Make read behave like read from base

.github/workflows/fourmolu.yaml

@@ -0,0 +1,10 @@
+name: Fourmolu
+on: push
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: haskell-actions/run-fourmolu@v10
+        with:
+          version: "0.15.0.0"

.github/workflows/haskell-ci.yml

@@ -0,0 +1,222 @@
+# This GitHub workflow config has been generated by a script via
+#
+#   haskell-ci 'github' '--config=cabal.haskell-ci' 'cabal.project'
+#
+# To regenerate the script (for example after adjusting tested-with) run
+#
+#   haskell-ci regenerate
+#
+# For more information, see https://github.com/haskell-CI/haskell-ci
+#
+# version: 0.19.20240708
+#
+# REGENDATA ("0.19.20240708",["github","--config=cabal.haskell-ci","cabal.project"])
+#
+name: Haskell-CI
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+  linux:
+    name: Haskell-CI - Linux - ${{ matrix.compiler }}
+    runs-on: ubuntu-20.04
+    timeout-minutes:
+      60
+    container:
+      image: buildpack-deps:jammy
+    continue-on-error: ${{ matrix.allow-failure }}
+    strategy:
+      matrix:
+        include:
+          - compiler: ghc-9.10.1
+            compilerKind: ghc
+            compilerVersion: 9.10.1
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-9.8.2
+            compilerKind: ghc
+            compilerVersion: 9.8.2
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-9.6.6
+            compilerKind: ghc
+            compilerVersion: 9.6.6
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-9.4.8
+            compilerKind: ghc
+            compilerVersion: 9.4.8
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-9.2.2
+            compilerKind: ghc
+            compilerVersion: 9.2.2
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-9.0.2
+            compilerKind: ghc
+            compilerVersion: 9.0.2
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-8.10.7
+            compilerKind: ghc
+            compilerVersion: 8.10.7
+            setup-method: ghcup
+            allow-failure: false
+      fail-fast: false
+    steps:
+      - name: apt
+        run: |
+          apt-get update
+          apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
+          mkdir -p "$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 }}
+          HCVER: ${{ matrix.compilerVersion }}
+      - name: Set PATH and environment variables
+        run: |
+          echo "$HOME/.cabal/bin" >> $GITHUB_PATH
+          echo "LANG=C.UTF-8" >> "$GITHUB_ENV"
+          echo "CABAL_DIR=$HOME/.cabal" >> "$GITHUB_ENV"
+          echo "CABAL_CONFIG=$HOME/.cabal/config" >> "$GITHUB_ENV"
+          HCDIR=/opt/$HCKIND/$HCVER
+          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" >> "$GITHUB_ENV"
+          echo "HEADHACKAGE=false" >> "$GITHUB_ENV"
+          echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
+          echo "GHCJSARITH=0" >> "$GITHUB_ENV"
+        env:
+          HCKIND: ${{ matrix.compilerKind }}
+          HCNAME: ${{ matrix.compiler }}
+          HCVER: ${{ matrix.compilerVersion }}
+      - name: env
+        run: |
+          env
+      - name: write cabal config
+        run: |
+          mkdir -p $CABAL_DIR
+          cat >> $CABAL_CONFIG <<EOF
+          remote-build-reporting: anonymous
+          write-ghc-environment-files: never
+          remote-repo-cache: $CABAL_DIR/packages
+          logs-dir:          $CABAL_DIR/logs
+          world-file:        $CABAL_DIR/world
+          extra-prog-path:   $CABAL_DIR/bin
+          symlink-bindir:    $CABAL_DIR/bin
+          installdir:        $CABAL_DIR/bin
+          build-summary:     $CABAL_DIR/logs/build.log
+          store-dir:         $CABAL_DIR/store
+          install-dirs user
+            prefix: $CABAL_DIR
+          repository hackage.haskell.org
+            url: http://hackage.haskell.org/
+          EOF
+          cat >> $CABAL_CONFIG <<EOF
+          program-default-options
+            ghc-options: $GHCJOBS +RTS -M3G -RTS
+          EOF
+          cat $CABAL_CONFIG
+      - name: versions
+        run: |
+          $HC --version || true
+          $HC --print-project-git-commit-id || true
+          $CABAL --version || true
+      - name: update cabal index
+        run: |
+          $CABAL v2-update -v
+      - name: install cabal-plan
+        run: |
+          mkdir -p $HOME/.cabal/bin
+          curl -sL https://github.com/haskell-hvr/cabal-plan/releases/download/v0.7.3.0/cabal-plan-0.7.3.0-x86_64-linux.xz > cabal-plan.xz
+          echo 'f62ccb2971567a5f638f2005ad3173dba14693a45154c1508645c52289714cb2  cabal-plan.xz' | sha256sum -c -
+          xz -d < cabal-plan.xz > $HOME/.cabal/bin/cabal-plan
+          rm -f cabal-plan.xz
+          chmod a+x $HOME/.cabal/bin/cabal-plan
+          cabal-plan --version
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          path: source
+      - name: initial cabal.project for sdist
+        run: |
+          touch cabal.project
+          echo "packages: $GITHUB_WORKSPACE/source/." >> cabal.project
+          cat cabal.project
+      - name: sdist
+        run: |
+          mkdir -p sdist
+          $CABAL sdist all --output-dir $GITHUB_WORKSPACE/sdist
+      - name: unpack
+        run: |
+          mkdir -p unpacked
+          find sdist -maxdepth 1 -type f -name '*.tar.gz' -exec tar -C $GITHUB_WORKSPACE/unpacked -xzvf {} \;
+      - name: generate cabal.project
+        run: |
+          PKGDIR_scrive_prelude="$(find "$GITHUB_WORKSPACE/unpacked" -maxdepth 1 -type d -regex '.*/scrive-prelude-[0-9.]*')"
+          echo "PKGDIR_scrive_prelude=${PKGDIR_scrive_prelude}" >> "$GITHUB_ENV"
+          rm -f cabal.project cabal.project.local
+          touch cabal.project
+          touch cabal.project.local
+          echo "packages: ${PKGDIR_scrive_prelude}" >> cabal.project
+          echo "package scrive-prelude" >> cabal.project
+          echo "    ghc-options: -Werror=missing-methods" >> cabal.project
+          cat >> cabal.project <<EOF
+          EOF
+          $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: any.$_ installed\n" unless /^(scrive-prelude)$/; }' >> 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@v4
+        with:
+          key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
+          path: ~/.cabal/store
+          restore-keys: ${{ runner.os }}-${{ matrix.compiler }}-
+      - name: install dependencies
+        run: |
+          $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --dependencies-only -j2 all
+          $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dependencies-only -j2 all
+      - name: build w/o tests
+        run: |
+          $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
+      - name: build
+        run: |
+          $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH all --write-ghc-environment-files=always
+      - name: cabal check
+        run: |
+          cd ${PKGDIR_scrive_prelude} || false
+          ${CABAL} -vnormal check
+      - name: haddock
+        run: |
+          $CABAL v2-haddock --disable-documentation --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all
+      - name: unconstrained build
+        run: |
+          rm -f cabal.project.local
+          $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
+      - name: save cache
+        uses: actions/cache/save@v4
+        if: always()
+        with:
+          key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
+          path: ~/.cabal/store

cabal.haskell-ci

@@ -0,0 +1,2 @@
+branches:       master
+tests:          True

cabal.project

@@ -0,0 +1 @@
+packages: .

fourmolu.yaml

@@ -1,11 +1,56 @@
+# Number of spaces per indentation step
 indentation: 2
-function-arrows: leading # where to place arrows in type signatures
-comma-style: leading # for lists, tuples etc. - can also be 'trailing'
+
+# Max line length for automatic line breaking
+column-limit: none
+
+# Styling of arrows in type signatures (choices: trailing, leading, or leading-args)
+function-arrows: leading
+
+# How to place commas in multi-line lists, records, etc. (choices: leading or trailing)
+comma-style: leading
+
+# Styling of import/export lists (choices: leading, trailing, or diff-friendly)
 import-export-style: leading
-indent-wheres: true # 'false' means save space by only half-indenting the 'where' keyword
-record-brace-space: true # rec {x = 1} vs. rec{x = 1}
-newlines-between-decls: 1 # number of newlines between top-level declarations
-haddock-style: single-line # '--' vs. '{-'
+
+# Whether to full-indent or half-indent 'where' bindings past the preceding body
+indent-wheres: true
+
+# Whether to leave a space before an opening record brace
+record-brace-space: true
+
+# Number of spaces between top-level declarations
+newlines-between-decls: 1
+
+# How to print Haddock comments (choices: single-line, multi-line, or multi-line-compact)
+haddock-style: single-line
+
+# How to print module docstring
+haddock-style-module: null
+
+# Styling of let blocks (choices: auto, inline, newline, or mixed)
 let-style: inline
-in-style: left-align
-respectful: true # don't be too opinionated about newlines etc
+
+# How to align the 'in' keyword with respect to the 'let' keyword (choices: left-align, right-align, or no-space)
+in-style: no-space
+
+# Whether to put parentheses around a single constraint (choices: auto, always, or never)
+single-constraint-parens: never
+
+# Whether to put parentheses around a single deriving class (choices: auto, always, or never)
+single-deriving-parens: always
+
+# Output Unicode syntax (choices: detect, always, or never)
+unicode: never
+
+# Give the programmer more choice on where to insert blank lines
+respectful: true
+
+# Fixity information for operators
+fixities: []
+
+# Module reexports Fourmolu should know about
+reexports:
+- module Prelude exports Data.Function
+- module Prelude exports Control.Applicative
+- module Prelude exports Control.Monad

scrive-prelude.cabal

@@ -14,6 +14,8 @@ license:       BSD-3-Clause
 license-file:  LICENSE
 build-type:    Simple
 
+tested-with: GHC == { 8.10.7, 9.0.2, 9.2.2, 9.4.8, 9.6.6, 9.8.2, 9.10.1 }
+
 common common-stanza
   default-language:   Haskell2010
   default-extensions:
@@ -55,13 +57,17 @@ library
   import:           common-stanza
   hs-source-dirs:   src
   ghc-options:
-    -Werror -Wall -fno-warn-type-defaults -Wincomplete-record-updates
-    -Wredundant-constraints -Wunused-packages
+    -Wall -Wincomplete-record-updates -Wredundant-constraints -Wunused-packages
+
+  if impl(ghc >= 9.8)
+     ghc-options: -Wno-x-partial
+  else
+     ghc-options: -Wno-dodgy-imports
 
   ghc-prof-options: -fprof-auto -fno-prof-count-entries -fprof-auto-calls
   exposed-modules:  Prelude
   build-depends:
-    , base
+    , base <5
     , cond
     , exceptions
     , extra