diff --git a/.hlint.yaml b/.hlint.yaml
new file mode 100644
--- /dev/null
+++ b/.hlint.yaml
@@ -0,0 +1,3 @@
+- arguments: [--cpp-define=HLINT, --cpp-ansi]
+
+- ignore: {name: Use section}
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
--- a/.travis.yml
+++ /dev/null
@@ -1,159 +0,0 @@
-# This Travis job script has been generated by a script via
-#
-#   runghc make_travis_yml_2.hs '-o' '.travis.yml' '--ghc-head' '--irc-channel=irc.freenode.org#haskell-lens' '--no-no-tests-no-bench' '--no-unconstrained' 'cabal.project'
-#
-# For more information, see https://github.com/hvr/multi-ghc-travis
-#
-language: c
-sudo: false
-
-git:
-  submodules: false  # whether to recursively clone submodules
-
-notifications:
-  irc:
-    channels:
-      - "irc.freenode.org#haskell-lens"
-    skip_join: true
-    template:
-      - "\x0313distributive\x03/\x0306%{branch}\x03 \x0314%{commit}\x03 %{build_url} %{message}"
-
-cache:
-  directories:
-    - $HOME/.cabal/packages
-    - $HOME/.cabal/store
-
-before_cache:
-  - rm -fv $HOME/.cabal/packages/hackage.haskell.org/build-reports.log
-  # remove files that are regenerated by 'cabal update'
-  - 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
-
-matrix:
-  include:
-    - compiler: "ghc-8.6.1"
-      env: GHCHEAD=true
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-8.6.1], sources: [hvr-ghc]}}
-    - compiler: "ghc-8.4.3"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-8.4.3], sources: [hvr-ghc]}}
-    - compiler: "ghc-8.2.2"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-8.2.2], sources: [hvr-ghc]}}
-    - compiler: "ghc-8.0.2"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-8.0.2], sources: [hvr-ghc]}}
-    - compiler: "ghc-7.10.3"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.10.3], sources: [hvr-ghc]}}
-    - compiler: "ghc-7.8.4"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.8.4], sources: [hvr-ghc]}}
-    - compiler: "ghc-7.6.3"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.6.3], sources: [hvr-ghc]}}
-    - compiler: "ghc-7.4.2"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.4.2], sources: [hvr-ghc]}}
-    - compiler: "ghc-7.2.2"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.2.2], sources: [hvr-ghc]}}
-    - compiler: "ghc-7.0.4"
-    # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.0.4], sources: [hvr-ghc]}}
-    - compiler: "ghc-head"
-      env: GHCHEAD=true
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-head], sources: [hvr-ghc]}}
-
-  allow_failures:
-    - compiler: "ghc-head"
-    - compiler: "ghc-7.0.4"
-    - compiler: "ghc-7.2.2"
-    - compiler: "ghc-8.6.1"
-
-before_install:
-  - HC=${CC}
-  - HCPKG=${HC/ghc/ghc-pkg}
-  - unset CC
-  - ROOTDIR=$(pwd)
-  - mkdir -p $HOME/.local/bin
-  - "PATH=/opt/ghc/bin:/opt/ghc-ppa-tools/bin:$HOME/local/bin:$PATH"
-  - HCNUMVER=$(( $(${HC} --numeric-version|sed -E 's/([0-9]+)\.([0-9]+)\.([0-9]+).*/\1 * 10000 + \2 * 100 + \3/') ))
-  - echo $HCNUMVER
-
-install:
-  - cabal --version
-  - echo "$(${HC} --version) [$(${HC} --print-project-git-commit-id 2> /dev/null || echo '?')]"
-  - BENCH=${BENCH---enable-benchmarks}
-  - TEST=${TEST---enable-tests}
-  - HADDOCK=${HADDOCK-true}
-  - UNCONSTRAINED=${UNCONSTRAINED-true}
-  - NOINSTALLEDCONSTRAINTS=${NOINSTALLEDCONSTRAINTS-false}
-  - GHCHEAD=${GHCHEAD-false}
-  - 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 's/-- allow-newer: .*/allow-newer: *:base/' ${HOME}/.cabal/config
-      for pkg in $($HCPKG list --simple-output); do pkg=$(echo $pkg | sed 's/-[^-]*$//'); sed -i "s/allow-newer: /allow-newer: *:$pkg, /" ${HOME}/.cabal/config; done
-
-      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
-
-      grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
-
-      cabal new-update head.hackage -v
-    fi
-  - grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
-  - "printf 'packages: \".\"\\n' > cabal.project"
-  - touch cabal.project.local
-  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
-  - cat cabal.project || true
-  - cat cabal.project.local || true
-  - if [ -f "./configure.ac" ]; then
-      (cd "." && autoreconf -i);
-    fi
-  - rm -f cabal.project.freeze
-  - cabal new-build -w ${HC} ${TEST} ${BENCH} --project-file="cabal.project" --dep -j2 all
-  - rm -rf .ghc.environment.* "."/dist
-  - DISTDIR=$(mktemp -d /tmp/dist-test.XXXX)
-
-# 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:
-  # test that source-distributions can be generated
-  - (cd "." && cabal sdist)
-  - mv "."/dist/distributive-*.tar.gz ${DISTDIR}/
-  - cd ${DISTDIR} || false
-  - find . -maxdepth 1 -name '*.tar.gz' -exec tar -xvf '{}' \;
-  - "printf 'packages: distributive-*/*.cabal\\n' > cabal.project"
-  - touch cabal.project.local
-  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
-  - cat cabal.project || true
-  - cat cabal.project.local || true
-
-  # build & run tests, build benchmarks
-  - cabal new-build -w ${HC} ${TEST} ${BENCH} all
-  - if [ "x$TEST" = "x--enable-tests" ]; then cabal new-test -w ${HC} ${TEST} ${BENCH} all; fi
-
-  # cabal check
-  - (cd distributive-* && cabal check)
-
-  # haddock
-  - rm -rf ./dist-newstyle
-  - if $HADDOCK; then cabal new-haddock -w ${HC} ${TEST} ${BENCH} all; else echo "Skipping haddock generation";fi
-
-# REGENDATA ["-o",".travis.yml","--ghc-head","--irc-channel=irc.freenode.org#haskell-lens","--no-no-tests-no-bench","--no-unconstrained","cabal.project"]
-# EOF
diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,23 @@
+0.6.3 [2026.01.10]
+------------------
+* Drop support for pre-8.0 versions of GHC.
+* Drop unnecessary `base-orphans` dependency.
+
+0.6.2.1 [2020.12.30]
+--------------------
+* The build-type has been changed from `Custom` to `Simple`.
+  To achieve this, the `doctests` test suite has been removed in favor of using
+  [`cabal-docspec`](https://github.com/phadej/cabal-extras/tree/master/cabal-docspec)
+  to run the doctests.
+
+0.6.2 [2020.04.10]
+------------------
+* Make the `Distributive` instance for `Tagged` poly-kinded.
+
+0.6.1 [2019.09.06]
+------------------
+* Add a `Distributive` instance for `WrappedMonad m`.
+
 0.6 [2018.07.02]
 ----------------
 * Remove `fmapCollect`. (See
diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -1,7 +1,8 @@
 distributive
 ============
 
-[![Hackage](https://img.shields.io/hackage/v/distributive.svg)](https://hackage.haskell.org/package/distributive) [![Build Status](https://secure.travis-ci.org/ekmett/distributive.png?branch=master)](http://travis-ci.org/ekmett/distributive)
+
+[![Hackage](https://img.shields.io/hackage/v/distributive.svg)](https://hackage.haskell.org/package/distributive) [![Build Status](https://github.com/ekmett/distributive/workflows/Haskell-CI/badge.svg)](https://github.com/ekmett/distributive/actions?query=workflow%3AHaskell-CI)
 
 This package provides the notion that is categorically dual to `Traversable`.
 
diff --git a/Setup.lhs b/Setup.lhs
--- a/Setup.lhs
+++ b/Setup.lhs
@@ -1,34 +1,5 @@
 \begin{code}
-{-# LANGUAGE CPP #-}
-{-# OPTIONS_GHC -Wall #-}
-module Main (main) where
-
-#ifndef MIN_VERSION_cabal_doctest
-#define MIN_VERSION_cabal_doctest(x,y,z) 0
-#endif
-
-#if MIN_VERSION_cabal_doctest(1,0,0)
-
-import Distribution.Extra.Doctest ( defaultMainWithDoctests )
-main :: IO ()
-main = defaultMainWithDoctests "doctests"
-
-#else
-
-#ifdef MIN_VERSION_Cabal
--- If the macro is defined, we have new cabal-install,
--- but for some reason we don't have cabal-doctest in package-db
---
--- Probably we are running cabal sdist, when otherwise using new-build
--- workflow
-import Warning ()
-#endif
-
-import Distribution.Simple
-
+import Distribution.Simple (defaultMain)
 main :: IO ()
 main = defaultMain
-
-#endif
-
 \end{code}
diff --git a/Warning.hs b/Warning.hs
deleted file mode 100644
--- a/Warning.hs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Warning
-  {-# WARNING ["You are configuring this package without cabal-doctest installed.",
-               "The doctests test-suite will not work as a result.",
-               "To fix this, install cabal-doctest before configuring."] #-}
-  () where
diff --git a/distributive.cabal b/distributive.cabal
--- a/distributive.cabal
+++ b/distributive.cabal
@@ -1,8 +1,8 @@
 name:          distributive
 category:      Data Structures
-version:       0.6
+version:       0.6.3
 license:       BSD3
-cabal-version: >= 1.8
+cabal-version: >= 1.10
 license-file:  LICENSE
 author:        Edward A. Kmett
 maintainer:    Edward A. Kmett <ekmett@gmail.com>
@@ -12,43 +12,31 @@
 copyright:     Copyright (C) 2011-2016 Edward A. Kmett
 synopsis:      Distributive functors -- Dual to Traversable
 description:   Distributive functors -- Dual to @Traversable@
-build-type:    Custom
-tested-with:   GHC == 7.0.4
-             , GHC == 7.2.2
-             , GHC == 7.4.2
-             , GHC == 7.6.3
-             , GHC == 7.8.4
-             , GHC == 7.10.3
-             , GHC == 8.0.2
+build-type:    Simple
+tested-with:   GHC == 8.0.2
              , GHC == 8.2.2
-             , GHC == 8.4.3
-             , GHC == 8.6.1
+             , GHC == 8.4.4
+             , GHC == 8.6.5
+             , GHC == 8.8.4
+             , GHC == 8.10.4
+             , GHC == 9.0.2
+             , GHC == 9.2.8
+             , GHC == 9.4.8
+             , GHC == 9.6.7
+             , GHC == 9.8.4
+             , GHC == 9.10.3
+             , GHC == 9.12.2
+             , GHC == 9.14.1
 extra-source-files:
-  .travis.yml
+  .hlint.yaml
   .vim.custom
   config
-  travis-cabal-apt-install
   CHANGELOG.markdown
   README.markdown
-  Warning.hs
 
 source-repository head
   type: git
-  location: git://github.com/ekmett/distributive.git
-
-custom-setup
-  setup-depends:
-    base >= 4 && <5,
-    Cabal,
-    cabal-doctest >= 1 && <1.1
-
-flag semigroups
-  manual: True
-  default: True
-  description:
-    You can disable the use of the `semigroups` package using `-f-semigroups`.
-    .
-    Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
+  location: https://github.com/ekmett/distributive.git
 
 flag tagged
   manual: True
@@ -60,47 +48,26 @@
 
 library
   build-depends:
-    base                >= 4   && < 5,
-    base-orphans        >= 0.5.2 && < 1,
-    transformers        >= 0.2 && < 0.6
-
-  if !impl(ghc >= 7.8) && !impl(ghcjs)
-    build-depends: transformers-compat >= 0.3 && < 1
+    base                >= 4.9 && < 5,
+    transformers        >= 0.3 && < 0.7
 
   hs-source-dirs:  src
   exposed-modules:
     Data.Distributive
-
-  if impl(ghc>=7.2)
-    exposed-modules: Data.Distributive.Generic
+    Data.Distributive.Generic
 
   if flag(tagged)
     build-depends: tagged >= 0.7 && < 1
 
-  if impl(ghc>=7.2 && < 7.6)
-    build-depends: ghc-prim
-
-  if impl(ghc < 8.0)
-    if flag(semigroups)
-      build-depends: semigroups >= 0.13 && < 1
-
-  if impl(ghc < 7.8)
-    hs-source-dirs: src-compat
-    other-modules: Data.Coerce
-
   ghc-options: -Wall
 
--- Verify the results of the examples
-test-suite doctests
-  type:    exitcode-stdio-1.0
-  main-is: doctests.hs
-  build-depends:
-    base      >= 4,
-    distributive,
-    doctest   >= 0.11.1 && <0.17
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
+  if impl(ghc >= 9.0)
+    -- these flags may abort compilation with GHC-8.10
+    -- https://gitlab.haskell.org/ghc/ghc/-/merge_requests/3295
+    ghc-options: -Winferred-safe-imports -Wmissing-safe-haskell-mode
 
+  default-language: Haskell2010
+
 test-suite spec
   type:           exitcode-stdio-1.0
   hs-source-dirs: tests
@@ -117,3 +84,4 @@
   other-modules: GenericsSpec
 
   ghc-options: -Wall -threaded -rtsopts
+  default-language: Haskell2010
diff --git a/src-compat/Data/Coerce.hs b/src-compat/Data/Coerce.hs
deleted file mode 100644
--- a/src-compat/Data/Coerce.hs
+++ /dev/null
@@ -1,8 +0,0 @@
--- This is a shim for GHC before 7.8. Cabal ignores it
--- for GHC 7.8 and later.
-module Data.Coerce (coerce) where
-
-import Unsafe.Coerce (unsafeCoerce)
-
-coerce :: a -> b
-coerce = unsafeCoerce
diff --git a/src/Data/Distributive.hs b/src/Data/Distributive.hs
--- a/src/Data/Distributive.hs
+++ b/src/Data/Distributive.hs
@@ -2,9 +2,8 @@
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE TypeOperators #-}
 {-# LANGUAGE ScopedTypeVariables #-}
-#if __GLASGOW_HASKELL__ >= 702
 {-# LANGUAGE Trustworthy #-}
-#endif
+{-# LANGUAGE PolyKinds #-}
 
 -----------------------------------------------------------------------------
 -- |
@@ -26,34 +25,22 @@
 import Control.Applicative
 import Control.Applicative.Backwards
 import Control.Monad (liftM)
-#if __GLASGOW_HASKELL__ < 707
-import Control.Monad.Instances ()
-#endif
 import Control.Monad.Trans.Identity
 import Control.Monad.Trans.Reader
 import Data.Coerce
+import Data.Complex
 import Data.Functor.Compose
 import Data.Functor.Identity
 import Data.Functor.Product
 import Data.Functor.Reverse
 import qualified Data.Monoid as Monoid
-import Data.Orphans ()
-
-#if MIN_VERSION_base(4,4,0)
-import Data.Complex
-#endif
-#if __GLASGOW_HASKELL__ >= 707 || defined(MIN_VERSION_tagged)
 import Data.Proxy
-#endif
-#if __GLASGOW_HASKELL__ >= 800 || defined(MIN_VERSION_semigroups)
 import qualified Data.Semigroup as Semigroup
-#endif
+import GHC.Generics (U1(..), (:*:)(..), (:.:)(..), Par1(..), Rec1(..), M1(..))
+
 #ifdef MIN_VERSION_tagged
 import Data.Tagged
 #endif
-#if __GLASGOW_HASKELL__ >= 702
-import GHC.Generics (U1(..), (:*:)(..), (:.:)(..), Par1(..), Rec1(..), M1(..))
-#endif
 
 #ifdef HLINT
 {-# ANN module "hlint: ignore Use section" #-}
@@ -66,7 +53,7 @@
 -- some Coapplicative class. Categorically every 'Distributive'
 -- functor is actually a right adjoint, and so it must be 'Representable'
 -- endofunctor and preserve all limits. This is a fancy way of saying it
--- isomorphic to @(->) x@ for some x.
+-- is isomorphic to @(->) x@ for some x.
 --
 -- To be distributable a container will need to have a way to consistently
 -- zip a potentially infinite number of copies of itself. This effectively
@@ -75,9 +62,7 @@
 -- and no extra information to try to merge together.
 --
 class Functor g => Distributive g where
-#if __GLASGOW_HASKELL__ >= 707
   {-# MINIMAL distribute | collect #-}
-#endif
   -- | The dual of 'Data.Traversable.sequenceA'
   --
   -- >>> distribute [(+1),(+2)] 1
@@ -136,11 +121,9 @@
     :: forall a b f . Functor f => (a -> Identity b) -> f a -> Identity (f b)
   distribute = Identity . fmap runIdentity
 
-#if __GLASGOW_HASKELL__ >= 707 || defined(MIN_VERSION_tagged)
 instance Distributive Proxy where
   collect _ _ = Proxy
   distribute _ = Proxy
-#endif
 
 #if defined(MIN_VERSION_tagged)
 instance Distributive (Tagged t) where
@@ -150,7 +133,7 @@
 #endif
 
 instance Distributive ((->)e) where
-  distribute a e = fmap ($e) a
+  distribute a e = fmap ($ e) a
   collect f q e = fmap (flip f e) q
 
 instance Distributive g => Distributive (ReaderT e g) where
@@ -205,7 +188,6 @@
     => (a -> Monoid.Sum b) -> f a -> Monoid.Sum (f b)
   distribute = Monoid.Sum . fmap Monoid.getSum
 
-#if __GLASGOW_HASKELL__ >= 800 || defined(MIN_VERSION_semigroups)
 instance Distributive Semigroup.Min where
   collect = coerce (fmap :: (a -> b) -> f a -> f b)
     :: forall f a b . Functor f
@@ -229,18 +211,17 @@
     :: forall f a b . Functor f
     => (a -> Semigroup.Last b) -> f a -> Semigroup.Last (f b)
   distribute = Semigroup.Last . fmap Semigroup.getLast
-#endif
 
-#if MIN_VERSION_base(4,4,0)
 instance Distributive Complex where
   distribute wc = fmap realP wc :+ fmap imagP wc where
     -- Redefine realPart and imagPart to avoid incurring redundant RealFloat
     -- constraints on older versions of base
     realP (r :+ _) = r
     imagP (_ :+ i) = i
-#endif
 
-#if __GLASGOW_HASKELL__ >= 702
+instance (Distributive m, Monad m) => Distributive (WrappedMonad m) where
+  collect f = WrapMonad . collect (coerce f)
+
 instance Distributive U1 where
   distribute _ = U1
 
@@ -273,4 +254,3 @@
   collect = coerce (collect :: (a -> f b) -> g a -> f (g b))
     :: forall g a b . Functor g
     => (a -> M1 i c f b) -> g a -> M1 i c f (g b)
-#endif
diff --git a/src/Data/Distributive/Generic.hs b/src/Data/Distributive/Generic.hs
--- a/src/Data/Distributive/Generic.hs
+++ b/src/Data/Distributive/Generic.hs
@@ -1,10 +1,7 @@
-{-# LANGUAGE CPP #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TypeOperators #-}
 {-# LANGUAGE FlexibleContexts #-}
-#if __GLASGOW_HASKELL__ >= 702
 {-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Data.Distributive
diff --git a/tests/doctests.hs b/tests/doctests.hs
deleted file mode 100644
--- a/tests/doctests.hs
+++ /dev/null
@@ -1,25 +0,0 @@
------------------------------------------------------------------------------
--- |
--- Module      :  Main (doctests)
--- Copyright   :  (C) 2012-14 Edward Kmett
--- License     :  BSD-style (see the file LICENSE)
--- Maintainer  :  Edward Kmett <ekmett@gmail.com>
--- Stability   :  provisional
--- Portability :  portable
---
--- This module provides doctests for a project based on the actual versions
--- of the packages it was built with. It requires a corresponding Setup.lhs
--- to be added to the project
------------------------------------------------------------------------------
-module Main where
-
-import Build_doctests (flags, pkgs, module_sources)
-import Data.Foldable (traverse_)
-import Test.DocTest
-
-main :: IO ()
-main = do
-    traverse_ putStrLn args
-    doctest args
-  where
-    args = flags ++ pkgs ++ module_sources
diff --git a/travis-cabal-apt-install b/travis-cabal-apt-install
deleted file mode 100644
--- a/travis-cabal-apt-install
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/sh
-set -eu
-
-sudo apt-get -q update
-sudo apt-get -q -y install dctrl-tools
-
-# Try installing some of the build-deps with apt-get for speed.
-eval "$(
-  printf '%s' "grep-aptavail -n -sPackage '(' -FFALSE -X FALSE ')'"
-  2>/dev/null cabal install "$@" --dry-run -v | \
-  sed -nre "s/^([^ ]+)-[0-9.]+ \(.*$/ -o '(' -FPackage -X libghc-\1-dev ')'/p" | \
-  xargs -d'\n'
-)" | sort -u | xargs -d'\n' sudo apt-get -q -y install -- libghc-quickcheck2-dev
-
-# Install whatever is still needed with cabal.
-cabal install "$@"