Summary:
This should make it a lot easier to define Lift instances.
See https://mail.haskell.org/pipermail/libraries/2015-May/025728.html


for motivating discussion.

I needed to muck out some code from Quote into Syntax to get
the definition in the right place; but I would argue that code
never really belonged in Quote to begin with.

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

Test Plan: validate

Reviewers: austin, ekmett, goldfire

Subscribers: bgamari, thomie

Differential Revision: https://phabricator.haskell.org/D923

Summary:
See https://mail.haskell.org/pipermail/libraries/2015-April/025480.html


for the proposal and discussion

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

Test Plan: validate

Reviewers: austin

Subscribers: bgamari, thomie

Differential Revision: https://phabricator.haskell.org/D879

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

Test Plan: validate on 7.6

Reviewers: austin, goldfire

Subscribers: bgamari, thomie

Differential Revision: https://phabricator.haskell.org/D885

Summary:
This commit adds stage 1 support for Template Haskell
quoting, e.g. [| ... expr ... |], which is useful
for authors of quasiquoter libraries that do not actually
need splices.  The TemplateHaskell extension now does not
unconditionally fail; it only fails if the renamer encounters
a splice that it can't run.

In order to make sure the referenced data structures
are consistent, template-haskell is now a boot library.
There are some minor BC changes to template-haskell to make it boot
on GHC 7.8.

Note for reviewer: big diff changes are simply code
being moved out of an ifdef; there was no other substantive
change to that code.

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

Test Plan: validate

Reviewers: simonpj, austin, goldfire

Subscribers: bgamari, thomie

Differential Revision: https://phabricator.haskell.org/D876

GHC Trac Issues: #10382

Revert "Quick fix: drop base bound on template-haskell."

This reverts commit 3c70ae03.

Revert "Always do polymorphic typed quote check, c.f. #10384"

This reverts commit 9a43b2c1.

Revert "RnSplice's staging test should be applied for quotes in stage1."

This reverts commit eb0ed403.

Revert "Split off quotes/ from th/ for tests that can be done on stage1 compiler."

This reverts commit 21c72e7d.

Revert "Support stage 1 Template Haskell (non-quasi) quotes, fixes #10382."

This reverts commit 28257cae.

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

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

Test Plan: validate

Reviewers: simonpj, austin

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D850

[skip ci]

(cherry picked from commit 9d15af88)

See Note [Pretty-printing kind signatures] in Language.Haskell.TH.Ppr.hs,
and Trac #10050.

Summary:
As proposed in [1], this extension introduces a new syntactic form
`static e`, where `e :: a` can be any closed expression. The static form
produces a value of type `StaticPtr a`, which works as a reference that
programs can "dereference" to get the value of `e` back. References are
like `Ptr`s, except that they are stable across invocations of a
program.

The relevant wiki pages are [2, 3], which describe the motivation/ideas
and implementation plan respectively.

[1] Jeff Epstein, Andrew P. Black, and Simon Peyton-Jones. Towards
Haskell in the cloud. SIGPLAN Not., 46(12):118–129, September 2011. ISSN
0362-1340.
[2] https://ghc.haskell.org/trac/ghc/wiki/StaticPointers
[3] https://ghc.haskell.org/trac/ghc/wiki/StaticPointers/ImplementationPlan



Authored-by: Facundo Domínguez <facundo.dominguez@tweag.io>
Authored-by: Mathieu Boespflug <m@tweag.io>
Authored-by: Alexander Vershilov <alexander.vershilov@tweag.io>

Test Plan: `./validate`

Reviewers: hvr, simonmar, simonpj, austin

Reviewed By: simonpj, austin

Subscribers: qnikst, bgamari, mboes, carter, thomie, goldfire

Differential Revision: https://phabricator.haskell.org/D550

GHC Trac Issues: #7015

this impliments #9703 from ghc trac

Test Plan: still needs tests

Reviewers: cmsaperstein, ekmett, goldfire, austin

Reviewed By: goldfire, austin

Subscribers: goldfire, thomie, carter, simonmar

Differential Revision: https://phabricator.haskell.org/D353

GHC Trac Issues: #9703

Summary: This adds a few missing instances that can be automatically derived

Reviewers: hvr, goldfire, austin

Reviewed By: goldfire, austin

Subscribers: thomie, carter

Differential Revision: https://phabricator.haskell.org/D495

Test Plan: ./validate

Reviewers: austin

Reviewed By: austin

Subscribers: thomie, carter

Differential Revision: https://phabricator.haskell.org/D492

Reviewers: austin

Reviewed By: austin

Subscribers: thomie, carter

Differential Revision: https://phabricator.haskell.org/D481

GHC Trac Issues: #4900

Summary:
Provide a way to generate {-# LINE #-} pragmas when generating
Decs in Template Haskell. This allows more meaningful line
numbers to be reported in compile-time errors for dynamically
generated code.

Test Plan: Run test suite

Reviewers: austin, hvr

Reviewed By: austin

Subscribers: hvr, simonmar, ezyang, carter, thomie

Differential Revision: https://phabricator.haskell.org/D299

This is preparatory work for reintroducing SPECIALISEs that were lost
in d94de872

Differential Revision: https://phabricator.haskell.org/D214

This commit updates several submodules in order to bump
the upper bounds on `base` of most boot packages

Moreover, this updates some of the test-suite cases which have
version numbers hardcoded within.

However, I'm not sure if this commit didn't introduce the following
two test-failures

   ghc-api  T8628 [bad stdout] (normal)
   ghc-api  T8639_api [bad stdout] (normal)

This needs investigation

Summary:
This includes pretty much all the changes needed to make `Applicative`
a superclass of `Monad` finally. There's mostly reshuffling in the
interests of avoid orphans and boot files, but luckily we can resolve
all of them, pretty much. The only catch was that
Alternative/MonadPlus also had to go into Prelude to avoid this.

As a result, we must update the hsc2hs and haddock submodules.

Signed-off-by: Austin Seipp <austin@well-typed.com>

Test Plan: Build things, they might not explode horribly.

Reviewers: hvr, simonmar

Subscribers: simonmar

Differential Revision: https://phabricator.haskell.org/D13

This patch set makes us no longer assume that a package key is a human
readable string, leaving Cabal free to "do whatever it wants" to allocate
keys; we'll look up the PackageId in the database to display to the user.
This also means we have a new level of qualifier decisions to make at the
package level, and rewriting some Safe Haskell error reporting code to DTRT.

Additionally, we adjust the build system to use a new ghc-cabal output
Make variable PACKAGE_KEY to determine library names and other things,
rather than concatenating PACKAGE/VERSION as before.

Adds a new `-this-package-key` flag to subsume the old, erroneously named
`-package-name` flag, and `-package-key` to select packages by package key.

RFC: The md5 hashes are pretty tough on the eye, as far as the file
system is concerned :(

ToDo: safePkg01 test had its output updated, but the fix is not really right:
the rest of the dependencies are truncated due to the fact the we're only
grepping a single line, but ghc-pkg is wrapping its output.

ToDo: In a later commit, update all submodules to stop using -package-name
and use -this-package-key.  For now, we don't do it to avoid submodule
explosion.

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

Test Plan: validate

Reviewers: simonpj, simonmar, hvr, austin

Subscribers: simonmar, relrod, carter

Differential Revision: https://phabricator.haskell.org/D80

It's a bit confusing to have .gitignore files spread all over the
filesystem. This commit tries to consolidate those into one .gitignore
file per component. Moreover, we try to describe files to be ignored which
happen to have a common identifying pattern by glob patterns.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

I used this shell command to automatically generate the lists:

for i in `git ls-files -o --exclude-standard --directory`; do echo "`basename $i`" >> "`dirname "$i"`/.gitignore"; done

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

This is an attempt to address

  https://github.com/haskell/cabal/issues/1811



by replicating the less than 100 lines of code actually used from the
containers package into an internal non-exposed `template-haskell` module.

Moreover, `template-haskell` does not expose the `Map` type, so this change
should have no visible effect on the public API.

It may turn out that `Data.Map` is not necessary and that even a simple
list-based associative list (`Prelude.lookup`) may suffice. However, in
order to avoid any regressions, this commit takes the safe route and just
clones `Data.Map` for now.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

This adapts the source-repository entries to match the new situation of
base.git, ghc-prim.git, integer-gmp.git, integer-simple.git, and
template-haskell.git being folded into ghc.git

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

Due to backward-incompat changes in 57b662c (re #7021)

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>