Hello community,

here is the log from the commit of package ghc-free for openSUSE:Factory 
checked in at 2019-05-12 11:35:19
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Comparing /work/SRC/openSUSE:Factory/ghc-free (Old)
 and      /work/SRC/openSUSE:Factory/.ghc-free.new.5148 (New)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Package is "ghc-free"

Sun May 12 11:35:19 2019 rev:9 rq:701766 version:5.1.1

Changes:
--------
--- /work/SRC/openSUSE:Factory/ghc-free/ghc-free.changes        2018-10-25 
08:25:43.403819215 +0200
+++ /work/SRC/openSUSE:Factory/.ghc-free.new.5148/ghc-free.changes      
2019-05-12 11:35:25.226225027 +0200
@@ -1,0 +2,8 @@
+Fri May  3 02:02:58 UTC 2019 - [email protected]
+
+- Update free to version 5.1.1.
+  5.1.1 [2019.05.02]
+  ------------------
+  * Allow building with `base-4.13` (GHC 8.8).
+
+-------------------------------------------------------------------

Old:
----
  free-5.1.tar.gz

New:
----
  free-5.1.1.tar.gz

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Other differences:
------------------
++++++ ghc-free.spec ++++++
--- /var/tmp/diff_new_pack.BAgzym/_old  2019-05-12 11:35:25.802226714 +0200
+++ /var/tmp/diff_new_pack.BAgzym/_new  2019-05-12 11:35:25.802226714 +0200
@@ -1,7 +1,7 @@
 #
 # spec file for package ghc-free
 #
-# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -18,7 +18,7 @@
 
 %global pkg_name free
 Name:           ghc-%{pkg_name}
-Version:        5.1
+Version:        5.1.1
 Release:        0
 Summary:        Monads for free
 License:        BSD-3-Clause

++++++ free-5.1.tar.gz -> free-5.1.1.tar.gz ++++++
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/.travis.yml new/free-5.1.1/.travis.yml
--- old/free-5.1/.travis.yml    2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.1/.travis.yml  2001-09-09 03:46:40.000000000 +0200
@@ -1,159 +1,180 @@
 # 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'
+#   haskell-ci '--output=.travis.yml' '--config=cabal.haskell-ci' 
'cabal.project'
 #
-# For more information, see https://github.com/hvr/multi-ghc-travis
+# For more information, see https://github.com/haskell-CI/haskell-ci
+#
+# version: 0.3.20190425
 #
 language: c
-sudo: false
-
+dist: xenial
 git:
-  submodules: false  # whether to recursively clone submodules
-
+  # whether to recursively clone submodules
+  submodules: false
 notifications:
   irc:
     channels:
-      - "irc.freenode.org#haskell-lens"
+      - irc.freenode.org#haskell-lens
     skip_join: true
     template:
-      - "\x0313free\x03/\x0306%{branch}\x03 \x0314%{commit}\x03 %{build_url} 
%{message}"
-
+      - "\"\\x0313free\\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
+  - rm -fv $CABALHOME/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
-
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/00-index.*
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/*.json
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.cache
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar.idx
+  - rm -rfv $CABALHOME/packages/head.hackage
 matrix:
   include:
-    - compiler: "ghc-8.6.1"
+    - compiler: ghc-8.8.1
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.8.1","cabal-install-3.0"]}}
       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-head"
+    - compiler: ghc-8.6.5
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.6.5","cabal-install-2.4"]}}
+    - compiler: ghc-8.4.4
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.4.4","cabal-install-2.4"]}}
+    - compiler: ghc-8.2.2
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.2.2","cabal-install-2.4"]}}
+    - compiler: ghc-8.0.2
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.0.2","cabal-install-2.4"]}}
+    - compiler: ghc-7.10.3
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.10.3","cabal-install-2.4"]}}
+    - compiler: ghc-7.8.4
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.8.4","cabal-install-2.4"]}}
+    - compiler: ghc-7.6.3
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.6.3","cabal-install-2.4"]}}
+    - compiler: ghc-7.4.2
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.4.2","cabal-install-2.4"]}}
+    - compiler: ghc-head
+      addons: 
{"apt":{"sources":["hvr-ghc"],"packages":["ghc-head","cabal-install-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-8.6.1"
-
+    - compiler: ghc-head
+    - compiler: ghc-8.8.1
 before_install:
-  - HC=${CC}
-  - HCPKG=${HC/ghc/ghc-pkg}
+  - HC=$(echo "/opt/$CC/bin/ghc" | sed 's/-/\//')
+  - HCPKG="$HC-pkg"
   - unset CC
-  - ROOTDIR=$(pwd)
-  - mkdir -p $HOME/.local/bin
-  - "PATH=/opt/ghc/bin:/opt/ghc-ppa-tools/bin:$HOME/local/bin:$PATH"
+  - CABAL=/opt/ghc/bin/cabal
+  - CABALHOME=$HOME/.cabal
+  - export PATH="$CABALHOME/bin:$PATH"
+  - TOP=$(pwd)
   - HCNUMVER=$(( $(${HC} --numeric-version|sed -E 
's/([0-9]+)\.([0-9]+)\.([0-9]+).*/\1 * 10000 + \2 * 100 + \3/') ))
   - echo $HCNUMVER
-
+  - CABAL="$CABAL -vnormal+nowrap+markoutput"
+  - set -o pipefail
+  - |
+    echo 'function blue(s) { printf "\033[0;34m" s "\033[0m " }'           >> 
.colorful.awk
+    echo 'BEGIN { state = "output"; }'                                     >> 
.colorful.awk
+    echo '/^-----BEGIN CABAL OUTPUT-----$/ { state = "cabal" }'            >> 
.colorful.awk
+    echo '/^-----END CABAL OUTPUT-----$/ { state = "output" }'             >> 
.colorful.awk
+    echo '!/^(-----BEGIN CABAL OUTPUT-----|-----END CABAL OUTPUT-----)/ {' >> 
.colorful.awk
+    echo '  if (state == "cabal") {'                                       >> 
.colorful.awk
+    echo '    print blue($0)'                                              >> 
.colorful.awk
+    echo '  } else {'                                                      >> 
.colorful.awk
+    echo '    print $0'                                                    >> 
.colorful.awk
+    echo '  }'                                                             >> 
.colorful.awk
+    echo '}'                                                               >> 
.colorful.awk
+  - cat .colorful.awk
+  - |
+    color_cabal_output () {
+      awk -f $TOP/.colorful.awk
+    }
+  - echo text | color_cabal_output
 install:
-  - cabal --version
+  - ${CABAL} --version
   - echo "$(${HC} --version) [$(${HC} --print-project-git-commit-id 2> 
/dev/null || echo '?')]"
-  - BENCH=${BENCH---enable-benchmarks}
-  - TEST=${TEST---enable-tests}
-  - HADDOCK=${HADDOCK-true}
-  - UNCONSTRAINED=${UNCONSTRAINED-true}
-  - NOINSTALLEDCONSTRAINTS=${NOINSTALLEDCONSTRAINTS-false}
+  - TEST=--enable-tests
+  - BENCH=--enable-benchmarks
   - 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
+  - rm -f $CABALHOME/config
+  - |
+    echo "verbose: normal +nowrap +markoutput"          >> $CABALHOME/config
+    echo "remote-build-reporting: anonymous"            >> $CABALHOME/config
+    echo "remote-repo-cache: $CABALHOME/packages"       >> $CABALHOME/config
+    echo "logs-dir:          $CABALHOME/logs"           >> $CABALHOME/config
+    echo "world-file:        $CABALHOME/world"          >> $CABALHOME/config
+    echo "extra-prog-path:   $CABALHOME/bin"            >> $CABALHOME/config
+    echo "symlink-bindir:    $CABALHOME/bin"            >> $CABALHOME/config
+    echo "installdir:        $CABALHOME/bin"            >> $CABALHOME/config
+    echo "build-summary:     $CABALHOME/logs/build.log" >> $CABALHOME/config
+    echo "store-dir:         $CABALHOME/store"          >> $CABALHOME/config
+    echo "install-dirs user"                            >> $CABALHOME/config
+    echo "  prefix: $CABALHOME"                         >> $CABALHOME/config
+    echo "repository hackage.haskell.org"               >> $CABALHOME/config
+    echo "  url: http://hackage.haskell.org/";           >> $CABALHOME/config
   - |
     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
+    echo "allow-newer: $($HCPKG list --simple-output | sed -E 
's/([a-zA-Z-]+)-[0-9.]+/*:\1/g')" >> $CABALHOME/config
+    
+    echo "repository head.hackage"                                             
           >> $CABALHOME/config
+    echo "   url: http://head.hackage.haskell.org/";                            
           >> $CABALHOME/config
+    echo "   secure: True"                                                     
           >> $CABALHOME/config
+    echo "   root-keys: 
07c59cb65787dedfaef5bd5f987ceb5f7e5ebf88b904bbd4c5cbdeb2ff71b740" >> 
$CABALHOME/config
+    echo "              
2e8555dde16ebd8df076f1a8ef13b8f14c66bad8eafefd7d9e37d0ed711821fb" >> 
$CABALHOME/config
+    echo "              
8f79fd2389ab2967354407ec852cbe73f2e8635793ac446d09461ffb99527f6e" >> 
$CABALHOME/config
+    echo "   key-threshold: 3"                                                 
           >> $CABALHOME/config
     fi
-  - grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
-  - "printf 'packages: \".\" \"./examples\"\\n' > cabal.project"
-  - echo 'package free-examples' >> cabal.project
-  - "echo '  flags: -mandelbrot-iter' >> 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 $CABALHOME/config
+  - rm -fv cabal.project cabal.project.local cabal.project.freeze
+  - travis_retry ${CABAL} v2-update -v
+  # Generate cabal.project
+  - rm -rf cabal.project cabal.project.local cabal.project.freeze
+  - touch cabal.project
+  - |
+    echo 'packages: "."' >> cabal.project
+    echo 'packages: "./examples"' >> cabal.project
+  - |
+    echo "package free-examples"               >> cabal.project
+    echo "  flags: -mandelbrot-iter"           >> cabal.project
+    echo ""                                    >> cabal.project
+    echo "write-ghc-environment-files: always" >> cabal.project
+  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 
's/-[^-]*$//' | grep -vE -- '^(free|free-examples)$' | sed 's/^/constraints: /' 
| sed 's/$/ installed/' >> cabal.project.local; done"
   - cat cabal.project || true
   - cat cabal.project.local || true
-  - if [ -f "./configure.ac" ]; then
-      (cd "." && autoreconf -i);
-    fi
-  - if [ -f "./examples/configure.ac" ]; then
-      (cd "./examples" && autoreconf -i);
-    fi
-  - rm -f cabal.project.freeze
-  - cabal new-build -w ${HC} ${TEST} ${BENCH} --project-file="cabal.project" 
--dep -j2 all
-  - rm -rf .ghc.environment.* "."/dist "./examples"/dist
-  - DISTDIR=$(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.
+  - if [ -f "./configure.ac" ]; then (cd "." && autoreconf -i); fi
+  - if [ -f "./examples/configure.ac" ]; then (cd "./examples" && autoreconf 
-i); fi
+  - ${CABAL} v2-freeze -w ${HC} ${TEST} ${BENCH} | color_cabal_output
+  - "cat cabal.project.freeze | sed -E 's/^(constraints: *| *)//' | sed 
's/any.//'"
+  - rm  cabal.project.freeze
+  - ${CABAL} v2-build -w ${HC} ${TEST} ${BENCH} --dep -j2 all | 
color_cabal_output
 script:
-  # test that source-distributions can be generated
-  - (cd "." && cabal sdist)
-  - (cd "./examples" && cabal sdist)
-  - mv "."/dist/free-*.tar.gz "./examples"/dist/free-examples-*.tar.gz 
${DISTDIR}/
+  - DISTDIR=$(mktemp -d /tmp/dist-test.XXXX)
+  # Packaging...
+  - ${CABAL} v2-sdist all | color_cabal_output
+  # Unpacking...
+  - mv dist-newstyle/sdist/*.tar.gz ${DISTDIR}/
   - cd ${DISTDIR} || false
   - find . -maxdepth 1 -name '*.tar.gz' -exec tar -xvf '{}' \;
-  - "printf 'packages: free-*/*.cabal free-examples-*/*.cabal\\n' > 
cabal.project"
-  - echo 'package free-examples' >> cabal.project
-  - "echo '  flags: -mandelbrot-iter' >> 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"
+  # Generate cabal.project
+  - rm -rf cabal.project cabal.project.local cabal.project.freeze
+  - touch cabal.project
+  - |
+    echo 'packages: "free-*/*.cabal"' >> cabal.project
+    echo 'packages: "free-examples-*/*.cabal"' >> cabal.project
+  - |
+    echo "package free-examples"               >> cabal.project
+    echo "  flags: -mandelbrot-iter"           >> cabal.project
+    echo ""                                    >> cabal.project
+    echo "write-ghc-environment-files: always" >> cabal.project
+  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 
's/-[^-]*$//' | grep -vE -- '^(free|free-examples)$' | sed 's/^/constraints: /' 
| sed 's/$/ installed/' >> cabal.project.local; done"
   - cat cabal.project || true
   - cat cabal.project.local || true
-
+  # Building with tests and benchmarks...
   # build & run tests, build benchmarks
-  - cabal new-build -w ${HC} ${TEST} ${BENCH} all
-
-  # cabal check
-  - (cd free-* && cabal check)
-  - (cd free-examples-* && cabal check)
-
-  # haddock
-  - rm -rf ./dist-newstyle
-  - if $HADDOCK; then cabal new-haddock -w ${HC} ${TEST} ${BENCH} all; else 
echo "Skipping haddock generation";fi
+  - ${CABAL} v2-build -w ${HC} ${TEST} ${BENCH} all | color_cabal_output
+  # cabal check...
+  - (cd free-* && ${CABAL} -vnormal check)
+  - (cd free-examples-* && ${CABAL} -vnormal check)
+  # haddock...
+  - ${CABAL} v2-haddock -w ${HC} ${TEST} ${BENCH} all | color_cabal_output
 
-# REGENDATA 
["-o",".travis.yml","--ghc-head","--irc-channel=irc.freenode.org#haskell-lens","--no-no-tests-no-bench","--no-unconstrained","cabal.project"]
+# REGENDATA 
["--output=.travis.yml","--config=cabal.haskell-ci","cabal.project"]
 # EOF
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/CHANGELOG.markdown 
new/free-5.1.1/CHANGELOG.markdown
--- old/free-5.1/CHANGELOG.markdown     2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.1/CHANGELOG.markdown   2001-09-09 03:46:40.000000000 +0200
@@ -1,3 +1,7 @@
+5.1.1 [2019.05.02]
+------------------
+* Allow building with `base-4.13` (GHC 8.8).
+
 5.1 [2018.07.03]
 ----------------
 * Generalize the type of `_Free`.
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/examples/PerfTH.hs 
new/free-5.1.1/examples/PerfTH.hs
--- old/free-5.1/examples/PerfTH.hs     2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.1/examples/PerfTH.hs   2001-09-09 03:46:40.000000000 +0200
@@ -12,6 +12,7 @@
 import Data.Word
 import Control.Monad
 import Control.Monad.State.Strict
+import Control.Monad.Fail (MonadFail)
 import Control.Monad.Free
 import Control.Monad.Free.TH
 import qualified Control.Monad.Free.Church as Church
@@ -65,7 +66,7 @@
     return a
 
 -- | Church-based interpreter
-runPerfF :: (MonadIO m) => [String] -> Church.F PerfF () -> m ()
+runPerfF :: (MonadFail m, MonadIO m) => [String] -> Church.F PerfF () -> m ()
 runPerfF [] _ = return ()
 runPerfF ss0 f =
   fst `liftM` do
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/examples/RetryTH.hs 
new/free-5.1.1/examples/RetryTH.hs
--- old/free-5.1/examples/RetryTH.hs    2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.1/examples/RetryTH.hs  2001-09-09 03:46:40.000000000 +0200
@@ -5,9 +5,11 @@
 module Main where
 
 import Control.Monad
+import Control.Monad.Fail as Fail
 import Control.Monad.Free
 import Control.Monad.Free.TH
 import Control.Monad.IO.Class
+import Control.Monad.Trans.Instances ()
 import Control.Monad.Trans.Maybe
 import qualified Data.Foldable as F
 import Text.Read.Compat (readMaybe)
@@ -53,10 +55,10 @@
 -- retry      :: MonadFree RetryF m => m a
 
 -- | We can run a retriable program in any MonadIO.
-runRetry :: MonadIO m => Retry a -> m a
+runRetry :: (MonadFail m, MonadIO m) => Retry a -> m a
 runRetry = iterM run
   where
-    run :: MonadIO m => RetryF (m a) -> m a
+    run :: (MonadFail m, MonadIO m) => RetryF (m a) -> m a
 
     run (Output s next) = do
       liftIO $ putStrLn s
@@ -66,7 +68,7 @@
       s <- liftIO getLine
       case readMaybe s of
         Just x  -> next x
-        Nothing -> fail "invalid input"
+        Nothing -> Fail.fail "invalid input"
 
     run (WithRetry block next) = do
       -- Here we use
@@ -76,7 +78,7 @@
       Just x <- runMaybeT . F.msum $ repeat (runRetry block)
       next x
 
-    run Retry = fail "forced retry"
+    run Retry = Fail.fail "forced retry"
 
 -- | Sample program.
 test :: Retry ()
@@ -92,4 +94,3 @@
 
 main :: IO ()
 main = runRetry test
-
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/examples/free-examples.cabal 
new/free-5.1.1/examples/free-examples.cabal
--- old/free-5.1/examples/free-examples.cabal   2018-07-03 13:58:21.000000000 
+0200
+++ new/free-5.1.1/examples/free-examples.cabal 2001-09-09 03:46:40.000000000 
+0200
@@ -16,8 +16,9 @@
              , GHC == 7.10.3
              , 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 == 8.8.1
 synopsis:      Monads for free
 description:   Examples projects using @free@
 build-type:    Simple
@@ -41,6 +42,9 @@
     mtl          >= 2.0.1 && < 2.3,
     transformers >= 0.2   && < 0.6
 
+-- This example depends on the HGL library which, unfortunately, fails to
+-- compile on GHC 8.4 or later. (See https://github.com/xpika/hgl/issues/3.)
+-- Build at your own risk.
 executable free-mandelbrot-iter
   if !flag(mandelbrot-iter)
     buildable: False
@@ -73,6 +77,7 @@
   build-depends:
     base         == 4.*,
     base-compat,
+    fail         == 4.9.*,
     free,
     mtl          >= 2.0.1 && < 2.3,
     rdtsc,
@@ -82,12 +87,14 @@
   hs-source-dirs: .
   default-language: Haskell2010
   main-is: RetryTH.hs
-  ghc-options: -Wall
+  ghc-options: -Wall -fno-warn-orphans
   build-depends:
-    base         == 4.*,
+    base                == 4.*,
     base-compat,
+    fail                == 4.9.*,
     free,
-    transformers >= 0.2 && < 0.6
+    transformers        >= 0.2   && < 0.6,
+    transformers-compat >= 0.6.4 && < 0.7
 
 executable free-teletype
   hs-source-dirs: .
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/free.cabal new/free-5.1.1/free.cabal
--- old/free-5.1/free.cabal     2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.1/free.cabal   2001-09-09 03:46:40.000000000 +0200
@@ -1,6 +1,6 @@
 name:          free
 category:      Control, Monads
-version:       5.1
+version:       5.1.1
 license:       BSD3
 cabal-version: 1.18
 license-file:  LICENSE
@@ -16,8 +16,9 @@
              , GHC == 7.10.3
              , 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 == 8.8.1
 synopsis:      Monads for free
 description:
   Free monads are useful for many tree-like structures and domain specific 
languages.
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Monad/Free.hs 
new/free-5.1.1/src/Control/Monad/Free.hs
--- old/free-5.1/src/Control/Monad/Free.hs      2018-07-03 13:58:21.000000000 
+0200
+++ new/free-5.1.1/src/Control/Monad/Free.hs    2001-09-09 03:46:40.000000000 
+0200
@@ -82,7 +82,7 @@
 --
 -- then 'Free' is the left adjoint to @U@.
 --
--- Being 'Free' being left adjoint to @U@ means that there is an isomorphism 
between
+-- 'Free' being left adjoint to @U@ means that there is an isomorphism between
 --
 -- @'Free' f -> m@ in the category of monads and @f -> U m@ in the category of 
functors.
 --
@@ -355,7 +355,7 @@
 iterM _   (Pure x) = return x
 iterM phi (Free f) = phi (iterM phi <$> f)
 
--- | Lift a natural transformation from @f@ to @g@ into a natural 
transformation from @'FreeT' f@ to @'FreeT' g@.
+-- | Lift a natural transformation from @f@ to @g@ into a natural 
transformation from @'Free' f@ to @'Free' g@.
 hoistFree :: Functor g => (forall a. f a -> g a) -> Free f b -> Free g b
 hoistFree _ (Pure a)  = Pure a
 hoistFree f (Free as) = Free (hoistFree f <$> f as)
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Monad/Trans/Free/Ap.hs 
new/free-5.1.1/src/Control/Monad/Trans/Free/Ap.hs
--- old/free-5.1/src/Control/Monad/Trans/Free/Ap.hs     2018-07-03 
13:58:21.000000000 +0200
+++ new/free-5.1.1/src/Control/Monad/Trans/Free/Ap.hs   2001-09-09 
03:46:40.000000000 +0200
@@ -307,10 +307,12 @@
   FreeT m >>= f = FreeT $ m >>= \v -> case v of
     Pure a -> runFreeT (f a)
     Free w -> return (Free (fmap (>>= f) w))
-  fail = Fail.fail
-
-instance (Applicative f, Applicative m, Monad m) => Fail.MonadFail (FreeT f m) 
where
+#if !MIN_VERSION_base(4,13,0)
   fail e = FreeT (fail e)
+#endif
+
+instance (Applicative f, Applicative m, Fail.MonadFail m) => Fail.MonadFail 
(FreeT f m) where
+  fail e = FreeT (Fail.fail e)
 
 instance MonadTrans (FreeT f) where
   lift = FreeT . liftM Pure
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Monad/Trans/Free.hs 
new/free-5.1.1/src/Control/Monad/Trans/Free.hs
--- old/free-5.1/src/Control/Monad/Trans/Free.hs        2018-07-03 
13:58:21.000000000 +0200
+++ new/free-5.1.1/src/Control/Monad/Trans/Free.hs      2001-09-09 
03:46:40.000000000 +0200
@@ -308,10 +308,12 @@
     Pure a -> runFreeT (f a)
     Free w -> return (Free (fmap (>>= f) w))
 
-  fail = Fail.fail
-
-instance (Functor f, Monad m) => Fail.MonadFail (FreeT f m) where
+#if !MIN_VERSION_base(4,13,0)
   fail e = FreeT (fail e)
+#endif
+
+instance (Functor f, Fail.MonadFail m) => Fail.MonadFail (FreeT f m) where
+  fail e = FreeT (Fail.fail e)
 
 instance MonadTrans (FreeT f) where
   lift = FreeT . liftM Pure
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Monad/Trans/Iter.hs 
new/free-5.1.1/src/Control/Monad/Trans/Iter.hs
--- old/free-5.1/src/Control/Monad/Trans/Iter.hs        2018-07-03 
13:58:21.000000000 +0200
+++ new/free-5.1.1/src/Control/Monad/Trans/Iter.hs      2001-09-09 
03:46:40.000000000 +0200
@@ -219,8 +219,10 @@
   {-# INLINE return #-}
   IterT m >>= k = IterT $ m >>= either (runIterT . k) (return . Right . (>>= 
k))
   {-# INLINE (>>=) #-}
+#if !MIN_VERSION_base(4,13,0)
   fail = Fail.fail
   {-# INLINE fail #-}
+#endif
 
 instance Monad m => Fail.MonadFail (IterT m) where
   fail _ = never


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