cabal2spec: update to latest version

Author: peti

.travis.yml

@@ -44,12 +44,9 @@ matrix:
     # env: TEST=--disable-tests BENCH=--disable-benchmarks
       addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-8.2.2], sources: [hvr-ghc]}}
     - compiler: "ghc-8.4.1"
-      env: GHCHEAD=true
+    # env: TEST=--disable-tests BENCH=--disable-benchmarks
       addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-8.4.1], sources: [hvr-ghc]}}
 
-  allow_failures:
-    - compiler: "ghc-8.4.1"
-
 before_install:
   - HC=${CC}
   - HCPKG=${HC/ghc/ghc-pkg}
@@ -71,24 +68,9 @@ install:
   - travis_retry cabal update -v
   - "sed -i.bak 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config"
   - rm -fv cabal.project cabal.project.local
-  # Overlay Hackage Package Index for GHC HEAD: https://github.com/hvr/head.hackage
-  - |
-    if $GHCHEAD; then
-      sed -i.bak 's/-- allow-newer:.*/allow-newer: *:base, *:template-haskell, *:ghc, *:Cabal/' ${HOME}/.cabal/config
-
-      echo 'repository head.hackage'                                                        >> ${HOME}/.cabal/config
-      echo '   url: http://head.hackage.haskell.org/'                                       >> ${HOME}/.cabal/config
-      echo '   secure: True'                                                                >> ${HOME}/.cabal/config
-      echo '   root-keys: 07c59cb65787dedfaef5bd5f987ceb5f7e5ebf88b904bbd4c5cbdeb2ff71b740' >> ${HOME}/.cabal/config
-      echo '              2e8555dde16ebd8df076f1a8ef13b8f14c66bad8eafefd7d9e37d0ed711821fb' >> ${HOME}/.cabal/config
-      echo '              8f79fd2389ab2967354407ec852cbe73f2e8635793ac446d09461ffb99527f6e' >> ${HOME}/.cabal/config
-      echo '   key-threshold: 3'                                                            >> ${HOME}/.cabal.config
-
-      cabal new-update head.hackage -v
-    fi
   - grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
-  - if [ $HCNUMVER -ge 80000 ]; then cabal new-install -w ${HC} --symlink-bindir=$HOME/.local/bin doctest --constraint='doctest ==0.13.*'; fi
-  - if [ $HCNUMVER -eq 80202 ]; then cabal new-install -w ${HC} --symlink-bindir=$HOME/.local/bin hlint --constraint='hlint ==2.0.*'; fi
+  - if [ $HCNUMVER -ge 80000 ]; then cabal new-install -w ${HC} --symlink-bindir=$HOME/.local/bin doctest --constraint='doctest ==0.14.*'; fi
+  - if [ $HCNUMVER -eq 80202 ]; then cabal new-install -w ${HC} --symlink-bindir=$HOME/.local/bin hlint --constraint='hlint ==2.1.*'; fi
   - "printf 'packages: \".\"\\n' > cabal.project"
   - cat cabal.project
   - if [ -f "./configure.ac" ]; then