
Hi everyone, We are being asked to consider pull request #143. This proposal removes the `*` symbol as a synonym for `Type`, finishing the work started by the new `-XNoStarIsType` extension. This proposal involves a protracted but warranted transition period. In short: 1. `-XNoStarIsType` will be introduced in GHC 8.6 2. Warnings will be introduced in GHC 8.8, increasing in visibility in later releases. 3. `-XStarIsType` will be enabled by default starting 12 releases (roughly 7 years from now) after GHC 8.6. 4. 15 releases (8.5 years from now) after GHC 8.6 `-XNoStarIsType` will be removed. The reason for this breakage is that this change will have wide-spread consequences: in addition to an estimated 25% of Hackage being affected, a generation of written documentation and pedagogical material will need to be revised. While the costs of the change are high, so are the benefits. `*` is an awkward special case in GHC's syntax and is quite hard to search for. Moreover, the `StarIsType` will present a significant hurdle to the future introduction of `DependentHaskell` since `*` may then signify either term-level numeric multiplication or `Type`. For these reasons my recommendation is that we accept the proposal. Cheers, - Ben