framework/issues/2

This reverts commit 0038d05a, reversing
changes made to c721e851.

This reverts commit 68d9077c.

This reverts commit 3c7a7408, reversing
changes made to 68d9077c.

This is related to #667 and similiar issues

Pretty print 'extensions' and 'tested-with' fields in one line.

'install --enable-tests' shouldn't actually run tests.

Add a 'haddock' section to '~/.cabal/config'.

Conflicts:
	Cabal/Distribution/ParseUtils.hs

Fix #893 (Broken links in user guide)

An InstallPlan contains installed packages in the package database which are
not required to satisfy the dependencies of the user targets. To prevent
including them in the frozen set of constraints, `Freeze.planPackages` uses
`D.C.PackageIndex.dependencyClosure` to try and take the transitive closure of
the package dependencies.

Whilst it is possible for `pruneInstallPlan` to fail, only valid
`InstallPlan`s are passed to it. If a failure does occur, we error.