travis: Use cabal version 3.0

Author: erikd

.travis.yml

@@ -14,17 +14,16 @@ env:
 before_install:
  - sudo add-apt-repository -y ppa:hvr/ghc
  - sudo apt-get update
- - sudo apt-get install alex-3.1.7 happy-1.19.5 cabal-install-1.24 ghc-$GHCVER
+ - sudo apt-get install alex-3.1.7 happy-1.19.5 cabal-install-3.0 ghc-$GHCVER
  - export PATH=/opt/cabal/bin:/opt/ghc/$GHCVER/bin:/opt/alex/3.1.7/bin:/opt/happy/1.19.5/bin:$PATH
 
 install:
- - cabal-1.24 update
- - cabal-1.24 install --only-dependencies --enable-tests;
+ - cabal-3.0 update
 
 script:
- - cabal-1.24 configure --enable-tests
- - cabal-1.24 build
- - dist/build/testsuite/testsuite
- - cabal-1.24 check
- - cabal-1.24 haddock
- - cabal-1.24 sdist
+ - cabal-3.0 configure --enable-tests
+ - cabal-3.0 build
+ - cabal-3.0 test --test-show-details=streaming
+ - cabal-3.0 check
+ - cabal-3.0 haddock
+ - cabal-3.0 sdist