hsc2hs-0.68.7 hangs while building nonlinear-optimization-0.3.12.1

[adamConnerSax]

(Tried to select "bug" template but it wouldn't let me select any.)
I just installed ghc8.10.5 (via ghcup) on macOS Big Sur (11.4).
I did a "cabal update" (cabal 3.4) and then started rebuilding a library, noticed it hanging. Re-ran "cabal build" with "-v -j1" and got a lot of output, ending with:

creating dist/build
creating dist/build/autogen
creating dist/build/autogen
Preprocessing library for nonlinear-optimization-0.3.12.1..
creating dist/build/Numeric/Optimization/Algorithms
creating dist/build/Numeric/Optimization
creating dist/build/Numeric
creating dist/build/Numeric/Optimization
creating dist/build/Numeric/Optimization/Algorithms
/Users/adam/.ghcup/bin/hsc2hs '@dist/build/Numeric/Optimization/Algorithms/hsc2hs-response54797-14.txt'

Where it simply hangs. hsc2hs is running but not using significant CPU or memory.

Hand-installing hsc2hs 0.68.8 from github and replacing the ghcup links so it uses that one seems to solve the problem.

Reported this at the ghc gitlab and @bgamari suggested reporting here.

[phadej]

I'm quite sure @hvr won't be around making the release, and looking at https://hackage.haskell.org/package/hsc2hs/maintainers/ Ben is the other person who could do the release...

[xich]

I also ran into this problem with GHC 8.10.5. When I tried to cabal install cabal-install, the build hung forever on the network package. Built network with -v and tailed the log file, and found it was hanging on hsc2hs.

Cloned this repo and built/installed hsc2hs 0.68.8 manually, which fixed the problem.

It looks like 0.68.8 was tagged over six months ago. Can somebody release it? cc @bgamari

[phadej]

0.68.8 is released, this issue can be closed