Attempting to install ghc head using ghcup
  /opt/hostedtoolcache/ghcup/0.1.18.0/x64/ghcup install ghc -u https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-deb9-linux-integer-simple.tar.xz?job=validate-x86_64-linux-deb9-integer-simple head
  [ Info  ] downloading: https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-0.0.7.yaml as file /home/runner/.ghcup/cache/ghcup-0.0.7.yaml
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
  
    0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
    0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  [ Warn  ] Could not get download info, trying cached version (this may not be recent!)
  [ ...   ] If this problem persists, consider switching downloader via: 
  [ ...   ]     ghcup config set downloader Wget
  [ Warn  ] New cabal version available. To upgrade, run 'ghcup install cabal 3.8.1.0'
  [ Info  ] downloading: https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-deb9-linux-integer-simple.tar.xz?job=validate-x86_64-linux-deb9-integer-simple as file /home/runner/.ghcup/tmp/ghcup-3f85036592d7f958/ghc-x86_64-deb9-linux-integer-simple.tar.xz
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
  
    0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
    0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  curl: (22) The requested URL returned error: 404
  [ Error ] Download failed: Process "curl" with arguments ["-fL", "-o",
  [ ...   ]                                                 "/home/runner/.ghcup/tmp/ghcup-3f85036592d7f958/ghc-x86_64-deb9-linux-integer-simple.tar.xz.tmp",
  [ ...   ]                                                 "https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-deb9-linux-integer-simple.tar.xz?job=validate-x86_64-linux-deb9-integer-simple"] failed with exit code 22.
  [ Error ] Also check the logs in /home/runner/.ghcup/logs
Error: All install methods for ghc head failed