Remove niche languages with heavy toolchains from execution in GH actions

.github/workflows/pytest.yml

@@ -92,12 +92,6 @@ jobs:
         if: steps.cache-go-binaries.outputs.cache-hit != 'true'
         shell: bash
         run: go install golang.org/x/tools/gopls@latest
-      - name: Set up Elixir
-        if: runner.os != 'Windows'
-        uses: erlef/setup-beam@v1
-        with:
-          elixir-version: "1.19.3"
-          otp-version: "28"
 #      Erlang currently not tested in CI, random hangings on macos, always hangs on ubuntu
 #      In local tests, erlang seems to work though
 #      - name: Install Erlang Language Server
@@ -202,77 +196,6 @@ jobs:
       - name: Install Ruby language server
         shell: bash
         run: gem install ruby-lsp
-      - name: Install OCaml and opam
-        uses: ocaml/setup-ocaml@v3
-        with:
-          ocaml-compiler: ${{ runner.os == 'Windows' && '4.14' || '5.3.x' }}
-          dune-cache: true
-          opam-repositories: |
-            ${{ runner.os == 'Windows' && 'opam-repository-mingw: https://github.com/ocaml-opam/opam-repository-mingw.git#sunset' || '' }}
-            default: https://github.com/ocaml/opam-repository.git
-      - name: Install OCaml packages
-        shell: bash
-        run: |
-          if [ "$RUNNER_OS" = "Windows" ]; then
-            opam install -y dune ocaml-lsp-server
-          else
-            # Require ocaml-lsp-server >= 1.23.0 for cross-file reference support
-            opam install -y dune 'ocaml-lsp-server>=1.23.0'
-          fi
-      - name: Install R
-        uses: r-lib/actions/setup-r@v2
-        with:
-          r-version: '4.4.2'
-          use-public-rspm: true
-      - name: Install R sysdeps (libuv for fs package)
-        if: runner.os == 'Linux'
-        shell: bash
-        run: sudo apt-get update && sudo apt-get install -y libuv1-dev
-      - name: Install R language server
-        shell: bash
-        run: |
-          Rscript -e "install.packages('languageserver', repos='https://cloud.r-project.org')"
-      - name: Set up Julia
-        uses: julia-actions/setup-julia@v2
-        with:
-          version: '1.12.6'
-      - name: Install Julia LanguageServer
-        shell: bash
-        run: julia -e 'using Pkg; Pkg.add(Pkg.PackageSpec(name="LanguageServer", version="5.0.0"))'
-      - name: Setup Haskell toolchain
-        if: runner.os != 'Windows'
-        uses: haskell/ghcup-setup@v1
-        with:
-          ghc: '9.12.2'
-          cabal: '3.10.3.0'
-          hls: '2.11.0.0'
-      - name: Verify Haskell tools
-        if: runner.os != 'Windows'
-        run: |
-          echo "Verifying installed Haskell tools:"
-          which ghc && ghc --version
-          which cabal && cabal --version
-          # HLS verification - non-blocking in case of version incompatibility
-          if command -v haskell-language-server-wrapper &>/dev/null; then
-            echo "Found haskell-language-server-wrapper"
-            haskell-language-server-wrapper --version || echo "WARNING: HLS wrapper found but version check failed"
-          elif command -v haskell-language-server &>/dev/null; then
-            echo "Found haskell-language-server"
-            haskell-language-server --version || echo "WARNING: HLS found but version check failed"
-          else
-            echo "WARNING: HLS not found (may be incompatible with GHC 9.12.2)"
-            echo "This is not a critical error - tests will use HLS if available at runtime"
-          fi
-        shell: bash
-      - name: Pre-build Haskell test project for HLS
-        if: runner.os != 'Windows'
-        run: |
-          cd test/resources/repos/haskell/test_repo
-          cabal update
-          cabal build --only-dependencies
-          cabal build
-          echo "Haskell test project built successfully"
-        shell: bash
       - name: Install Zig
         uses: mlugg/setup-zig@v2
         with: