9.8.1-alpha4 downloads

The 9.8.1-alpha1 directory does not appear in the listing https://downloads.haskell.org/ghc/ although the file is there (perhaps a caching issue?) It does appear in https://downloads.haskell.org/~ghc/ (with the tilde sign). Could you please also make the directory with the date https://downloads.haskell.org/~ghc/9.8.0.20230919/

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