diff --git a/.travis.yml b/.travis.yml
index f7c3244..852da6c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,26 +13,26 @@ cache:
     - $HOME/.cabal/packages
     - $HOME/.cabal/store
 before_cache:
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/build-reports.log
+  - rm -fv  $HOME/.cabal/packages/hackage.haskell.org/build-reports.log
   # remove files that are regenerated by 'cabal update'
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/00-index.*
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/*.json
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.cache
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar.idx
-  - rm -rfv $CABALHOME/packages/head.hackage
+  - rm -fv  $HOME/.cabal/packages/hackage.haskell.org/00-index.*
+  - rm -fv  $HOME/.cabal/packages/hackage.haskell.org/*.json
+  - rm -fv  $HOME/.cabal/packages/hackage.haskell.org/01-index.cache
+  - rm -fv  $HOME/.cabal/packages/hackage.haskell.org/01-index.tar
+  - rm -fv  $HOME/.cabal/packages/hackage.haskell.org/01-index.tar.idx
+  - rm -rfv $HOME/.cabal/packages/head.hackage
 addons:
   apt:
     update: true
     packages:
+    # ghc requirements
     - libgmp-dev
     - libffi-dev
     - libncurses-dev
     - libtinfo5
 before-install:
-- export CABALHOME=$HOME/.cabal
 - export BOOTSTRAP_HASKELL_NONINTERACTIVE="true"
-- export PATH="${CABALHOME}/bin:${HOME}/.ghcup/bin:${HOME}/.local/bin:${PATH}"
+- export PATH="${HOME}/.cabal/bin:${HOME}/.ghcup/bin:${HOME}/.local/bin:${PATH}"
 - mkdir -p $HOME/.local/bin
 install:
 - curl --proto '=https' -o ghcup.sh --tlsv1.2 -sSf https://get-ghcup.haskell.org
diff --git a/appveyor.yml b/appveyor.yml
index 3800cfa..1e13d56 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,12 @@
 clone_folder: "c:\\zephyr"
+environment:
+  APPVEYOR_SSH_KEY: "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAs17FMCcqFt4GWaZdXilewWPveDFiS6NXuV5OKyosf6VkJLwu0mghEvxnMBdK4PyeUgalZzPRy8hb9JoGPkiD3SqZ0bOSUSY2NgUdUdbCDzuHdM3Ga/nSs2G/IvpY0c8Cyh1MCdYel4N2kQ3qWYkmBsfEScPXTV4DI/WhaSJzJBdhoz1NfNAZY+p6kmQ+6YIt2yziXFWT6p/JL0er+5KNd60ZE67n3crZ+X2fHNW/eUwL+VNUlSaejwRNAu0wgyvIiC+pdnET9NpvwcPooDU/FM5SkEWD4j1ivBUa0deCa0F5hmpEuok0oa2mac9+BN6gK3GmQ4fDKzrmpz2qsFQ0Cw=="
 cache:
   - c:\zephyr\dist-newstyle
+  - c:\Users\appveyor\AppData\Roaming\cabal\packages
+  - c:\Users\appveyor\AppData\Roaming\cabal\store
+init:
+  - sh: curl -sflL 'https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-ssh.sh' | bash -e -
 install:
   # http://help.appveyor.com/discussions/problems/6312-curl-command-not-found
   - set PATH=C:\Program Files\Git\mingw64\bin;%PATH%
@@ -37,3 +43,12 @@ deploy:
     force_update: true
     on:
       appveyor_repo_tag: true
+on_finish:
+  - rm -fv  c:\Users\appveyor\AppData\Roaming\cabal\packages\hackage.haskell.org\build-reports.log || true
+  # remove files that are regenerated by 'cabal update'
+  - rm -fv  c:\Users\appveyor\AppData\Roaming\cabal\packages\hackage.haskell.org\00-index.* || true
+  - rm -fv  c:\Users\appveyor\AppData\Roaming\cabal\packages\hackage.haskell.org\*.json || true
+  - rm -fv  c:\Users\appveyor\AppData\Roaming\cabal\packages\hackage.haskell.org\01-index.cache || true
+  - rm -fv  c:\Users\appveyor\AppData\Roaming\cabal\packages\hackage.haskell.org\01-index.tar || true
+  - rm -fv  c:\Users\appveyor\AppData\Roaming\cabal\packages\hackage.haskell.org\01-index.tar.idx || true
+  - rm -rfv c:\Users\appveyor\AppData\Roaming\cabal\packages\head.hackage || true