diff --git a/.github/actions/install_nim/action.yml b/.github/actions/install_nim/action.yml
new file mode 100644
index 000000000..5d5541a9f
--- /dev/null
+++ b/.github/actions/install_nim/action.yml
@@ -0,0 +1,65 @@
+name: Install Nim
+inputs:
+  os:
+    description: "Operating system to build for"
+    required: true
+  cpu:
+    description: "CPU to build for"
+    default: "amd64"
+  nim_ref:
+    description: "Nim version"
+    default: "v2.2.6"
+  shell:
+    description: "Shell to run commands in"
+    default: "bash --noprofile --norc -e -o pipefail"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Derive environment variables
+      shell: ${{ inputs.shell }}
+      run: |
+        if [[ '${{ inputs.cpu }}' == 'amd64' ]]; then
+          PLATFORM=x64
+        elif [[ '${{ inputs.cpu }}' == 'arm64' ]]; then
+          PLATFORM=arm64
+        else
+          PLATFORM=x86
+        fi
+        echo "PLATFORM=$PLATFORM" >> $GITHUB_ENV
+
+        ncpu=
+        MAKE_CMD="make"
+        case '${{ inputs.os }}' in
+        'Linux')
+          ncpu=$(nproc)
+          ;;
+        'macOS')
+          ncpu=$(sysctl -n hw.ncpu)
+          ;;
+        'Windows')
+          ncpu=$NUMBER_OF_PROCESSORS
+          MAKE_CMD="mingw32-make"
+          ;;
+        esac
+        [[ -z "$ncpu" || $ncpu -le 0 ]] && ncpu=1
+        echo "ncpu=$ncpu" >> $GITHUB_ENV
+        echo "MAKE_CMD=${MAKE_CMD}" >> $GITHUB_ENV
+        echo '${{ github.workspace }}/nim/bin' >> $GITHUB_PATH
+
+    - name: Restore Nim from cache
+      id: nim-cache
+      uses: actions/cache@v4
+      with:
+        path: '${{ github.workspace }}/nim'
+        key: ${{ inputs.os }}-${{ inputs.cpu }}-nim-${{ inputs.nim_ref }}-cache-${{ env.cache_nonce }}
+
+    - name: Build Nim and Nimble
+      shell: ${{ inputs.shell }}
+      if: ${{ steps.nim-cache.outputs.cache-hit != 'true' }}
+      run: |
+        rm -rf nim
+        curl -O -L -s -S https://raw.githubusercontent.com/status-im/nimbus-build-system/master/scripts/build_nim.sh
+        env MAKE="${MAKE_CMD} -j${ncpu}" ARCH_OVERRIDE=${PLATFORM} NIM_COMMIT=${{ inputs.nim_ref }} \
+          QUICK_AND_DIRTY_COMPILER=1 QUICK_AND_DIRTY_NIMBLE=1 CC=gcc \
+          bash build_nim.sh nim csources dist/nimble NimBinaries
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 560073899..3e6389eec 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -127,19 +127,13 @@ jobs:
           sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 14
           sudo update-alternatives --set gcc /usr/bin/gcc-14
 
-      - name: Install Nim (pinned)
-        uses: iffy/install-nim@v5
+      - name: Setup Nim
+        uses: "./.github/actions/install_nim"
         with:
-          version: "2.2.6"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Install Nimble (pinned)
-        if: runner.os != 'Windows'
-        uses: nim-lang/setup-nimble-action@v1
-        with:
-          nimble-version: '0.20.1'
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          os: ${{ runner.os }}
+          cpu: ${{ matrix.platform.cpu }}
+          shell: ${{ matrix.shell }}
+          nim_ref: v2.2.6
 
       - name: Platform info
         run: |
@@ -280,19 +274,13 @@ jobs:
           sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 14
           sudo update-alternatives --set gcc /usr/bin/gcc-14
 
-      - name: Install Nim (pinned)
-        uses: iffy/install-nim@v5
+      - name: Setup Nim
+        uses: "./.github/actions/install_nim"
         with:
-          version: "2.2.6"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Install Nimble (pinned)
-        if: runner.os != 'Windows'
-        uses: nim-lang/setup-nimble-action@v1
-        with:
-          nimble-version: '0.20.1'
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          os: ${{ runner.os }}
+          cpu: ${{ matrix.platform.cpu }}
+          shell: ${{ matrix.shell }}
+          nim_ref: v2.2.6
 
       - name: Platform info
         run: |
@@ -392,18 +380,12 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Install Nim (pinned)
-        uses: iffy/install-nim@v5
+      - name: Setup Nim
+        uses: "./.github/actions/install_nim"
         with:
-          version: "2.2.6"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Install Nimble (pinned)
-        uses: nim-lang/setup-nimble-action@v1
-        with:
-          nimble-version: '0.20.1'
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          os: ${{ runner.os }}
+          cpu: amd64
+          nim_ref: v2.2.6
 
       - name: Build nph
         run: |