Enable non-canonical Monad instance warnings for stage1/2

This makes use of the new facility introduced via
14d0f7f1221db758cd06a69f53803d9d0150164a which allows
to have certain flags passed only to the non-bootstrapping
GHC. This is needed because sometimes we can't assume the
existence of a certain flag in the bootstrapping compiler
which was only added recently to GHC HEAD.

This also updates the haddock submodule to fix a few
remaining noncanonical instance definitions.

Differential Revision: https://phabricator.haskell.org/D1571

1 files changed, 0 insertions, 0 deletions

diff --git a/utils/haddock b/utils/haddock
-Subproject 42b2cfc595f1ee62d1c1b8513c5df1d92709c06
+Subproject a6deefad581cbeb62048826bc1d626c41a0dd56