Support latest GHCs, update maintenance info (#6)

* Support latest GHCs, update maintenance info

* Update .cabal version

.github/CODEOWNERS

@@ -0,0 +1 @@
+*  @chshersh @vrom911

.gitignore

@@ -1,4 +1,6 @@
+### Haskell
 dist
+dist-*
 cabal-dev
 *.o
 *.hi
@@ -9,14 +11,48 @@ cabal-dev
 *.prof
 *.aux
 *.hp
+*.eventlog
 .virtualenv
 .hsenv
 .hpc
-.stack-work/
 .cabal-sandbox/
 cabal.sandbox.config
 cabal.config
-TAGS
-.DS_Store
+cabal.project.local
+.HTF/
+.ghc.environment*
+
+# Stack
+.stack-work/
+stack.yaml.lock
+
+# Nix
+result
+
+### IDE/support
+# Vim
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
 *~
+tags
+
+# IntellijIDEA
+.idea/
+.ideaHaskellLib/
+*.iml
+
+# Atom
+.haskell-ghc-mod.json
+
+# VS
+.vscode/
+
+# Emacs
 *#
+.dir-locals.el
+TAGS
+
+# other
+.DS_Store

.stylish-haskell.yaml

@@ -0,0 +1,61 @@
+steps:
+  - simple_align:
+      cases: true
+      top_level_patterns: true
+      records: true
+
+  # Import cleanup
+  - imports:
+      align: none
+      list_align: after_alias
+      pad_module_names: false
+      long_list_align: inline
+      empty_list_align: inherit
+      list_padding: 4
+      separate_lists: true
+      space_surround: false
+
+  - language_pragmas:
+      style: vertical
+      remove_redundant: true
+
+  # Remove trailing whitespace
+  - trailing_whitespace: {}
+
+columns: 100
+
+newline: native
+
+language_extensions:
+  - BangPatterns
+  - ConstraintKinds
+  - DataKinds
+  - DefaultSignatures
+  - DeriveAnyClass
+  - DeriveDataTypeable
+  - DeriveGeneric
+  - DerivingStrategies
+  - DerivingVia
+  - ExplicitNamespaces
+  - FlexibleContexts
+  - FlexibleInstances
+  - FunctionalDependencies
+  - GADTs
+  - GeneralizedNewtypeDeriving
+  - InstanceSigs
+  - KindSignatures
+  - LambdaCase
+  - MultiParamTypeClasses
+  - MultiWayIf
+  - NamedFieldPuns
+  - NoImplicitPrelude
+  - OverloadedStrings
+  - QuasiQuotes
+  - RecordWildCards
+  - ScopedTypeVariables
+  - StandaloneDeriving
+  - TemplateHaskell
+  - TupleSections
+  - TypeApplications
+  - TypeFamilies
+  - ViewPatterns

.travis.yml

@@ -1,97 +1,52 @@
-# This file has been generated -- see https://github.com/hvr/multi-ghc-travis
-language: c
-sudo: false
+sudo: true
+language: haskell
+
+git:
+  depth: 5
+
+cabal: "3.0"
 
 cache:
   directories:
-    - $HOME/.cabsnap
-    - $HOME/.cabal/packages
-
-before_cache:
-  - rm -fv $HOME/.cabal/packages/hackage.haskell.org/build-reports.log
-  - rm -fv $HOME/.cabal/packages/hackage.haskell.org/00-index.tar
+    - "$HOME/.cabal/store"
+    - "$HOME/.stack"
+    - "$TRAVIS_BUILD_DIR/.stack-work"
 
 matrix:
   include:
-    - env: CABALVER=1.16 GHCVER=7.4.2
-      compiler: ": #GHC 7.4.2"
-      addons: {apt: {packages: [cabal-install-1.16,ghc-7.4.2], sources: [hvr-ghc]}}
-    - env: CABALVER=1.16 GHCVER=7.6.3
-      compiler: ": #GHC 7.6.3"
-      addons: {apt: {packages: [cabal-install-1.16,ghc-7.6.3], sources: [hvr-ghc]}}
-    - env: CABALVER=1.18 GHCVER=7.8.4
-      compiler: ": #GHC 7.8.4"
-      addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.4], sources: [hvr-ghc]}}
-    - env: CABALVER=1.22 GHCVER=7.10.3
-      compiler: ": #GHC 7.10.3"
-      addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.3], sources: [hvr-ghc]}}
-    - env: CABALVER=1.24 GHCVER=8.0.1
-      compiler: ": #GHC 8.0.1"
-      addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.1], sources: [hvr-ghc]}}
+    # Cabal
+    - ghc: 8.2.2
+    - ghc: 8.4.4
+    - ghc: 8.6.5
+    - ghc: 8.8.1
 
-before_install:
- - unset CC
- - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
+    # stack
+    - ghc: 8.8.1
+      env: STACK_YAML="$TRAVIS_BUILD_DIR/stack.yaml"
 
 install:
- - cabal --version
- - echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
- - if [ -f $HOME/.cabal/packages/hackage.haskell.org/00-index.tar.gz ];
-   then
-     zcat $HOME/.cabal/packages/hackage.haskell.org/00-index.tar.gz >
-          $HOME/.cabal/packages/hackage.haskell.org/00-index.tar;
-   fi
- - travis_retry cabal update -v
- - sed -i 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config
- - if [ $GHCVER != 7.4.2 ] && [ $GHCVER != 7.6.3 ];
-     then cabal install --only-dependencies --enable-tests --enable-benchmarks --dry -v > installplan.txt;
-     else cabal install --only-dependencies --enable-tests --dry -v > installplan.txt;
-   fi
- - sed -i -e '1,/^Resolving /d' installplan.txt; cat installplan.txt
-
-# check whether current requested install-plan matches cached package-db snapshot
- - if diff -u installplan.txt $HOME/.cabsnap/installplan.txt;
-   then
-     echo "cabal build-cache HIT";
-     rm -rfv .ghc;
-     cp -a $HOME/.cabsnap/ghc $HOME/.ghc;
-     cp -a $HOME/.cabsnap/lib $HOME/.cabsnap/share $HOME/.cabsnap/bin $HOME/.cabal/;
-   else
-     echo "cabal build-cache MISS";
-     rm -rf $HOME/.cabsnap;
-     mkdir -p $HOME/.ghc $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin;
-     if [ $GHCVER != 7.4.2 ] && [ $GHCVER != 7.6.3 ];
-       then cabal install --only-dependencies --enable-tests --enable-benchmarks;
-       else cabal install --only-dependencies --enable-tests;
-     fi
-   fi
+  - |
+    if [ -z "$STACK_YAML" ]; then
+      ghc --version
+      cabal --version
+      cabal update
+      cabal build --enable-tests --enable-benchmarks
+    else
+      # install stack
+      curl -sSL https://get.haskellstack.org/ | sh
+
+      # build project with stack
+      stack --version
+      stack build --system-ghc --test --no-run-tests --bench --no-run-benchmarks
+    fi
 
-# snapshot package-db on cache miss
- - if [ ! -d $HOME/.cabsnap ];
-   then
-      echo "snapshotting package-db to build-cache";
-      mkdir $HOME/.cabsnap;
-      cp -a $HOME/.ghc $HOME/.cabsnap/ghc;
-      cp -a $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin installplan.txt $HOME/.cabsnap/;
-   fi
-
-# Here starts the actual work to be performed for the package under test;
-# any command which exits with a non-zero exit code causes the build to fail.
 script:
- - if [ -f configure.ac ]; then autoreconf -i; fi
- # building benchmarks fails on earlier GHCs for some reason
- - if [ $GHCVER != 7.4.2 ] && [ $GHCVER != 7.6.3 ];
-     then cabal configure --enable-tests --enable-benchmarks;
-     else cabal configure --enable-tests;
-   fi
- - cabal build --ghc-options=-Werror
- - cabal test
- - cabal sdist   # tests that a source-distribution can be generated
-
-# Check that the resulting source distribution can be built & installed.
-# If there are no other `.tar.gz` files in `dist`, this can be even simpler:
-# `cabal install --force-reinstalls dist/*-*.tar.gz`
- - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz &&
-   (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
-
-# EOF
+  - |
+    if [ -z "$STACK_YAML" ]; then
+      cabal test --enable-tests
+    else
+      stack test --no-terminal --system-ghc
+    fi
+
+notifications:
+  email: false

CHANGELOG.md

@@ -1,15 +1,28 @@
-# 0.3.1.0
+# Changelog
+
+`ilist` uses [PVP Versioning][1].
+The changelog is available [on GitHub][2].
+
+## 0.4.0.0 — Dec 26, 2019
+
+* Support GHC-8.8, GHC-8.6, GHC-8.4, GHC-8.2. Drop older GHC versions support.
+* Update maintenance info.
+
+## 0.3.1.0
 
 * Added `ireplicateM` and `ireplicateM_`.
 
-# 0.3.0.0
+## 0.3.0.0
 
 * `ifind` now returns the index alongside with the value (same as in `lens`).
 
-# 0.2.0.0
+## 0.2.0.0
 
 * `izipWithM` and `izipWithM_` have been generalised from `Monad` to `Applicative` (which mimics what was done in base-4.9).
 
-# 0.1.0.0
+## 0.1.0.0
 
 First release.
+
+[1]: https://pvp.haskell.org
+[2]: https://github.com/kowainik/ilist/releases