[ci skip]

For example, we used to search for "ld" when the program name specified by 'ghc
--info' was "i386-unknown-linux-ld".

Fixes #3140.

The finaliser used to fail when the user action deleted the file. See
https://github.com/haskell/cabal/issues/3140#issuecomment-183463437.

See #3133.

Quote cabal and ghc-pkg paths in cabal-install integration tests

Spaces in the path to ghc-pkg caused two tests to fail when run with the
Haskell Platform on Windows.

Needed because cabal-install no longer compiles against Cabal-1.23.1 snapshot
that came with GHC 8.

Correctly remove .exe from the cabal command listed in the man page.

Allow regexes in cabal-install integration test .err and .out files

Give `cabal-install` the Wcompat treatment

This gives `cabal-install` the same treatment as
f6428740 did for `Cabal`

...for cabal-install's benefit;

Not sure if we should bump the Cabal version to 1.23.1

Lines beginning with "RE:" are regular expressions, and other lines are exact
matches.

Initial appveyor.yml

Cabal: define MonadFail instances

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

bootstrap.sh: fix error introduced in 46584a2f

This silences `-Wnoncanonical-monadfail-instances` warnings in the Cabal
library

In 46584a2f I've accidentally put the hashable version string on a
separate line, causing the shell to try to execute the command
"1.2.4.0".  Fix it by removing the line.

See https://github.com/haskell/cabal/commit/a6a7ac59b01ebdc2fdf5a410adb5ae097ce92714#commitcomment-15937386.

Fix bootstrap.sh: add hashable

Since 1e1d82b8, hashable is needed.  Adapt bootstrap.sh accordingly.

New infrastructure: tracking changes in files and values

A FileMonitor is an abstraction for monitoring the status of files,
as well as changes in an in-memory value. Files can be tracked by file
modification time, or mod time plus content. We can also track files
that are expected not to exist (to help implement search paths). We can
also have file globs.

The abstraction is useful for re-running actions when input files or
values change. This pattern is captured by the Rebuild monad.

This adds a dependency on the hashable package (used by
unordered-containers). If this is a problem we can extract just the hash
function we need.

This is not used yet, so there's a temporary import just to make sure it
gets compiled.