There are transformers-0.6 install plans for GHC-8.8+ only

Author: phadej

.github/workflows/haskell-ci.yml

@@ -8,9 +8,9 @@
 #
 # For more information, see https://github.com/haskell-CI/haskell-ci
 #
-# version: 0.15.20220808
+# version: 0.15.20221225
 #
-# REGENDATA ("0.15.20220808",["github","--config=cabal.haskell-ci","lattices.cabal"])
+# REGENDATA ("0.15.20221225",["github","--config=cabal.haskell-ci","lattices.cabal"])
 #
 name: Haskell-CI
 on:
@@ -32,14 +32,14 @@ jobs:
     strategy:
       matrix:
         include:
-          - compiler: ghc-9.4.1
+          - compiler: ghc-9.4.4
             compilerKind: ghc
-            compilerVersion: 9.4.1
+            compilerVersion: 9.4.4
             setup-method: ghcup
             allow-failure: false
-          - compiler: ghc-9.2.4
+          - compiler: ghc-9.2.5
             compilerKind: ghc
-            compilerVersion: 9.2.4
+            compilerVersion: 9.2.5
             setup-method: ghcup
             allow-failure: false
           - compiler: ghc-9.0.2
@@ -187,7 +187,7 @@ jobs:
       - name: cache (tools)
         uses: actions/cache@v2
         with:
-          key: ${{ runner.os }}-${{ matrix.compiler }}-tools-ee480724
+          key: ${{ runner.os }}-${{ matrix.compiler }}-tools-4095ff06
           path: ~/.haskell-ci-tools
       - name: install cabal-plan
         run: |
@@ -290,5 +290,5 @@ jobs:
           rm -f cabal.project.local
       - name: constraint set transformers-0.6
         run: |
-          $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --constraint='transformers ^>=0.6' --dependencies-only -j2 all
-          $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --constraint='transformers ^>=0.6' all
+          if [ $((HCNUMVER >= 80800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --constraint='transformers ^>=0.6' --dependencies-only -j2 all ; fi
+          if [ $((HCNUMVER >= 80800)) -ne 0 ] ; then $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --constraint='transformers ^>=0.6' all ; fi

cabal.haskell-ci

@@ -3,4 +3,6 @@ doctest:  <9.0
 docspec:  True
 
 constraint-set transformers-0.6
+  -- https://github.com/haskell-infra/hackage-trustees/issues/352
+  ghc: >=8.8
   constraints: transformers ^>=0.6

lattices.cabal

@@ -33,8 +33,8 @@ tested-with:
    || ==8.8.3
    || ==8.10.4
    || ==9.0.2
-   || ==9.2.4
-   || ==9.4.1
+   || ==9.2.5
+   || ==9.4.4
 
 synopsis:
   Fine-grained library for constructing and manipulating lattices