.travis.yml: test with GHC 8.8.1

.travis.yml

@@ -245,6 +245,83 @@ matrix:
       # Enable caching.
       sudo: false
 
+      # Caching so the next build will be fast too.
+      # These caches are the same between resolvers, but this is fine, 
+      # as Stack differentiates between its resolvers.
+      cache:
+        directories:
+        - $HOME/.ghc
+        - $HOME/.cabal
+        - $HOME/.stack
+
+      # Enable packages we need.
+      # Not all packages are available – see before_install for from-source builds. 
+      addons:
+        apt:
+          packages:
+            - libmagic-dev     # magic
+            - libgmp-dev       # ghc
+            - libblas-dev      # hmatrix
+            - liblapack-dev    # hmatrix
+            - libcairo2-dev    # cairo
+            - libpango1.0-dev  # pango
+            - libzmq3-dev      # zmq
+
+      before_install:
+          # Download and unpack the stack executable
+        - export PATH=$HOME/.local/bin:$PATH
+        - mkdir -p ~/.local/bin
+        - curl -L https://github.com/commercialhaskell/stack/releases/download/v1.9.3/stack-1.9.3-linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
+
+          # Upgrades to avoid later build problems
+        - pip install -U pip
+        - pip install -U setuptools
+
+          # Install from requirements.txt
+        - pip install -r requirements.txt
+
+      # This step takes the longest, and is what generates the Stack cache. 
+      install:
+        - |
+          # Used to avoid 'source and destination file are the same' error
+          mv $USE_STACK_YAML intermediate-stack.yaml
+          mv intermediate-stack.yaml stack.yaml
+
+          echo "apply-ghc-options: everything" >> stack.yaml
+
+        - stack setup
+        # - stack install gtk2hs-buildtools --fast
+        - stack build hmatrix --fast
+        - stack build --dependencies-only --fast
+
+      script:
+        - stack test --no-terminal --fast
+        - |
+          set -e
+          if $DISPLAY; then
+              TOP=$(pwd)
+              stack build --no-terminal --fast
+
+              # Ensure that ipython-kernel examples build successfully.
+              stack build ipython-kernel --flag ipython-kernel:examples --fast
+
+              # Ensure that IHaskell notebook remains unchanged.
+              # Run the notebook to regenerate the outputs, then compare the new notebook to the old one.
+              stack install --fast
+              stack exec -- ihaskell install --stack
+              test/acceptance.nbconvert.sh stack exec -- jupyter nbconvert
+          fi
+    - env: DISPLAY=true   USE_STACK_YAML="stack-8.8.yaml"     # GHC 8.8.1
+      language: python
+      dist: xenial
+      # Test against different stack LTS versions.
+
+      # Choose a lightweight base image; we provide our own build tools.
+      python: "3.6"
+
+      # Enable caching.
+      sudo: false
+
       # Caching so the next build will be fast too.
       # These caches are the same between resolvers, but this is fine, 
       # as Stack differentiates between its resolvers.

stack-8.8.yaml

+resolver: nightly-2019-10-05
+
+flags: {}
+packages:
+    - .
+    - ./ipython-kernel
+    - ./ghc-parser
+    # - ./ihaskell-display/ihaskell-aeson
+    # - ./ihaskell-display/ihaskell-blaze
+    # - ./ihaskell-display/ihaskell-charts
+    # - ./ihaskell-display/ihaskell-diagrams
+    # - ./ihaskell-display/ihaskell-gnuplot
+    # - ./ihaskell-display/ihaskell-hatex
+    # - ./ihaskell-display/ihaskell-juicypixels
+    # - ./ihaskell-display/ihaskell-magic
+    # - ./ihaskell-display/ihaskell-plot
+    # - ./ihaskell-display/ihaskell-static-canvas
+    # - ./ihaskell-display/ihaskell-widgets
+
+# extra-deps:
+# - Chart-cairo-1.9.1
+# - diagrams-cairo-1.4.1
+# - cairo-0.13.6.0
+# - pango-0.13.6.0
+# - glib-0.13.7.0
+# - gtk2hs-buildtools-0.13.5.0
+# - magic-1.1
+# - plot-0.2.3.9
+
+ghc-options:
+  # Eventually we want "$locals": -Wall -Wpartial-fields -Werror
+  # ghc-parser: -Wall -Wpartial-fields -Werror
+  # ihaskell: -Wall -Wpartial-fields -Werror
+  # ihaskell-widgets: -Wall -Wpartial-fields -Werror
+
+docker:
+    repo: "ihaskell-dev:latest"
+    enable: false
+
+nix:
+  enable: false
+  packages:
+    - blas
+    - cairo
+    - file
+    - gcc
+    - gfortran.cc.lib
+    - liblapack
+    - ncurses
+    - pango
+    - pkgconfig
+    - zeromq
+    - zlib