commercialhaskell · mpilgrem · Jun 28, 2026 · Jun 28, 2026
diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
@@ -16,10 +16,15 @@ on:
 env:
   GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-# As of 2026-03-01:
-# * ubuntu-latest comes with Stack 3.9.3 and GHC 9.14.1; and
-# * windows-latest comes with Stack 3.9.1 and GHC 9.14.1.
-# However, macos-15-intel and macos-latest do not come with Haskell tools.
+# As of 2026-06-28:
+# * ubuntu-latest comes with Stack 3.11.1 and GHC 9.14.1; and
+# * windows-latest comes with Stack 3.11.1 and GHC 9.14.1.
+#
+# However, the following  ubuntu-24.04-arm, macos-15-intel and macos-latest do
+# not come with Haskell tools:
+# * ubuntu-24.04-arm;
+# * macos-15-intel; and
+# * macos-latest
 #
 # windows-latest no longer comes with NSIS 3.10, for which the default value of
 # the 'Unicode' installer attribute is 'true'. However, that is not the
@@ -43,7 +48,7 @@ jobs:
           # Stack's project-level configuration (stack.yaml) specifies the
           # multi-architecture (including Linux/Aarch64) Docker image published
           # by Oliver Benz (@benz0li, on GitHub). That image comes with
-          # Stack 3.9.3. (Note that the online documentation for
+          # Stack 3.11.1. (Note that the online documentation for
           # '--docker-stack-exe image' specifies that the host Stack and image
           # Stack must have the same version number.)
           release-args: "--alpine --stack-args --docker-stack-exe=image"
@@ -61,16 +66,16 @@ jobs:
           cache-bust: "2024-11-05"
     steps:
     - name: Clone project
-      uses: actions/checkout@v6
+      uses: actions/checkout@v7
     - name: Cache dependencies on Unix-like OS
       if: startsWith(runner.os, 'Linux') || startsWith(runner.os, 'macOS')
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: ~/.stack
         key: ${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('stack.yaml') }}-${{ matrix.cache-bust }}
     - name: Cache dependencies on Windows
       if: startsWith(runner.os, 'Windows')
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           ~\AppData\Roaming\stack
@@ -97,21 +102,13 @@ jobs:
 
         if [[ "${{ matrix.os }}" == "ubuntu-24.04-arm" || "${{ matrix.os }}" == "macos-15-intel" || "${{ matrix.os }}" == "macos-latest" ]]
         then
-          # As at 2026-03-01:
+          # As at 2026-06-28:
           #
           # * ubuntu-24.04-arm, macos-15-intel and macos-latest do not include
           #   Haskell tools.
           curl -sSL https://get.haskellstack.org/ | sh
         fi
 
-        if [[ "${{ matrix.os }}" == "windows-latest" ]]
-        then
-          # As at 2026-03-01:
-          #
-          # * windows-latest does not include Stack 3.9.3.
-          stack upgrade
-        fi
-
         if [[ "${{ matrix.os }}" == "ubuntu-latest" ]]
         then
           # Install a faster linker (lld) than Ubuntu's default.
@@ -188,7 +185,7 @@ jobs:
         stack etc/scripts/release.hs build ${{ matrix.release-args }}
 
     - name: Upload bindist
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: ${{ runner.os }}-${{ runner.arch }}
         path: _release/stack-*
@@ -203,27 +200,27 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     steps:
     - name: Download Linux/x86_64 artifact
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
       with:
         name: Linux-X64
         path: _release
     - name: Download macOS/x86_64 artifact
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
       with:
         name: macOS-X64
         path: _release
     - name: Download macOS/AArch64 artifact
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
       with:
         name: macOS-ARM64
         path: _release
     - name: Download Windows/x86_64 artifact
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
       with:
         name: Windows-X64
         path: _release
     - name: Download Linux/AArch64 artifact
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
       with:
         name: Linux-ARM64
         path: _release
@@ -242,7 +239,7 @@ jobs:
     - name: Create GitHub release (final)
       id: github_release_final
       if: "!startsWith(github.ref, 'refs/tags/rc/')"
-      uses: ncipollo/release-action@v1.20.0
+      uses: ncipollo/release-action@v1.21.0
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
@@ -261,7 +258,7 @@ jobs:
     - name: Create GitHub release (release candidate)
       id: github_release_rc
       if: "startsWith(github.ref, 'refs/tags/rc/')"
-      uses: ncipollo/release-action@v1.20.0
+      uses: ncipollo/release-action@v1.21.0
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Clone project
-      uses: actions/checkout@v6
+      uses: actions/checkout@v7
     - name: Apply yamllint
       uses: ibiqlik/action-yamllint@v3
       with:

diff --git a/.github/workflows/stan.yml b/.github/workflows/stan.yml
@@ -11,10 +11,10 @@ jobs:
 
     steps:
     - name: Clone project
-      uses: actions/checkout@v6
+      uses: actions/checkout@v7
 
     - name: Cache dependencies
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: ~/.stack
         key: ${{ runner.os }}-${{ hashFiles('stack.yaml') }}
@@ -33,7 +33,7 @@ jobs:
       run: .bin/stan report --cabal-file-path=stack.cabal
 
     - name: Upload HTML report
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: Stan_report
         path: stan.html
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
@@ -9,9 +9,9 @@ on:
     - rc/**
   workflow_dispatch:
 
-# As of 2026-03-01:
-# * ubuntu-latest comes with Stack 3.9.3 and GHC 9.14.1; and
-# * windows-latest comes with Stack 3.9.1 and GHC 9.14.1.
+# As of 2026-06-28:
+# * ubuntu-latest comes with Stack 3.11.1 and GHC 9.14.1; and
+# * windows-latest comes with Stack 3.11.1 and GHC 9.14.1.
 # However, macos-15-intel and macos-latest do not come with Haskell tools.
 
 jobs:
@@ -20,9 +20,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Clone project
-      uses: actions/checkout@v6
+      uses: actions/checkout@v7
     - name: Cache dependencies
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: ~/.stack
         key: ${{ runner.os }}-${{ hashFiles('stack.yaml') }}
@@ -55,16 +55,16 @@ jobs:
           stack-args: ""
     steps:
     - name: Clone project
-      uses: actions/checkout@v6
+      uses: actions/checkout@v7
     - name: Cache dependencies on Unix-like OS
       if: startsWith(runner.os, 'Linux') || startsWith(runner.os, 'macOS')
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: ~/.stack
         key: ${{ runner.os }}-${{ hashFiles('stack.yaml') }}-${{ matrix.extra-suffix }}
     - name: Cache dependencies on Windows
       if: startsWith(runner.os, 'Windows')
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           ~\AppData\Roaming\stack
@@ -78,20 +78,12 @@ jobs:
 
         if [[ "${{ matrix.os }}" == "macos-latest" ]]
         then
-          # As at 2026-03-01:
+          # As at 2026-06-28:
           #
           # * macos-latest does not include Haskell tools.
           curl -sSL https://get.haskellstack.org/ | sh
         fi
 
-        if [[ "${{ matrix.os }}" == "windows-latest" ]]
-        then
-          # As at 2026-03-01:
-          #
-          # * windows-latest does not include Stack 3.9.3.
-          stack upgrade
-        fi
-
         if [[ "${{ matrix.extra-suffix }}" == "alpine" ]]
         then
             mkdir -p ~/.stack