diff --git a/.github/actions/setup-linux-toolchain/action.yml b/.github/actions/setup-linux-toolchain/action.yml
new file mode 100644
index 00000000..1a4f3df3
--- /dev/null
+++ b/.github/actions/setup-linux-toolchain/action.yml
@@ -0,0 +1,47 @@
+name: Setup Linux toolchain
+
+inputs:
+  arch:
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Set up environment
+      shell: bash
+      run: |
+        # ! Settings:
+        TOOLCHAIN_64_URL=https://downloads.tuxfamily.org/godotengine/toolchains/linux/2021-02-11/x86_64-godot-linux-gnu_sdk-buildroot.tar.bz2
+        TOOLCHAIN_64_SHA=16c8302fcb676c1f0fb9df73d6cff250ba1f4286
+        TOOLCHAIN_32_URL=https://downloads.tuxfamily.org/godotengine/toolchains/linux/2021-02-11/i686-godot-linux-gnu_sdk-buildroot.tar.bz2
+        TOOLCHAIN_32_SHA=6171652abc54ef219e5187bc53660ee4e2f796f4
+        # ! Export variables:
+        if [[ "${{ inputs.arch }}" == "x86_64" ]]; then
+          echo "TOOLCHAIN_URL=${TOOLCHAIN_64_URL}" >> "$GITHUB_ENV"
+          echo "TOOLCHAIN_SHA=${TOOLCHAIN_64_SHA}" >> "$GITHUB_ENV"
+        elif [[ "${{ inputs.arch }}" == "x86_32" ]]; then
+          echo "TOOLCHAIN_URL=${TOOLCHAIN_32_URL}" >> "$GITHUB_ENV"
+          echo "TOOLCHAIN_SHA=${TOOLCHAIN_32_SHA}" >> "$GITHUB_ENV"
+        fi
+
+    - name: Cache buildroot
+      id: cache-buildroot
+      uses: actions/cache@v4
+      with:
+        path: buildroot
+        key: ${{env.TOOLCHAIN_SHA}}
+
+    - name: Set up buildroot
+      if: steps.cache-buildroot.outputs.cache-hit != 'true'
+      shell: bash
+      run: |
+        mkdir buildroot
+        wget ${TOOLCHAIN_URL} -O buildroot/buildroot.tar.bz2
+        cd buildroot
+        echo "${TOOLCHAIN_SHA}  buildroot.tar.bz2"
+        echo "${TOOLCHAIN_SHA}  buildroot.tar.bz2" | shasum --check
+        tar -xjf buildroot.tar.bz2 --strip-components=1
+        ls -l
+        rm buildroot.tar.bz2
+        ./relocate-sdk.sh
+        cd ..
diff --git a/.github/workflows/gdextension.yml b/.github/workflows/gdextension.yml
index ac95ccb5..b8342db0 100644
--- a/.github/workflows/gdextension.yml
+++ b/.github/workflows/gdextension.yml
@@ -36,6 +36,7 @@ env:
   SCONSFLAGS: dev_build=no debug_symbols=no
   EM_VERSION: 3.1.45
   EM_CACHE_FOLDER: "emsdk-cache"
+  GODOT_VERSION: 4.2-stable
 
 jobs:
   gdextension:
@@ -132,25 +133,11 @@ jobs:
         id: output-name-prefix
         run: echo "name-prefix=${NAME_PREFIX}" >> $GITHUB_OUTPUT
 
-      - name: Set up Linux buildroot x86_64
-        if: matrix.opts.platform == 'linux' && matrix.opts.arch == 'x86_64'
-        run: |
-          wget https://downloads.tuxfamily.org/godotengine/toolchains/linux/2021-02-11/x86_64-godot-linux-gnu_sdk-buildroot.tar.bz2
-          tar -xjf x86_64-godot-linux-gnu_sdk-buildroot.tar.bz2
-          mv x86_64-godot-linux-gnu_sdk-buildroot buildroot
-          cd buildroot
-          ./relocate-sdk.sh
-          cd ..
-
-      - name: Set up Linux buildroot x86_32
-        if: matrix.opts.platform == 'linux' && matrix.opts.arch == 'x86_32'
-        run: |
-          wget https://downloads.tuxfamily.org/godotengine/toolchains/linux/2021-02-11/i686-godot-linux-gnu_sdk-buildroot.tar.bz2
-          tar -xjf i686-godot-linux-gnu_sdk-buildroot.tar.bz2
-          mv i686-godot-linux-gnu_sdk-buildroot buildroot
-          cd buildroot
-          ./relocate-sdk.sh
-          cd ..
+      - name: Setup Linux toolchain
+        if: matrix.opts.platform == 'linux'
+        uses: ./limboai/.github/actions/setup-linux-toolchain
+        with:
+          arch: ${{matrix.opts.arch}}
 
       - name: Set up Python 3.x
         if: matrix.opts.platform == 'windows' || matrix.opts.platform == 'macos'
@@ -251,8 +238,8 @@ jobs:
           name: ${{ env.NAME }}
           path: out/*
 
-  merge-artifacts:
-    name: Merge artifacts
+  package-extension:
+    name: 📦 Package extension
     runs-on: ubuntu-latest
     needs: gdextension
 
@@ -263,3 +250,47 @@ jobs:
           name: ${{needs.gdextension.outputs.name-prefix}}
           pattern: tmp-gdextension.*
           delete-merged: true
+
+      - name: Download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{needs.gdextension.outputs.name-prefix}}
+          path: out/
+
+      - name: Setup Godot
+        shell: bash
+        run: |
+          echo "Downloading Godot ${GODOT_VERSION}"
+          mkdir bin
+          cd bin
+          wget "https://github.com/godotengine/godot/releases/download/${GODOT_VERSION}/Godot_v${GODOT_VERSION}_linux.x86_64.zip" -O godot.zip
+          unzip godot.zip
+          rm godot.zip
+          mv Godot_* godot
+          chmod u+x godot
+          ls -l
+          cd ..
+          ./bin/godot --version
+
+      - name: Generate icon .import files
+        shell: bash
+        run: |
+          touch out/project.godot
+          timeout 20s ./bin/godot --headless --editor --path ./out/ || /bin/true
+          rm out/project.godot
+          rm -rf out/.godot/
+
+      - name: Change editor scale import settings
+        shell: bash
+        run: |
+          echo "--- Listing icons dir:"
+          ls out/addons/limboai/icons/
+          echo "--- (end of listing)"
+          sed -i 's|editor/scale_with_editor_scale=false|editor/scale_with_editor_scale=true|' out/addons/limboai/icons/*.import
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{needs.gdextension.outputs.name-prefix}}
+          path: out/*
+          overwrite: true
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 056e8242..bdfbfa39 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -139,27 +139,10 @@ jobs:
       # Inits GODOT_VERSION, LIMBOAI_VERSION and NAME_PREFIX environment variables.
       - uses: ./modules/limboai/.github/actions/init-version
 
-      # About sed see: https://github.com/godotengine/buildroot/issues/6
-      - name: Set up buildroot x86_64
-        if: matrix.opts.arch == 'x86_64'
-        run: |
-          wget https://download.tuxfamily.org/godotengine/toolchains/linux/x86_64-godot-linux-gnu_sdk-buildroot.tar.bz2
-          tar -xjf x86_64-godot-linux-gnu_sdk-buildroot.tar.bz2
-          mv x86_64-godot-linux-gnu_sdk-buildroot buildroot
-          cd buildroot
-          sed -i x86_64-godot-linux-gnu/sysroot/usr/lib/pkgconfig/dbus-1.pc -e "s@/lib@/lib64@g"
-          ./relocate-sdk.sh
-          cd ..
-
-      - name: Set up buildroot x86_32
-        if: matrix.opts.arch == 'x86_32'
-        run: |
-          wget https://download.tuxfamily.org/godotengine/toolchains/linux/i686-godot-linux-gnu_sdk-buildroot.tar.bz2
-          tar -xjf i686-godot-linux-gnu_sdk-buildroot.tar.bz2
-          mv i686-godot-linux-gnu_sdk-buildroot buildroot
-          cd buildroot
-          ./relocate-sdk.sh
-          cd ..
+      - name: Set up Linux toolchain
+        uses: ./modules/limboai/.github/actions/setup-linux-toolchain
+        with:
+          arch: ${{matrix.opts.arch}}
 
       - name: Set up scons cache
         uses: actions/cache@v4
diff --git a/.github/workflows/test_builds.yml b/.github/workflows/test_builds.yml
index 4a961abc..f79e4404 100644
--- a/.github/workflows/test_builds.yml
+++ b/.github/workflows/test_builds.yml
@@ -52,16 +52,10 @@ jobs:
         with:
           path: modules/limboai
 
-      # About sed see: https://github.com/godotengine/buildroot/issues/6
-      - name: Set up buildroot x86_64
-        run: |
-          wget https://download.tuxfamily.org/godotengine/toolchains/linux/x86_64-godot-linux-gnu_sdk-buildroot.tar.bz2
-          tar -xjf x86_64-godot-linux-gnu_sdk-buildroot.tar.bz2
-          mv x86_64-godot-linux-gnu_sdk-buildroot buildroot
-          cd buildroot
-          sed -i x86_64-godot-linux-gnu/sysroot/usr/lib/pkgconfig/dbus-1.pc -e "s@/lib@/lib64@g"
-          ./relocate-sdk.sh
-          cd ..
+      - name: Set up Linux toolchain
+        uses: ./modules/limboai/.github/actions/setup-linux-toolchain
+        with:
+          arch: x86_64
 
       - name: Set up scons cache
         uses: actions/cache@v4