diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 4a2b56a..d4b4f36 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -122,11 +122,6 @@ jobs:
         uses: actions/checkout@v3
         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
@@ -135,21 +130,6 @@ jobs:
         run: |
           mkdir -p unpacked
           find sdist -maxdepth 1 -type f -name '*.tar.gz' -exec tar -C $GITHUB_WORKSPACE/unpacked -xzvf {} \;
-      - name: generate cabal.project
-        run: |
-          PKGDIR_cem_script="$(find "$GITHUB_WORKSPACE/unpacked" -maxdepth 1 -type d -regex '.*/cem-script-[0-9.]*')"
-          echo "PKGDIR_cem_script=${PKGDIR_cem_script}" >> "$GITHUB_ENV"
-          rm -f cabal.project cabal.project.local
-          touch cabal.project
-          touch cabal.project.local
-          echo "packages: ${PKGDIR_cem_script}" >> cabal.project
-          echo "package cem-script" >> 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: $_ installed\n" unless /^(cem-script)$/; }' >> 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