diff --git a/.github/actions/setup-build-env/action.yml b/.github/actions/setup-build-env/action.yml
new file mode 100644
index 000000000..e1b550e5c
--- /dev/null
+++ b/.github/actions/setup-build-env/action.yml
@@ -0,0 +1,32 @@
+name: Build environment setup
+description: Configure build env for Yosys builds
+runs:
+  using: composite
+  steps:
+    - name: Install Linux Dependencies
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        sudo apt-get update
+        sudo apt-get install gperf build-essential bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev
+
+    - name: Install macOS Dependencies
+      if: runner.os == 'macOS'
+      run: |
+        brew install bison flex gawk libffi pkg-config bash
+
+    - name: Linux runtime environment
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
+        echo "procs=$(nproc)" >> $GITHUB_ENV
+
+    - name: macOS runtime environment
+      if: runner.os == 'macOS'
+      shell: bash
+      run: |
+        echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
+        echo "$(brew --prefix bison)/bin" >> $GITHUB_PATH
+        echo "$(brew --prefix flex)/bin" >> $GITHUB_PATH
+        echo "procs=$(sysctl -n hw.ncpu)" >> $GITHUB_ENV
\ No newline at end of file
diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index 8ad44f0b5..373228831 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -35,33 +35,8 @@ jobs:
         os: [ubuntu-20.04, macos-13]
       fail-fast: false
     steps:
-      - name: Install Linux Dependencies
-        if: runner.os == 'Linux'
-        shell: bash
-        run: |
-          sudo apt-get update
-          sudo apt-get install gperf build-essential bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev
-
-      - name: Install macOS Dependencies
-        if: runner.os == 'macOS'
-        run: |
-          brew install bison flex gawk libffi pkg-config bash
-
-      - name: Linux runtime environment
-        if: runner.os == 'Linux'
-        shell: bash
-        run: |
-          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
-          echo "procs=$(nproc)" >> $GITHUB_ENV
-
-      - name: macOS runtime environment
-        if: runner.os == 'macOS'
-        shell: bash
-        run: |
-          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix bison)/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix flex)/bin" >> $GITHUB_PATH
-          echo "procs=$(sysctl -n hw.ncpu)" >> $GITHUB_ENV
+      - name: Setup environment
+        uses: ./.github/actions/setup-build-env
 
       - name: Checkout Yosys
         uses: actions/checkout@v4
@@ -105,33 +80,8 @@ jobs:
       matrix:
         os: [ubuntu-20.04, macos-13]
     steps:
-      - name: Install Linux Dependencies
-        if: runner.os == 'Linux'
-        shell: bash
-        run: |
-          sudo apt-get update
-          sudo apt-get install gperf build-essential bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev
-
-      - name: Install macOS Dependencies
-        if: runner.os == 'macOS'
-        run: |
-          brew install bison flex gawk libffi pkg-config bash
-
-      - name: Linux runtime environment
-        if: runner.os == 'Linux'
-        shell: bash
-        run: |
-          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
-          echo "procs=$(nproc)" >> $GITHUB_ENV
-
-      - name: macOS runtime environment
-        if: runner.os == 'macOS'
-        shell: bash
-        run: |
-          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix bison)/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix flex)/bin" >> $GITHUB_PATH
-          echo "procs=$(sysctl -n hw.ncpu)" >> $GITHUB_ENV
+      - name: Setup environment
+        uses: ./.github/actions/setup-build-env
 
       - name: Checkout Yosys
         uses: actions/checkout@v4
diff --git a/.github/workflows/test-compile.yml b/.github/workflows/test-compile.yml
index 9c25874bb..6a0b69c8b 100644
--- a/.github/workflows/test-compile.yml
+++ b/.github/workflows/test-compile.yml
@@ -60,39 +60,14 @@ jobs:
             cpp_std: 'c++11'
       fail-fast: false
     steps:
-      - name: Install Linux Dependencies
-        if: runner.os == 'Linux'
-        shell: bash
-        run: |
-          sudo apt-get update
-          sudo apt-get install gperf build-essential bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev
-
-      - name: Install macOS Dependencies
-        if: runner.os == 'macOS'
-        run: |
-          brew install bison flex gawk libffi pkg-config bash
+      - name: Setup environment
+        uses: ./.github/actions/setup-build-env
 
       - name: Setup Cpp
         uses: aminya/setup-cpp@v1
         with:
           compiler: ${{ matrix.compiler }}
 
-      - name: Linux runtime environment
-        if: runner.os == 'Linux'
-        shell: bash
-        run: |
-          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
-          echo "procs=$(nproc)" >> $GITHUB_ENV
-
-      - name: macOS runtime environment
-        if: runner.os == 'macOS'
-        shell: bash
-        run: |
-          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix bison)/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix flex)/bin" >> $GITHUB_PATH
-          echo "procs=$(sysctl -n hw.ncpu)" >> $GITHUB_ENV
-
       - name: Tool versions
         shell: bash
         run: |