GHC Error message

cabal-helper-wrapper: Installing a private copy of Cabal because we couldn't
find the right version in your global/user package-db, this might take a
while but will only happen once per Cabal version you're using.

If anything goes horribly wrong just delete this directory and try again:
    /home/rob/.ghc-mod/cabal-helper

If you want to avoid this automatic installation altogether install
version 1.18.1.3 of Cabal manually (into your user or global package-db):
    $ cabal install Cabal --constraint "Cabal == 1.18.1.3"

Installing Cabal 1.18.1.3 ...
Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: Cabal (user goal)
rejecting: Cabal-1.22.4.0/installed-82f..., 1.22.4.0, 1.22.3.0, 1.22.2.0,
1.22.1.1, 1.22.1.0, 1.22.0.0, 1.20.0.3, 1.20.0.2, 1.20.0.1, 1.20.0.0,
1.18.1.6, 1.18.1.5, 1.18.1.4 (global constraint requires ==1.18.1.3)
trying: Cabal-1.18.1.3
trying: base-4.8.1.0/installed-4f7... (dependency of Cabal-1.18.1.3)
trying: array-0.5.1.0/installed-d42... (dependency of Cabal-1.18.1.3)
next goal: deepseq (dependency of Cabal-1.18.1.3)
rejecting: deepseq-1.4.1.1/installed-8fb..., 1.4.1.2, 1.4.1.1, 1.4.1.0,
1.4.0.0 (conflict: Cabal => deepseq>=1.3 && <1.4)
rejecting: deepseq-1.3.0.2 (conflict: base==4.8.1.0/installed-4f7..., deepseq
=> base>=4.3 && <4.8)
rejecting: deepseq-1.3.0.1, 1.3.0.0 (conflict:
array==0.5.1.0/installed-d42..., deepseq => array>=0.1 && <0.5)
rejecting: deepseq-1.2.0.1, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0, 1.0.0.0
(conflict: Cabal => deepseq>=1.3 && <1.4)
Dependency tree exhaustively searched.
cabal-helper-wrapper: Installing Cabal version 1.18.1.3 failed.

You have the following choices to fix this:

- The easiest way to try and fix this is just reconfigure the project and try
  again:
        $ cabal clean && cabal configure

- If that fails you can try to install the version of Cabal mentioned above
  into your global/user package-db somehow, you'll probably have to fix
  something otherwise it wouldn't have failed above:
        $ cabal install Cabal --constraint 'Cabal == 1.18.1.3'

- If you're using `Build-Type: Simple`:
  - You can see if you can reinstall your cabal-install executable while
    having it linked to a version of Cabal that's available in you
    package-dbs or can be built automatically:
        $ ghc-pkg list | grep Cabal  # find an available Cabal version
            Cabal-W.X.Y.Z
        $ cabal install cabal-install --constraint 'Cabal == W.X.*'
    Afterwards you'll have to reconfigure your project:
        $ cabal clean && cabal configure

- If you're using `Build-Type: Custom`:
  - Have cabal-install rebuild your Setup.hs executable with a version of the
    Cabal library that you have available in your global/user package-db:
        $ cabal clean && cabal configure
    You might also have to install some version of the Cabal to do this:
        $ cabal install Cabal


ghc-mod: GMEProcess "readProcessStderrChan" "/home/rob/.cabal/libexec/cabal-helper-wrapper" ["/home/rob/code/haskell/hdphmaxclique","/home/rob/code/haskell/hdphmaxclique/dist"] (Left 1)
cabal-helper-wrapper: Installing a private copy of Cabal because we couldn't
find the right version in your global/user package-db, this might take a
while but will only happen once per Cabal version you're using.

If anything goes horribly wrong just delete this directory and try again:
    /home/rob/.ghc-mod/cabal-helper

If you want to avoid this automatic installation altogether install
version 1.18.1.3 of Cabal manually (into your user or global package-db):
    $ cabal install Cabal --constraint "Cabal == 1.18.1.3"

Installing Cabal 1.18.1.3 ...
Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: Cabal (user goal)
rejecting: Cabal-1.22.4.0/installed-82f..., 1.22.4.0, 1.22.3.0, 1.22.2.0,
1.22.1.1, 1.22.1.0, 1.22.0.0, 1.20.0.3, 1.20.0.2, 1.20.0.1, 1.20.0.0,
1.18.1.6, 1.18.1.5, 1.18.1.4 (global constraint requires ==1.18.1.3)
trying: Cabal-1.18.1.3
trying: base-4.8.1.0/installed-4f7... (dependency of Cabal-1.18.1.3)
trying: array-0.5.1.0/installed-d42... (dependency of Cabal-1.18.1.3)
next goal: deepseq (dependency of Cabal-1.18.1.3)
rejecting: deepseq-1.4.1.1/installed-8fb..., 1.4.1.2, 1.4.1.1, 1.4.1.0,
1.4.0.0 (conflict: Cabal => deepseq>=1.3 && <1.4)
rejecting: deepseq-1.3.0.2 (conflict: base==4.8.1.0/installed-4f7..., deepseq
=> base>=4.3 && <4.8)
rejecting: deepseq-1.3.0.1, 1.3.0.0 (conflict:
array==0.5.1.0/installed-d42..., deepseq => array>=0.1 && <0.5)
rejecting: deepseq-1.2.0.1, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0, 1.0.0.0
(conflict: Cabal => deepseq>=1.3 && <1.4)
Dependency tree exhaustively searched.
cabal-helper-wrapper: Installing Cabal version 1.18.1.3 failed.

You have the following choices to fix this:

- The easiest way to try and fix this is just reconfigure the project and try
  again:
        $ cabal clean && cabal configure

- If that fails you can try to install the version of Cabal mentioned above
  into your global/user package-db somehow, you'll probably have to fix
  something otherwise it wouldn't have failed above:
        $ cabal install Cabal --constraint 'Cabal == 1.18.1.3'

- If you're using `Build-Type: Simple`:
  - You can see if you can reinstall your cabal-install executable while
    having it linked to a version of Cabal that's available in you
    package-dbs or can be built automatically:
        $ ghc-pkg list | grep Cabal  # find an available Cabal version
            Cabal-W.X.Y.Z
        $ cabal install cabal-install --constraint 'Cabal == W.X.*'
    Afterwards you'll have to reconfigure your project:
        $ cabal clean && cabal configure

- If you're using `Build-Type: Custom`:
  - Have cabal-install rebuild your Setup.hs executable with a version of the
    Cabal library that you have available in your global/user package-db:
        $ cabal clean && cabal configure
    You might also have to install some version of the Cabal to do this:
        $ cabal install Cabal


ghc-mod: GMEProcess "readProcessStderrChan" "/home/rob/.cabal/libexec/cabal-helper-wrapper" ["/home/rob/code/haskell/hdphmaxclique","/home/rob/code/haskell/hdphmaxclique/dist"] (Left 1)