Hello community,

here is the log from the commit of package ghc-free for openSUSE:Leap:15.2 
checked in at 2020-02-19 18:39:03
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Comparing /work/SRC/openSUSE:Leap:15.2/ghc-free (Old)
 and      /work/SRC/openSUSE:Leap:15.2/.ghc-free.new.26092 (New)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Package is "ghc-free"

Wed Feb 19 18:39:03 2020 rev:11 rq:771313 version:5.1.3

Changes:
--------
--- /work/SRC/openSUSE:Leap:15.2/ghc-free/ghc-free.changes      2020-01-15 
15:02:03.377798556 +0100
+++ /work/SRC/openSUSE:Leap:15.2/.ghc-free.new.26092/ghc-free.changes   
2020-02-19 18:39:03.978025351 +0100
@@ -1,0 +2,32 @@
+Wed Nov 27 03:01:05 UTC 2019 - [email protected]
+
+- Update free to version 5.1.3.
+  5.1.3 [2019.11.26]
+  ------------------
+  * Allow building with `template-haskell-2.16` (GHC 8.10).
+  * Add `Eq{1,2}`, `Ord{1,2}`, `Read{1,2}`, and `Show{1,2}` instances for
+    `CofreeF`.
+
+-------------------------------------------------------------------
+Fri Nov  8 16:13:46 UTC 2019 - Peter Simons <[email protected]>
+
+- Drop obsolete group attributes.
+
+-------------------------------------------------------------------
+Wed Aug 28 02:02:43 UTC 2019 - [email protected]
+
+- Update free to version 5.1.2.
+  5.1.2 [2019.08.27]
+  ------------------
+  * Implement more performant versions of `some` and `many` in the 
`Alternative`
+    instance for the final `Alt` encoding.
+
+-------------------------------------------------------------------
+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-5.1.3.tar.gz

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

Other differences:
------------------
++++++ ghc-free.spec ++++++
--- /var/tmp/diff_new_pack.bQCiZs/_old  2020-02-19 18:39:04.234025886 +0100
+++ /var/tmp/diff_new_pack.bQCiZs/_new  2020-02-19 18:39:04.234025886 +0100
@@ -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
@@ -18,11 +18,10 @@
 
 %global pkg_name free
 Name:           ghc-%{pkg_name}
-Version:        5.1
+Version:        5.1.3
 Release:        0
 Summary:        Monads for free
 License:        BSD-3-Clause
-Group:          Development/Libraries/Haskell
 URL:            https://hackage.haskell.org/package/%{pkg_name}
 Source0:        
https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz
 BuildRequires:  ghc-Cabal-devel
@@ -60,7 +59,6 @@
 
 %package devel
 Summary:        Haskell %{pkg_name} library development files
-Group:          Development/Libraries/Haskell
 Requires:       %{name} = %{version}-%{release}
 Requires:       ghc-compiler = %{ghc_version}
 Requires(post): ghc-compiler = %{ghc_version}

++++++ free-5.1.tar.gz -> free-5.1.3.tar.gz ++++++
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/.hlint.yaml new/free-5.1.3/.hlint.yaml
--- old/free-5.1/.hlint.yaml    1970-01-01 01:00:00.000000000 +0100
+++ new/free-5.1.3/.hlint.yaml  2001-09-09 03:46:40.000000000 +0200
@@ -0,0 +1,15 @@
+- arguments: [--cpp-define=HLINT, --cpp-ansi, --cpp-include=include]
+
+- fixity: "infixr 5 :<"
+
+# This affects performance
+- ignore: {name: Redundant lambda}
+
+# This is not valid for improve
+- ignore: {name: Eta reduce}
+
+# DeriveDataTypable noise
+- ignore: {name: Unused LANGUAGE pragma}
+
+# They are clearer in places
+- ignore: {name: Avoid lambda}
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/.travis.yml new/free-5.1.3/.travis.yml
--- old/free-5.1/.travis.yml    2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.3/.travis.yml  2001-09-09 03:46:40.000000000 +0200
@@ -1,159 +1,207 @@
 # 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: 0.9.20191126
+#
+version: ~> 1.0
 language: c
-sudo: false
-
+os: linux
+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
-
+    - $HOME/.hlint
 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
-
-matrix:
+  - 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
+jobs:
   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-head"
-      env: GHCHEAD=true
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-head], 
sources: [hvr-ghc]}}
-
+    - compiler: ghc-8.10.1
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-8.10.1","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-8.8.1
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-8.8.1","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-8.6.5
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-8.6.5","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-8.4.4
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-8.4.4","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-8.2.2
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-8.2.2","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-8.0.2
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-8.0.2","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-7.10.3
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-7.10.3","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-7.8.4
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-7.8.4","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-7.6.3
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-7.6.3","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-7.4.2
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-7.4.2","cabal-install-3.0"]}}
+      os: linux
+    - compiler: ghc-head
+      addons: {"apt":{"sources":[{"sourceline":"deb 
http://ppa.launchpad.net/hvr/ghc/ubuntu xenial 
main","key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286"}],"packages":["ghc-head","cabal-install-head"]}}
+      os: linux
   allow_failures:
-    - compiler: "ghc-head"
-    - compiler: "ghc-8.6.1"
-
+    - compiler: ghc-head
+    - compiler: ghc-8.10.1
 before_install:
-  - HC=${CC}
-  - HCPKG=${HC/ghc/ghc-pkg}
+  - HC=$(echo "/opt/$CC/bin/ghc" | sed 's/-/\//')
+  - WITHCOMPILER="-w $HC"
+  - HADDOCK=$(echo "/opt/$CC/bin/haddock" | sed 's/-/\//')
+  - HCPKG="$HC-pkg"
   - unset CC
-  - ROOTDIR=$(pwd)
-  - mkdir -p $HOME/.local/bin
-  - "PATH=/opt/ghc/bin:/opt/ghc-ppa-tools/bin:$HOME/local/bin:$PATH"
-  - HCNUMVER=$(( $(${HC} --numeric-version|sed -E 
's/([0-9]+)\.([0-9]+)\.([0-9]+).*/\1 * 10000 + \2 * 100 + \3/') ))
+  - CABAL=/opt/ghc/bin/cabal
+  - CABALHOME=$HOME/.cabal
+  - export PATH="$CABALHOME/bin:$PATH"
+  - TOP=$(pwd)
+  - "HCNUMVER=$(${HC} --numeric-version|perl -ne 
'/^(\\d+)\\.(\\d+)\\.(\\d+)(\\.(\\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 
0 ? $5 != 1 : $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}
-  - 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
+  - TEST=--enable-tests
+  - BENCH=--enable-benchmarks
+  - HEADHACKAGE=false
+  - if [ $HCNUMVER -ge 81000 ] ; then HEADHACKAGE=true ; fi
+  - rm -f $CABALHOME/config
+  - |
+    echo "verbose: normal +nowrap +markoutput"                                 
 >> $CABALHOME/config
+    echo "remote-build-reporting: anonymous"                                   
 >> $CABALHOME/config
+    echo "write-ghc-environment-files: always"                                 
 >> $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
+    echo "  secure: True"                                                      
 >> $CABALHOME/config
+    echo "  key-threshold: 3"                                                  
 >> $CABALHOME/config
+    echo "  root-keys:"                                                        
 >> $CABALHOME/config
+    echo "    
fe331502606802feac15e514d9b9ea83fee8b6ffef71335479a2e68d84adc6b0" >> 
$CABALHOME/config
+    echo "    
1ea9ba32c526d1cc91ab5e5bd364ec5e9e8cb67179a471872f6e26f0ae773d42" >> 
$CABALHOME/config
+    echo "    
2c6c3627bd6c982990239487f1abd02e08a02e6cf16edb105a8012d444d870c3" >> 
$CABALHOME/config
+    echo "    
0a5c7ea47cd1b15f01f5f51a33adda7e655bc0f0b0615baa8e271f4c3351e21d" >> 
$CABALHOME/config
+    echo "    
51f0161b906011b52c6613376b1ae937670da69322113a246a09f807c62f6921" >> 
$CABALHOME/config
+  - |
+    if $HEADHACKAGE; then
+    echo "allow-newer: $($HCPKG list --simple-output | sed -E 
's/([a-zA-Z-]+)-[0-9.]+/*:\1/g')" >> $CABALHOME/config
+    echo "repository head.hackage.ghc.haskell.org"                             
           >> $CABALHOME/config
+    echo "   url: https://ghc.gitlab.haskell.org/head.hackage/";                
           >> $CABALHOME/config
+    echo "   secure: True"                                                     
           >> $CABALHOME/config
+    echo "   root-keys: 
7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d" >> 
$CABALHOME/config
+    echo "              
26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329" >> 
$CABALHOME/config
+    echo "              
f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89" >> 
$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"
+  - |
+    echo "program-default-options"                >> $CABALHOME/config
+    echo "  ghc-options: $GHCJOBS +RTS -M6G -RTS" >> $CABALHOME/config
+  - 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
+  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 
's/-[^-]*$//' | (grep -vE -- '^(free|free-examples)$' || true) | sed 
's/^/constraints: /' | sed 's/$/ 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 $WITHCOMPILER ${TEST} ${BENCH} | color_cabal_output
+  - "cat cabal.project.freeze | sed -E 's/^(constraints: *| *)//' | sed 
's/any.//'"
+  - rm  cabal.project.freeze
+  - ${CABAL} v2-build $WITHCOMPILER ${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"
+  - find . -maxdepth 1 -type f -name '*.tar.gz' -exec tar -xvf '{}' \;
+  - find . -maxdepth 1 -type f -name '*.tar.gz' -exec rm       '{}' \;
+  - PKGDIR_free="$(find . -maxdepth 1 -type d -regex '.*/free-[0-9.]*')"
+  - PKGDIR_free_examples="$(find . -maxdepth 1 -type d -regex 
'.*/free-examples-[0-9.]*')"
+  # Generate cabal.project
+  - rm -rf cabal.project cabal.project.local cabal.project.freeze
+  - touch cabal.project
+  - |
+    echo "packages: ${PKGDIR_free}" >> cabal.project
+    echo "packages: ${PKGDIR_free_examples}" >> cabal.project
+  - |
+    echo "package free-examples"     >> cabal.project
+    echo "  flags: -mandelbrot-iter" >> cabal.project
+  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 
's/-[^-]*$//' | (grep -vE -- '^(free|free-examples)$' || true) | sed 
's/^/constraints: /' | sed 's/$/ 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 $WITHCOMPILER ${TEST} ${BENCH} all | color_cabal_output
+  # cabal check...
+  - (cd ${PKGDIR_free} && ${CABAL} -vnormal check)
+  - (cd ${PKGDIR_free_examples} && ${CABAL} -vnormal check)
+  # haddock...
+  - ${CABAL} v2-haddock $WITHCOMPILER --with-haddock $HADDOCK ${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 
("0.9.20191126",["--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-5.1.3/CHANGELOG.markdown
--- old/free-5.1/CHANGELOG.markdown     2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.3/CHANGELOG.markdown   2001-09-09 03:46:40.000000000 +0200
@@ -1,3 +1,18 @@
+5.1.3 [2019.11.26]
+------------------
+* Allow building with `template-haskell-2.16` (GHC 8.10).
+* Add `Eq{1,2}`, `Ord{1,2}`, `Read{1,2}`, and `Show{1,2}` instances for
+  `CofreeF`.
+
+5.1.2 [2019.08.27]
+------------------
+* Implement more performant versions of `some` and `many` in the `Alternative`
+  instance for the final `Alt` encoding.
+
+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/HLint.hs new/free-5.1.3/HLint.hs
--- old/free-5.1/HLint.hs       2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.3/HLint.hs     1970-01-01 01:00:00.000000000 +0100
@@ -1,15 +0,0 @@
-import "hint" HLint.HLint
-
-infixr 5 :<
-
--- This affects performance
-ignore "Redundant lambda"
-
--- This is not valid for improve
-ignore "Eta reduce"
-
--- DeriveDataTypable noise
-ignore "Unused LANGUAGE pragma"
-
--- They are clearer in places
-ignore "Avoid lambda"
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/examples/PerfTH.hs 
new/free-5.1.3/examples/PerfTH.hs
--- old/free-5.1/examples/PerfTH.hs     2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.3/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-5.1.3/examples/RetryTH.hs
--- old/free-5.1/examples/RetryTH.hs    2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.3/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-5.1.3/examples/free-examples.cabal
--- old/free-5.1/examples/free-examples.cabal   2018-07-03 13:58:21.000000000 
+0200
+++ new/free-5.1.3/examples/free-examples.cabal 2001-09-09 03:46:40.000000000 
+0200
@@ -16,8 +16,10 @@
              , 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
+             , GHC == 8.10.1
 synopsis:      Monads for free
 description:   Examples projects using @free@
 build-type:    Simple
@@ -41,6 +43,9 @@
     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 +78,7 @@
   build-depends:
     base         == 4.*,
     base-compat,
+    fail         == 4.9.*,
     free,
     mtl          >= 2.0.1 && < 2.3,
     rdtsc,
@@ -82,12 +88,14 @@
   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-5.1.3/free.cabal
--- old/free-5.1/free.cabal     2018-07-03 13:58:21.000000000 +0200
+++ new/free-5.1.3/free.cabal   2001-09-09 03:46:40.000000000 +0200
@@ -1,6 +1,6 @@
 name:          free
 category:      Control, Monads
-version:       5.1
+version:       5.1.3
 license:       BSD3
 cabal-version: 1.18
 license-file:  LICENSE
@@ -16,8 +16,10 @@
              , 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
+             , GHC == 8.10.1
 synopsis:      Monads for free
 description:
   Free monads are useful for many tree-like structures and domain specific 
languages.
@@ -43,11 +45,11 @@
 extra-source-files:
   .ghci
   .gitignore
+  .hlint.yaml
   .travis.yml
   .vim.custom
   README.markdown
   CHANGELOG.markdown
-  HLint.hs
   doc/proof/Control/Comonad/Cofree/*.md
   doc/proof/Control/Comonad/Trans/Cofree/*.md
   examples/free-examples.cabal
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Alternative/Free/Final.hs 
new/free-5.1.3/src/Control/Alternative/Free/Final.hs
--- old/free-5.1/src/Control/Alternative/Free/Final.hs  2018-07-03 
13:58:21.000000000 +0200
+++ new/free-5.1.3/src/Control/Alternative/Free/Final.hs        2001-09-09 
03:46:40.000000000 +0200
@@ -48,6 +48,8 @@
 instance Alternative (Alt f) where
   empty = Alt (\_ -> empty)
   Alt x <|> Alt y = Alt (\k -> x k <|> y k)
+  some (Alt x) = Alt $ \k -> some (x k)
+  many (Alt x) = Alt $ \k -> many (x k)
 
 instance Semigroup (Alt f a) where
   (<>) = (<|>)
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Comonad/Trans/Cofree.hs 
new/free-5.1.3/src/Control/Comonad/Trans/Cofree.hs
--- old/free-5.1/src/Control/Comonad/Trans/Cofree.hs    2018-07-03 
13:58:21.000000000 +0200
+++ new/free-5.1.3/src/Control/Comonad/Trans/Cofree.hs  2001-09-09 
03:46:40.000000000 +0200
@@ -7,6 +7,7 @@
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE DeriveGeneric #-}
 #endif
+#include "free-common.h"
 
 -----------------------------------------------------------------------------
 -- |
@@ -42,6 +43,7 @@
 import Data.Bifoldable
 import Data.Bitraversable
 import Data.Foldable
+import Data.Functor.Classes
 import Data.Functor.Identity
 import Data.Traversable
 import Control.Monad (liftM)
@@ -67,6 +69,74 @@
 #endif
            )
 
+#ifdef LIFTED_FUNCTOR_CLASSES
+instance Show1 f => Show2 (CofreeF f) where
+  liftShowsPrec2 spa _sla spb slb d (a :< fb) =
+    showParen (d > 5) $
+      spa 6 a . showString " :< " . liftShowsPrec spb slb 6 fb
+
+instance (Show1 f, Show a) => Show1 (CofreeF f a) where
+  liftShowsPrec = liftShowsPrec2 showsPrec showList
+
+#else
+instance (Functor f, Show1 f, Show a) => Show1 (CofreeF f a) where
+  showsPrec1 d (a :< fb) = showParen (d > 5) $
+    showsPrec 6 a .  showString " :< " . showsPrec1 6 fb
+#endif
+
+#ifdef LIFTED_FUNCTOR_CLASSES
+instance Read1 f => Read2 (CofreeF f) where
+  liftReadsPrec2 rpa _rla rpb rlb d =
+    readParen (d > 5) $
+      (\r' -> [ (u :< v, w)
+              | (u, s) <- rpa 6 r'
+              , (":<", t) <- lex s
+              , (v, w) <- liftReadsPrec rpb rlb 6 t
+              ])
+
+instance (Read1 f, Read a) => Read1 (CofreeF f a) where
+  liftReadsPrec = liftReadsPrec2 readsPrec readList
+#else
+instance (Read1 f, Read a) => Read1 (CofreeF f a) where
+  readsPrec1 d =
+    readParen (d > 5) $
+      (\r' -> [ (u :< v,w)
+              | (u, s) <- readsPrec 6 r'
+              , (":<", t) <- lex s
+              , (v, w) <- readsPrec1 6 t
+              ])
+#endif
+
+#ifdef LIFTED_FUNCTOR_CLASSES
+instance Eq1 f => Eq2 (CofreeF f) where
+  liftEq2 eqa eqfb (a :< fb) (a' :< fb') = eqa a a' && liftEq eqfb fb fb'
+
+instance (Eq1 f, Eq a) => Eq1 (CofreeF f a) where
+  liftEq = liftEq2 (==)
+#else
+instance (Eq1 f, Eq a) => Eq1 (CofreeF f a) where
+  eq1 (a :< fb) (a' :< fb') = a == a' && eq1 fb fb'
+#endif
+
+#ifdef LIFTED_FUNCTOR_CLASSES
+instance Ord1 f => Ord2 (CofreeF f) where
+  liftCompare2 cmpa cmpfb (a :< fb) (a' :< fb') =
+    case cmpa a a' of
+      LT -> LT
+      EQ -> liftCompare cmpfb fb fb'
+      GT -> GT
+
+instance (Ord1 f, Ord a) => Ord1 (CofreeF f a) where
+  liftCompare = liftCompare2 compare
+#else
+instance (Ord1 f, Ord a) => Ord1 (CofreeF f a) where
+  compare1 (a :< fb) (a' :< fb') =
+    case compare a a' of
+      LT -> LT
+      EQ -> compare1 fb fb'
+      GT -> GT
+#endif
+
 -- | Extract the head of the base functor
 headF :: CofreeF f a b -> a
 headF (a :< _) = a
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Monad/Free/TH.hs 
new/free-5.1.3/src/Control/Monad/Free/TH.hs
--- old/free-5.1/src/Control/Monad/Free/TH.hs   2018-07-03 13:58:21.000000000 
+0200
+++ new/free-5.1.3/src/Control/Monad/Free/TH.hs 2001-09-09 03:46:40.000000000 
+0200
@@ -110,9 +110,9 @@
             [ "expected final return type `" ++ pprint n ++ "'"
             , "but got `" ++ pprint name ++ "'"
             , "in a constructor's argument type: `" ++ pprint t ++ "'" ]
-          let tup = foldl AppT (TupleT $ length ts) ts
+          let tup = nonUnaryTupleT ts
           xs <- mapM (const $ newName "x") ts
-          return $ Captured tup (LamE (map VarP xs) (TupE (map VarE xs)))
+          return $ Captured tup (LamE (map VarP xs) (nonUnaryTupE $ map VarE 
xs))
         _ -> fail $ unlines
               [ "expected a type variable `" ++ pprint n ++ "'"
               , "or a type like (a1 -> ... -> aN -> " ++ pprint n ++ ")"
@@ -129,6 +129,18 @@
       , "but got `" ++ pprint rt ++ "'"
       , "in a constructor's argument type: `" ++ pprint t ++ "'" ]
 
+    nonUnaryTupleT :: [Type] -> Type
+    nonUnaryTupleT [t'] = t'
+    nonUnaryTupleT ts   = foldl AppT (TupleT $ length ts) ts
+
+    nonUnaryTupE :: [Exp] -> Exp
+    nonUnaryTupE [e] = e
+    nonUnaryTupE es  = TupE $
+#if MIN_VERSION_template_haskell(2,16,0)
+                              map Just
+#endif
+                              es
+
 mkArg n _ = fail $ unlines
   [ "expected a type variable"
   , "but got `" ++ pprint n ++ "'"
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' 
'--exclude=.svnignore' old/free-5.1/src/Control/Monad/Free.hs 
new/free-5.1.3/src/Control/Monad/Free.hs
--- old/free-5.1/src/Control/Monad/Free.hs      2018-07-03 13:58:21.000000000 
+0200
+++ new/free-5.1.3/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-5.1.3/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-5.1.3/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-5.1.3/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-5.1.3/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-5.1.3/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-5.1.3/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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