$ stack setup
Preparing to install GHC to an isolated location.
This will not interfere with any system-level installation.
Preparing to download ghc-8.0.2 ...
Already downloaded.
Unpacking GHC into /home/avi/.stack/programs/x86_64-linux/ghc-8.0.2.temp/ ...
Configuring GHC ...
Running /home/avi/.stack/programs/x86_64-linux/ghc-8.0.2.temp/ghc-8.0.2/configure --prefix=/home/avi/.stack/programs/x86_64-linux/ghc-8.0.2/ in directory /home/avi/.stack/programs/x86_64-linux/ghc-8.0.2.temp/ghc-8.0.2/ exited with ExitFailure 1

checking for path to top of build tree... 
/home/avi/.stack/programs/x86_64-linux/ghc-8.0.2.temp/ghc-8.0.2/configure: utils/ghc-pwd/dist-install/build/tmp/ghc-pwd-bindist: /bin/bash: bad interpreter: No such file or directory
configure: error: cannot determine current directory


Error: Error encountered while configuring GHC with
         /home/avi/.stack/programs/x86_64-linux/ghc-8.0.2.temp/ghc-8.0.2/configure --prefix=/home/avi/.stack/programs/x86_64-linux/ghc-8.0.2/
         run in /home/avi/.stack/programs/x86_64-linux/ghc-8.0.2.temp/ghc-8.0.2/

The following directories may now contain files, but won't be used by stack:
  - /home/avi/.stack/programs/x86_64-linux/ghc-8.0.2.temp/
  - /home/avi/.stack/programs/x86_64-linux/ghc-8.0.2/