Phyx writes:

Hmm I think this one belongs on the ghc trac.

The version doesn't seem to exist in master either https://github.com/ghc/ghc/commits/master/libraries/ghc-prim/ghc-prim.cabal and only exists in the 8.2 branch.

The commit and bug report it references #14171 doesn't seem to have any code changes to ghc-prim (that I can see). So I'm not sure why this was bumped.

So this version is a bit of a mystery..

On Tue, Dec 19, 2017, 20:47 Michael Snoyman wrote:

...

The Stackage issue tracker just received an issue about ghc-prim 0.5.1.1.

https://github.com/fpco/stackage/issues/3115

This version of the package has not been uploaded to Hackage, so:

* The Stackage snapshots refer to 0.5.1.1 * The stackage.org documentation shows version 0.5.1.1 * `stack unpack` and `cabal unpack` both fail on ghc-prim-0.5.1.1

Also, it appears that the GHC 8.2.2 release notes still refer to ghc-prim 0.5.1.0.

Indeed, keeping this in sync has always been a nightmare. I've reworked

The change in that commit fixes the semantics of retry# which is exported from GHC.Prim, so I felt that a minor bump at very least was necessary. the release notes in 8.4 to make this correct by construction.

...

I'm happy to file an issue for this, but last time this popped up it was unclear if the issue should be filed on GHC Trac or the Hackage Trustees issue tracker.

Herbert says he will upload ghc-prim in the next day or so.

Cheers, - Ben