diff --git a/.github/workflows/root-ci-config/build_root.py b/.github/workflows/root-ci-config/build_root.py
index ed9303effd695..ca8069a20dbd0 100755
--- a/.github/workflows/root-ci-config/build_root.py
+++ b/.github/workflows/root-ci-config/build_root.py
@@ -46,12 +46,16 @@
     CONNECTION = None
 
 WINDOWS = (os.name == 'nt')
-WORKDIR = (os.environ['HOME'] + '/ROOT-CI') if not WINDOWS else 'C:/ROOT-CI'
+try:
+    WORKDIR = (os.environ['GITHUB_WORKSPACE'])
+except:
+    WORKDIR = (os.environ['HOME'] + '/ROOT-CI') if not WINDOWS else 'C:/ROOT-CI'
 COMPRESSIONLEVEL = 6 if not WINDOWS else 1
 
 
 def main():
     # openstack.enable_logging(debug=True)
+    print("WORKDIR=" + WORKDIR)
 
     # used when uploading artifacts, calculate early since build times are inconsistent
     yyyy_mm_dd = datetime.datetime.today().strftime('%Y-%m-%d')
@@ -65,7 +69,8 @@ def main():
     if not pull_request:
         build_utils.print_info("head_ref same as base_ref, assuming non-PR build")
 
-    cleanup_previous_build()
+    if WINDOWS:
+        cleanup_previous_build()
 
     # Load CMake options from .github/workflows/root-ci-config/buildconfig/[platform].txt
     this_script_dir = os.path.dirname(os.path.abspath(__file__))
@@ -73,7 +78,8 @@ def main():
     options_dict = {
         **load_config(f'{this_script_dir}/buildconfig/global.txt'),
         # file below overwrites values from above
-        **load_config(f'{this_script_dir}/buildconfig/{args.platform}.txt')
+        **load_config(f'{this_script_dir}/buildconfig/{args.platform}.txt'),
+        **load_config(f'buildconfig_overrides.txt')
     }
 
     options = build_utils.cmake_options_from_dict(options_dict)
@@ -113,7 +119,8 @@ def main():
             build_utils.print_warning(f'Failed to download: {err}')
             args.incremental = False
 
-    git_pull("src", args.repository, args.base_ref)
+    if WINDOWS:
+        git_pull("src", args.repository, args.base_ref)
 
     if pull_request:
       base_head_sha = get_base_head_sha("src", args.repository, args.sha, args.head_sha)
@@ -121,7 +128,7 @@ def main():
       head_ref_src, _, head_ref_dst = args.head_ref.partition(":")
       head_ref_dst = head_ref_dst or "__tmp"
 
-      rebase("src", "origin", base_head_sha, head_ref_dst, args.head_sha)
+      #rebase("src", "origin", base_head_sha, head_ref_dst, args.head_sha)
 
     testing: bool = options_dict['testing'].lower() == "on"
 
@@ -226,11 +233,6 @@ def cleanup_previous_build():
             }}
             New-Item -Force -Type directory -Path {WORKDIR}
         """)
-    else:
-        # mac/linux/POSIX
-        result = subprocess_with_log(f"""
-            rm -rf {WORKDIR}/*
-        """)
 
     if result != 0:
         die(result, "Failed to clean up previous artifacts")
@@ -278,9 +280,9 @@ def download_artifacts(obj_prefix: str):
             # TODO: Simplify after ROOT is Python 3.12+ only
             # c.f. https://docs.python.org/3.12/library/tarfile.html#extraction-filters
             if hasattr(tarfile, "data_filter"):
-                tar.extractall(WORKDIR, filter="data")
+                tar.extract("build", WORKDIR, filter="data")
             else:
-                tar.extractall(WORKDIR)
+                tar.extract("build", WORKDIR)
 
         build_utils.log.add(f'\ncd {WORKDIR} && tar -xf {tar_path}\n')
 
diff --git a/.github/workflows/root-ci.yml b/.github/workflows/root-ci.yml
index c7b7a82168116..378b47ba458f4 100644
--- a/.github/workflows/root-ci.yml
+++ b/.github/workflows/root-ci.yml
@@ -93,7 +93,7 @@ jobs:
       contents: read
 
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         # Specify platform + arch + (optional) build option overrides
         #
@@ -119,14 +119,17 @@ jobs:
       - ${{ matrix.platform }}
 
     name: |
-      ${{ matrix.platform }} ${{ matrix.arch }} 
+      ${{ matrix.platform }} ${{ matrix.arch }}
       ${{ (github.event_name != 'schedule' && github.event_name != 'workflow_dispatch' && join( matrix.overrides, ', ' )) || '' }}
 
     steps:
+      - name: Cleanup workdir
+        run: rm -rf ${{ github.workspace }}/*
+
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.ref_name }}
+          path: "src"
 
       - name: Apply option overrides from matrix for this job for non-release builds
         if: ${{ github.event_name != 'schedule' && github.event_name != 'workflow_dispatch' && matrix.overrides != NaN }}
@@ -159,7 +162,7 @@ jobs:
 
       - name: Set up curl CA bundle for Davix to work with https
         run: 'echo SSL_CERT_FILE=/opt/local/share/curl/curl-ca-bundle.crt >> $GITHUB_ENV'
-        
+
       - name: Pull Request Build
         shell: bash -leo pipefail {0}
         if: github.event_name == 'pull_request'
@@ -231,13 +234,7 @@ jobs:
   build-windows:
     # For any event that is not a PR, the CI will always run. In PRs, the CI
     # can be skipped if the tag [skip-ci] or [skip ci] is written in the title.
-    if: |
-        (github.repository_owner == 'root-project' && github.event_name != 'pull_request') ||
-        (github.event_name == 'pull_request' && !(
-          contains(github.event.pull_request.title, '[skip-ci]') ||
-          contains(github.event.pull_request.title, '[skip ci]') ||
-          contains(github.event.pull_request.labels.*.name, 'skip ci')
-        ))
+    if: false
 
     permissions:
       contents: read
@@ -276,7 +273,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.ref_name }}
+          path: "src"
 
       - name: Pull Request Build
         if: github.event_name == 'pull_request'
@@ -378,50 +375,50 @@ jobs:
         include:
           - image: fedora42
             overrides: ["CMAKE_CXX_STANDARD=23"]
-          - image: fedora43
-            overrides: ["CMAKE_CXX_STANDARD=23"]
-            is_special: true
-          - image: alma8
-          - image: alma9
-            overrides: ["CMAKE_BUILD_TYPE=Debug"]
-          - image: alma10
-          - image: ubuntu22
-            overrides: ["imt=Off", "CMAKE_BUILD_TYPE=Debug"]
-          - image: ubuntu2404
-            overrides: ["CMAKE_BUILD_TYPE=Debug"]
-          - image: ubuntu2504
-            overrides: ["CMAKE_CXX_STANDARD=23"]
-          - image: ubuntu2510
-            is_special: true
-            overrides: ["CMAKE_CXX_STANDARD=23"]
-          - image: debian125
-            overrides: ["CMAKE_CXX_STANDARD=20", "dev=ON", "CMAKE_CXX_FLAGS=-Wsuggest-override"]
-          - image: debian13
-            overrides: ["dev=ON", "CMAKE_CXX_FLAGS=-Wsuggest-override"]
-          # Special builds
-          - image: alma9
-            is_special: true
-            property: modules_off
-            overrides: ["runtime_cxxmodules=Off"]
-          - image: alma9
-            is_special: true
-            property: march_native
-            overrides: ["CMAKE_BUILD_TYPE=RelWithDebInfo", "CMAKE_CXX_FLAGS=-march=native", "CMAKE_C_FLAGS=-march=native", "builtin_zlib=ON", "builtin_zstd=ON"]
-          - image: alma9
-            is_special: true
-            property: arm64
-            overrides: ["CMAKE_BUILD_TYPE=RelWithDebInfo", "builtin_zlib=ON", "builtin_zstd=ON"]
-            architecture: ARM64
-          - image: alma10
-            is_special: true
-            property: "clang Ninja"
-            overrides: ["CMAKE_C_COMPILER=clang", "CMAKE_CXX_COMPILER=clang++"]
-            cmake_generator: Ninja
-          # Fedora Rawhide with Python debug build
-          - image: rawhide
-            is_special: true
-            property: "Fedora pydebug"
-            overrides: ["CMAKE_CXX_STANDARD=23"]
+#          - image: fedora43
+#            overrides: ["CMAKE_CXX_STANDARD=23"]
+#            is_special: true
+#          - image: alma8
+#          - image: alma9
+#            overrides: ["CMAKE_BUILD_TYPE=Debug"]
+#          - image: alma10
+#          - image: ubuntu22
+#            overrides: ["imt=Off", "CMAKE_BUILD_TYPE=Debug"]
+#          - image: ubuntu2404
+#            overrides: ["CMAKE_BUILD_TYPE=Debug"]
+#          - image: ubuntu2504
+#            overrides: ["CMAKE_CXX_STANDARD=23"]
+#          - image: ubuntu2510
+#            is_special: true
+#            overrides: ["CMAKE_CXX_STANDARD=23"]
+#          - image: debian125
+#            overrides: ["CMAKE_CXX_STANDARD=20", "dev=ON", "CMAKE_CXX_FLAGS=-Wsuggest-override"]
+#          - image: debian13
+#            overrides: ["dev=ON", "CMAKE_CXX_FLAGS=-Wsuggest-override"]
+#          # Special builds
+#          - image: alma9
+#            is_special: true
+#            property: modules_off
+#            overrides: ["runtime_cxxmodules=Off"]
+#          - image: alma9
+#            is_special: true
+#            property: march_native
+#            overrides: ["CMAKE_BUILD_TYPE=RelWithDebInfo", "CMAKE_CXX_FLAGS=-march=native", "CMAKE_C_FLAGS=-march=native", "builtin_zlib=ON", "builtin_zstd=ON"]
+#          - image: alma9
+#            is_special: true
+#            property: arm64
+#            overrides: ["CMAKE_BUILD_TYPE=RelWithDebInfo", "builtin_zlib=ON", "builtin_zstd=ON"]
+#            architecture: ARM64
+#          - image: alma10
+#            is_special: true
+#            property: "clang Ninja"
+#            overrides: ["CMAKE_C_COMPILER=clang", "CMAKE_CXX_COMPILER=clang++"]
+#            cmake_generator: Ninja
+#          # Fedora Rawhide with Python debug build
+#          - image: rawhide
+#            is_special: true
+#            property: "Fedora pydebug"
+#            overrides: ["CMAKE_CXX_STANDARD=23"]
           # Disable GPU builds until the DNS problem is solved  
           # - image: ubuntu2404-cuda
           #   is_special: true
@@ -447,23 +444,39 @@ jobs:
         CONTAINER_IMAGE: "registry.cern.ch/root-ci/${{ matrix.image }}:buildready" #KEEP IN SYNC WITH ABOVE
         CONTAINER_OPTIONS: "--security-opt label=disable --rm ${{ matrix.property == 'gpu' && '--device nvidia.com/gpu=all' || '' }}" #KEEP IN SYNC WITH ABOVE
 
-    env:
-      BUILD_DIR: /github/home/ROOT-CI/build
-      INSTALL_DIR: /github/home/ROOT-CI/install
-      POST_INSTALL_DIR: /github/home/ROOT-CI/PostInstall
-
     steps:
-      - name: Configure large ccache
-        if: ${{ matrix.is_special }}
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJSON(github) }}
+          JOB_CONTEXT: ${{ toJSON(job) }}
+          ENV_CONTEXT: ${{ toJSON(env) }}
         run: |
-          ccache -o max_size=5G
-          ccache -p || true
-          ccache -s || true
+          echo "$GITHUB_CONTEXT"
+          echo "--------------------------"
+          echo "$JOB_CONTEXT"
+          echo "--------------------------"
+          echo "$ENV_CONTEXT"
 
-      - name: Configure small ccache
-        if: ${{ !matrix.is_special }}
+      # The github.workspace context variable returns the path *outside* of the container.
+      # Therefore, we need to define environment variables inside the container
+      - name: Define environment
         run: |
-          ccache -o max_size=1.5G
+          echo "SRC_DIR=${GITHUB_WORKSPACE}/src" >> "$GITHUB_ENV"
+          echo "BUILD_DIR=${GITHUB_WORKSPACE}/build" >> "$GITHUB_ENV"
+          echo "INSTALL_DIR=${GITHUB_WORKSPACE}/install" >> "$GITHUB_ENV"
+          echo "POST_INSTALL_DIR=${GITHUB_WORKSPACE}/postInstall" >> "$GITHUB_ENV"
+
+      - name: Cleanup home
+        run: rm -rf ${GITHUB_WORKSPACE}/* ${GITHUB_WORKSPACE}/.github
+
+      - name: Directory tree
+        run: ls -la
+
+      - name: Configure ccache
+        env:
+          CCACHE_SIZE: ${{ matrix.is_special && '5G' || '1.5G' }}
+        run: |
+          ccache -o max_size=${CCACHE_SIZE}
           ccache -p || true
           ccache -s || true
 
@@ -476,19 +489,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.ref_name }}
-
-      - name: Dump GitHub context
-        env:
-          GITHUB_CONTEXT: ${{ toJSON(github) }}
-          JOB_CONTEXT: ${{ toJSON(job) }}
-          ENV_CONTEXT: ${{ toJSON(env) }}
-        run: |
-          echo "$GITHUB_CONTEXT"
-          echo "--------------------------"
-          echo "$JOB_CONTEXT"
-          echo "--------------------------"
-          echo "$ENV_CONTEXT"
+          path: "src"
 
       - name: Print debug info
         run:  'printf "%s@%s\\n" "$(whoami)" "$(hostname)";
@@ -499,7 +500,7 @@ jobs:
         if: ${{ ( github.event_name != 'schedule' || matrix.is_special) && github.event_name != 'workflow_dispatch' && matrix.overrides != NaN }}
         env:
           OVERRIDES: ${{ join( matrix.overrides, ' ') }}
-          CONFIGFILE: '.github/workflows/root-ci-config/buildconfig/${{ matrix.image }}.txt'
+          CONFIGFILE: 'buildconfig_overrides.txt'
         shell: bash
         run: |
           set -x
@@ -530,7 +531,7 @@ jobs:
           INCREMENTAL: ${{ !contains(github.event.pull_request.labels.*.name, 'clean build') }}
           GITHUB_PR_ORIGIN: ${{ github.event.pull_request.head.repo.clone_url }}
           CMAKE_GENERATOR: ${{ matrix.cmake_generator }}
-        run: ".github/workflows/root-ci-config/build_root.py
+        run: "${SRC_DIR}/.github/workflows/root-ci-config/build_root.py
                     --buildtype       RelWithDebInfo
                     --platform        ${{ matrix.image }}
                     --dockeropts      \"$CONTAINER_OPTIONS\"
@@ -597,16 +598,17 @@ jobs:
           ccache -s || true
 
       - name: Install
-        run: "cmake --install ${{ env.BUILD_DIR }} --prefix ${{ env.INSTALL_DIR }}"
+        run: "cmake --install ${BUILD_DIR} --prefix ${INSTALL_DIR}"
 
       - name: Build post-install test project
         run: |
-          cmake -S test/PostInstall/ -B ${{ env.POST_INSTALL_DIR }} -DCMAKE_PREFIX_PATH=${{ env.INSTALL_DIR }};
-          cmake --build ${{ env.POST_INSTALL_DIR }};
+          cmake -S test/PostInstall/ -B ${POST_INSTALL_DIR} -DCMAKE_PREFIX_PATH=${INSTALL_DIR};
+          cmake --build ${POST_INSTALL_DIR};
 
       - name: CTest in post-install test project
-        working-directory: ${{ env.POST_INSTALL_DIR }}
-        run: ctest -j $(nproc)
+        run: |
+          cd ${POST_INSTALL_DIR}
+          test -j $(nproc)
 
   event_file:
     # For any event that is not a PR, the CI will always run. In PRs, the CI
diff --git a/roofit/roofit/src/RooGaussian.cxx b/roofit/roofit/src/RooGaussian.cxx
index f9741f66c3ffb..da1194c4b3302 100644
--- a/roofit/roofit/src/RooGaussian.cxx
+++ b/roofit/roofit/src/RooGaussian.cxx
@@ -55,6 +55,7 @@ RooGaussian::RooGaussian(const RooGaussian& other, const char* name) :
 
 double RooGaussian::evaluate() const
 {
+
    return RooFit::Detail::MathFuncs::gaussian(x, mean, sigma);
 }