title: Stack install Yesod fails at GHC decompressing
body: <p>Running <code>stack install yesod-bin --install-ghc</code> fails at ghc decompressing with message: "Problem while decompressing C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4.tar.xz"</p>
  
  <p>I try to run this command on Windows 10 64 bit, cmd, with the latest Haskell platform version 8.6.5-core-x86_64 after creating a project with yesod-sqlite template. I've tried a different version as well, with same result. <code>stack install yesod-bin-1.4.11 --install-ghc</code></p>
  
  <pre><code>&gt; stack install yesod-bin --install-ghc
  Preparing to install GHC to an isolated location.
  This will not interfere with any system-level installation.
  Downloaded ghc-8.4.4.
  Downloaded 7z.dll.
  Downloaded 7z.exe.
  Problem while decompressing C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4.tar.xz
  </code></pre>
  
  <p><code>stack build</code> retries and fails at the same point. I'd expect some proper install instead.</p>
  
  <p><strong>Update</strong>: <code>stack setup --verbose</code> output:</p>
  
  <pre><code>Version 1.9.3, Git revision 40cf7b37526b86d1676da82167ea8758a854953b (6211 commits) x86_64 hpack-0.31.1
  2019-06-16 16:47:58.662299: [debug] Checking for project config at: E:\Dev\haskell\dosey\stack.yaml
  2019-06-16 16:47:58.666295: [debug] Loading project config file stack.yaml
  2019-06-16 16:47:58.675310: [debug] Decoding build plan from: C:\sr\build-plan\lts-12.26.yaml
  2019-06-16 16:47:58.678295: [debug] Trying to decode C:\sr\build-plan-cache\lts-12.26.cache
  2019-06-16 16:47:58.689295: [debug] Success decoding C:\sr\build-plan-cache\lts-12.26.cache
  2019-06-16 16:47:58.696299: [debug] Potential GHC builds: standard
  2019-06-16 16:47:58.698299: [debug] Found already installed GHC builds:
  2019-06-16 16:47:59.145295: [debug] Trying to setup GHC build: standard
  2019-06-16 16:47:59.147298: [info] Preparing to install GHC to an isolated location.
  2019-06-16 16:47:59.149296: [info] This will not interfere with any system-level installation.
  2019-06-16 16:47:59.151297: [debug] Downloading from https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-unknown-mingw32.tar.xz to C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4.tar.xz ...
  2019-06-16 16:47:59.153294: [debug] Will check against sha1 hash: 697db44cdf7fdf1a6d83ada61e36857f2e241e3d
  2019-06-16 16:47:59.157298: [debug] Will check against sha256 hash: da29dbb0f1199611c7d5bb7b0dd6a7426ca98f67dfd6da1526b033cd3830dc05
  2019-06-16 16:48:00.717297: [info] Already downloaded.
  2019-06-16 16:48:00.721299: [debug] Downloading from https://github.com/fpco/minghc/blob/master/bin/7z.dll?raw=true to C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\7z.dll ...
  2019-06-16 16:48:00.724298: [debug] Will check against sha1 hash: 168a288d4456f0473f66e86a2d6fec4eb6f4b993
  2019-06-16 16:48:00.729295: [info] Already downloaded.
  2019-06-16 16:48:00.731294: [debug] Downloading from https://github.com/fpco/minghc/blob/master/bin/7z.exe?raw=true to C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\7z.exe ...
  2019-06-16 16:48:00.738296: [debug] Will check against sha1 hash: 187dff8a3327da87050f678579816e5bae40c632
  2019-06-16 16:48:00.742294: [info] Already downloaded.
  2019-06-16 16:48:00.744297: [debug] Run process: C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\7z.exe x -oC:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4-tmp1496\ -y C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4.tar.xz
  2019-06-16 16:48:02.169297: [debug] Process finished in 1423ms: C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\7z.exe x -oC:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4-tmp1496\ -y C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4.tar.xz
  Problem while decompressing C:\Users\user\AppData\Local\Programs\stack\x86_64-windows\ghc-8.4.4.tar.xz
  </code></pre>