#9586: Implement Traversable/Foldable-Burning-Bridges Proposal -------------------------------------+------------------------------------- Reporter: hvr | Owner: hvr Type: task | Status: new Priority: normal | Milestone: 7.10.1 Component: | Version: libraries/base | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Difficult (2-5 Unknown/Multiple | days) Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: Phab:D209 | -------------------------------------+------------------------------------- Comment (by Herbert Valerio Riedel <hvr@…>): In [changeset:"c0fa383d9109800a4e46a81b418f1794030ba1bd/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="c0fa383d9109800a4e46a81b418f1794030ba1bd" Export `Traversable()` and `Foldable()` from Prelude This exposes *only* the type-classes w/o any of their methods. This is the very first step for implementing BPP (see #9586), which already requires breaking up several import-cycles leading back to `Prelude`. Ideally, importing `Prelude` should be avoided in most `base` modules, as `Prelude` does not define any entities, but rather re-exports existing ones. Test Plan: validate passes Reviewers: ekmett, austin Reviewed By: ekmett, austin Subscribers: simonmar, ezyang, carter Differential Revision: https://phabricator.haskell.org/D209 GHC Trac Issues: #9586 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9586#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler