Drop support for pre-8.0 versions of GHC

.github/workflows/haskell-ci.yml

@@ -8,9 +8,9 @@
 #
 # For more information, see https://github.com/haskell-CI/haskell-ci
 #
-# version: 0.19.20240416
+# version: 0.19.20240708
 #
-# REGENDATA ("0.19.20240416",["github","--config=cabal.haskell-ci","cabal.project"])
+# REGENDATA ("0.19.20240708",["github","--config=cabal.haskell-ci","cabal.project"])
 #
 name: Haskell-CI
 on:
@@ -23,24 +23,24 @@ jobs:
     timeout-minutes:
       60
     container:
-      image: buildpack-deps:bionic
+      image: buildpack-deps:jammy
     continue-on-error: ${{ matrix.allow-failure }}
     strategy:
       matrix:
         include:
-          - compiler: ghc-9.10.0.20240413
+          - compiler: ghc-9.10.1
             compilerKind: ghc
-            compilerVersion: 9.10.0.20240413
+            compilerVersion: 9.10.1
             setup-method: ghcup
             allow-failure: false
           - compiler: ghc-9.8.2
             compilerKind: ghc
             compilerVersion: 9.8.2
             setup-method: ghcup
             allow-failure: false
-          - compiler: ghc-9.6.5
+          - compiler: ghc-9.6.6
             compilerKind: ghc
-            compilerVersion: 9.6.5
+            compilerVersion: 9.6.6
             setup-method: ghcup
             allow-failure: false
           - compiler: ghc-9.4.8
@@ -66,61 +66,39 @@ jobs:
           - compiler: ghc-8.8.4
             compilerKind: ghc
             compilerVersion: 8.8.4
-            setup-method: hvr-ppa
+            setup-method: ghcup
             allow-failure: false
           - compiler: ghc-8.6.5
             compilerKind: ghc
             compilerVersion: 8.6.5
-            setup-method: hvr-ppa
+            setup-method: ghcup
             allow-failure: false
           - compiler: ghc-8.4.4
             compilerKind: ghc
             compilerVersion: 8.4.4
-            setup-method: hvr-ppa
+            setup-method: ghcup
             allow-failure: false
           - compiler: ghc-8.2.2
             compilerKind: ghc
             compilerVersion: 8.2.2
-            setup-method: hvr-ppa
+            setup-method: ghcup
             allow-failure: false
           - compiler: ghc-8.0.2
             compilerKind: ghc
             compilerVersion: 8.0.2
-            setup-method: hvr-ppa
-            allow-failure: false
-          - compiler: ghc-7.10.3
-            compilerKind: ghc
-            compilerVersion: 7.10.3
-            setup-method: hvr-ppa
-            allow-failure: false
-          - compiler: ghc-7.8.4
-            compilerKind: ghc
-            compilerVersion: 7.8.4
-            setup-method: hvr-ppa
+            setup-method: ghcup
             allow-failure: false
       fail-fast: false
     steps:
       - name: apt
         run: |
           apt-get update
-          apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
-          if [ "${{ matrix.setup-method }}" = ghcup ]; then
-            mkdir -p "$HOME/.ghcup/bin"
-            curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
-            chmod a+x "$HOME/.ghcup/bin/ghcup"
-            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.8.yaml;
-            "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
-            "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
-          else
-            apt-add-repository -y 'ppa:hvr/ghc'
-            apt-get update
-            apt-get install -y "$HCNAME"
-            mkdir -p "$HOME/.ghcup/bin"
-            curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
-            chmod a+x "$HOME/.ghcup/bin/ghcup"
-            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.8.yaml;
-            "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
-          fi
+          apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5 libnuma-dev
+          mkdir -p "$HOME/.ghcup/bin"
+          curl -sL https://downloads.haskell.org/ghcup/0.1.30.0/x86_64-linux-ghcup-0.1.30.0 > "$HOME/.ghcup/bin/ghcup"
+          chmod a+x "$HOME/.ghcup/bin/ghcup"
+          "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
+          "$HOME/.ghcup/bin/ghcup" install cabal 3.12.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
         env:
           HCKIND: ${{ matrix.compilerKind }}
           HCNAME: ${{ matrix.compiler }}
@@ -132,27 +110,18 @@ jobs:
           echo "CABAL_DIR=$HOME/.cabal" >> "$GITHUB_ENV"
           echo "CABAL_CONFIG=$HOME/.cabal/config" >> "$GITHUB_ENV"
           HCDIR=/opt/$HCKIND/$HCVER
-          if [ "${{ matrix.setup-method }}" = ghcup ]; then
-            HC=$("$HOME/.ghcup/bin/ghcup" whereis ghc "$HCVER")
-            HCPKG=$(echo "$HC" | sed 's#ghc$#ghc-pkg#')
-            HADDOCK=$(echo "$HC" | sed 's#ghc$#haddock#')
-            echo "HC=$HC" >> "$GITHUB_ENV"
-            echo "HCPKG=$HCPKG" >> "$GITHUB_ENV"
-            echo "HADDOCK=$HADDOCK" >> "$GITHUB_ENV"
-            echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
-          else
-            HC=$HCDIR/bin/$HCKIND
-            echo "HC=$HC" >> "$GITHUB_ENV"
-            echo "HCPKG=$HCDIR/bin/$HCKIND-pkg" >> "$GITHUB_ENV"
-            echo "HADDOCK=$HCDIR/bin/haddock" >> "$GITHUB_ENV"
-            echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
-          fi
-
+          HC=$("$HOME/.ghcup/bin/ghcup" whereis ghc "$HCVER")
+          HCPKG=$(echo "$HC" | sed 's#ghc$#ghc-pkg#')
+          HADDOCK=$(echo "$HC" | sed 's#ghc$#haddock#')
+          echo "HC=$HC" >> "$GITHUB_ENV"
+          echo "HCPKG=$HCPKG" >> "$GITHUB_ENV"
+          echo "HADDOCK=$HADDOCK" >> "$GITHUB_ENV"
+          echo "CABAL=$HOME/.ghcup/bin/cabal-3.12.1.0 -vnormal+nowrap" >> "$GITHUB_ENV"
           HCNUMVER=$(${HC} --numeric-version|perl -ne '/^(\d+)\.(\d+)\.(\d+)(\.(\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 0 ? $5 != 1 : $3))')
           echo "HCNUMVER=$HCNUMVER" >> "$GITHUB_ENV"
           echo "ARG_TESTS=--enable-tests" >> "$GITHUB_ENV"
           echo "ARG_BENCH=--enable-benchmarks" >> "$GITHUB_ENV"
-          if [ $((HCNUMVER >= 91000)) -ne 0 ] ; then echo "HEADHACKAGE=true" >> "$GITHUB_ENV" ; else echo "HEADHACKAGE=false" >> "$GITHUB_ENV" ; fi
+          echo "HEADHACKAGE=false" >> "$GITHUB_ENV"
           echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
           echo "GHCJSARITH=0" >> "$GITHUB_ENV"
         env:
@@ -181,18 +150,6 @@ jobs:
           repository hackage.haskell.org
             url: http://hackage.haskell.org/
           EOF
-          if $HEADHACKAGE; then
-          cat >> $CABAL_CONFIG <<EOF
-          repository head.hackage.ghc.haskell.org
-             url: https://ghc.gitlab.haskell.org/head.hackage/
-             secure: True
-             root-keys: 7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d
-                        26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329
-                        f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89
-             key-threshold: 3
-          active-repositories: hackage.haskell.org, head.hackage.ghc.haskell.org:override
-          EOF
-          fi
           cat >> $CABAL_CONFIG <<EOF
           program-default-options
             ghc-options: $GHCJOBS +RTS -M3G -RTS
@@ -216,7 +173,7 @@ jobs:
           chmod a+x $HOME/.cabal/bin/cabal-plan
           cabal-plan --version
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: source
       - name: initial cabal.project for sdist
@@ -246,18 +203,15 @@ jobs:
           package text-show
             ghc-options: -Werror
           EOF
-          if $HEADHACKAGE; then
-          echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> cabal.project
-          fi
-          $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: $_ installed\n" unless /^(text-show)$/; }' >> cabal.project.local
+          $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: any.$_ installed\n" unless /^(text-show)$/; }' >> cabal.project.local
           cat cabal.project
           cat cabal.project.local
       - name: dump install plan
         run: |
           $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dry-run all
           cabal-plan
       - name: restore cache
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
           path: ~/.cabal/store
@@ -278,9 +232,9 @@ jobs:
           ${CABAL} -vnormal check
       - name: haddock
         run: |
-          if [ $((HCNUMVER < 80000 || HCNUMVER >= 80400)) -ne 0 ] ; then $CABAL v2-haddock --disable-documentation --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all ; fi
+          if [ $((HCNUMVER >= 80400)) -ne 0 ] ; then $CABAL v2-haddock --disable-documentation --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all ; fi
       - name: save cache
-        uses: actions/cache/save@v3
+        uses: actions/cache/save@v4
         if: always()
         with:
           key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}

CHANGELOG.md

@@ -1,3 +1,8 @@
+## next [????.??.??]
+* Drop support for pre-8.0 versions of GHC.
+* Remove `TextShow.Data.OldTypeable`. The code in this module only worked with
+  old versions of GHC that are no longer supported.
+
 ### 3.10.5 [2024.04.20]
 * Support building with GHC 9.10.
 * Ensure that the `TextShow` instance for `TypeRep` properly displays unboxed

cabal.haskell-ci

@@ -1,6 +1,6 @@
-distribution:           bionic
+distribution:           jammy
 no-tests-no-benchmarks: False
 unconstrained:          False
 local-ghc-options:      -Werror
 -- Work around https://github.com/haskell/haddock/issues/574
-haddock:                <8.0 || >=8.4
+haddock:                >=8.4

shared/TextShow/TH/Names.hs

@@ -1,5 +1,5 @@
-{-# LANGUAGE CPP             #-}
-{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE CPP                   #-}
+{-# LANGUAGE TemplateHaskellQuotes #-}
 
 {-|
 Module:      TextShow.TH.Names
@@ -17,19 +17,14 @@ module TextShow.TH.Names (
     fdKeyTypeName,
     uniqueTypeName,
     asInt64ValName,
-#if MIN_VERSION_base(4,8,0)
     giveGCStatsTypeName,
     doCostCentresTypeName,
     doHeapProfileTypeName,
     doTraceTypeName,
-#endif
     ) where
 
-import Language.Haskell.TH.Syntax
-
-#if MIN_VERSION_base(4,8,2)
 import GHC.RTS.Flags (GiveGCStats, DoCostCentres, DoHeapProfile, DoTrace)
-#endif
+import Language.Haskell.TH.Syntax
 
 -------------------------------------------------------------------------------
 
@@ -79,42 +74,18 @@ asInt64ValName = mkNameG_v "base" "GHC.Event.Unique" "asInt"
 asInt64ValName = mkNameG_v "base" "GHC.Event.Unique" "asInt64"
 #endif
 
-#if MIN_VERSION_base(4,8,0)
 -- | The 'Name' of 'GiveGCStats'.
 giveGCStatsTypeName :: Name
-# if MIN_VERSION_base(4,8,2)
 giveGCStatsTypeName = ''GiveGCStats
-# else
-giveGCStatsTypeName = mkFlagsName_tc "GiveGCStats"
-# endif
 
 -- | The 'Name' of 'DoCostCentres'.
 doCostCentresTypeName :: Name
-# if MIN_VERSION_base(4,8,2)
 doCostCentresTypeName = ''DoCostCentres
-# else
-doCostCentresTypeName = mkFlagsName_tc "DoCostCentres"
-# endif
 
 -- | The 'Name' of 'DoHeapProfile'.
 doHeapProfileTypeName :: Name
-# if MIN_VERSION_base(4,8,2)
 doHeapProfileTypeName = ''DoHeapProfile
-# else
-doHeapProfileTypeName = mkFlagsName_tc "DoHeapProfile"
-# endif
 
 -- | The 'Name' of 'DoTrace'.
 doTraceTypeName :: Name
-# if MIN_VERSION_base(4,8,2)
 doTraceTypeName = ''DoTrace
-# else
-doTraceTypeName = mkFlagsName_tc "DoTrace"
-# endif
-
--- | Creates a 'Name' for a type from the "GHC.RTS.Flags" module.
-# if !(MIN_VERSION_base(4,8,2))
-mkFlagsName_tc :: String -> Name
-mkFlagsName_tc = mkNameG_tc "base" "GHC.RTS.Flags"
-# endif
-#endif

src/TextShow/Classes.hs

@@ -1,10 +1,8 @@
-{-# LANGUAGE CPP                        #-}
-{-# LANGUAGE DeriveDataTypeable         #-}
-{-# LANGUAGE OverloadedStrings          #-}
-{-# LANGUAGE StandaloneDeriving         #-}
+{-# LANGUAGE CPP                   #-}
+{-# LANGUAGE OverloadedStrings     #-}
 
 #if __GLASGOW_HASKELL__ >= 806
-{-# LANGUAGE QuantifiedConstraints      #-}
+{-# LANGUAGE QuantifiedConstraints #-}
 #endif
 
 {-|
@@ -19,7 +17,6 @@ The 'TextShow', 'TextShow1', and 'TextShow2' typeclasses.
 -}
 module TextShow.Classes where
 
-import           Data.Data (Typeable)
 import qualified Data.Text         as TS (Text, singleton)
 import qualified Data.Text.IO      as TS (putStrLn, hPutStrLn)
 import qualified Data.Text.Lazy    as TL (Text, singleton)
@@ -177,8 +174,6 @@ class TextShow a where
 
     {-# MINIMAL showbPrec | showb #-}
 
-deriving instance Typeable TextShow
-
 -- | Surrounds 'Builder' output with parentheses if the 'Bool' parameter is 'True'.
 --
 -- /Since: 2/
@@ -421,8 +416,6 @@ class
 
     {-# MINIMAL liftShowbPrec #-}
 
-deriving instance Typeable TextShow1
-
 -- | Lift the standard 'showbPrec' and 'showbList' functions through the
 -- type constructor.
 --
@@ -503,8 +496,6 @@ class
 
     {-# MINIMAL liftShowbPrec2 #-}
 
-deriving instance Typeable TextShow2
-
 -- | Lift two 'showbPrec' functions through the type constructor.
 --
 -- /Since: 2/

src/TextShow/Control/Applicative.hs

@@ -3,7 +3,7 @@
 {-# LANGUAGE PolyKinds         #-}
 {-# LANGUAGE TemplateHaskell   #-}
 
-{-# OPTIONS_GHC -fno-warn-orphans #-}
+{-# OPTIONS_GHC -Wno-orphans #-}
 {-|
 Module:      TextShow.Control.Applicative
 Copyright:   (C) 2014-2017 Ryan Scott

src/TextShow/Control/Concurrent.hs

@@ -3,7 +3,7 @@
 {-# LANGUAGE MagicHash                #-}
 {-# LANGUAGE TemplateHaskell          #-}
 {-# LANGUAGE UnliftedFFITypes         #-}
-{-# OPTIONS_GHC -fno-warn-orphans #-}
+{-# OPTIONS_GHC -Wno-orphans #-}
 {-|
 Module:      TextShow.Control.Concurrent
 Copyright:   (C) 2014-2017 Ryan Scott