diff --git a/.github/scripts/generate_job_matrix.py b/.github/scripts/generate_job_matrix.py
new file mode 100755
index 0000000..a610921
--- /dev/null
+++ b/.github/scripts/generate_job_matrix.py
@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+
+examples = [
+    "counter",
+    "picosoc",
+    "litex",
+    "litex_linux",
+    "button_controller",
+    "pulse_width_led",
+    "timer",
+    "hello-a"
+]
+
+jobs = []
+
+osvers = [
+    ("ubuntu", "xenial"),
+    ("ubuntu", "bionic"),
+    ("ubuntu", "focal"),
+    ("centos", "7"),
+    ("centos", "8"),
+    ("debian", "buster"),
+    ("debian", "bullseye"),
+    ("debian", "sid")
+]
+
+for osver in osvers:
+    jobs += [{
+        'fpga-fam': "xc7",
+        'os': osver[0],
+        'os-version': osver[1],
+        'example': example
+    } for example in examples]
+
+jobs += [{
+    'fpga-fam': "eos-s3",
+    'os': osver[0],
+    'os-version': osver[1],
+    'example': "counter"
+} for osver in osvers]
+
+print('::set-output name=matrix::' + str(jobs))
diff --git a/.github/workflows/sphinx-tuttest.yml b/.github/workflows/sphinx-tuttest.yml
index 9691302..6451517 100644
--- a/.github/workflows/sphinx-tuttest.yml
+++ b/.github/workflows/sphinx-tuttest.yml
@@ -7,92 +7,31 @@ on:
   - cron: "0 0 * * *"
 
 jobs:
-  test:
+
+
+  Matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.generate.outputs.matrix }}
+
+    steps:
+
+      - name: Setup repository
+        uses: actions/checkout@v2
+
+      - name: Generate examples matrix
+        id: generate
+        run: ./.github/scripts/generate_job_matrix.py
+
+
+  Test:
+    needs: Matrix
     runs-on: [self-hosted, Linux, X64]
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - {fpga-fam: "eos-s3", os: "ubuntu", os-version: "xenial",   example: "counter"}
-          - {fpga-fam: "eos-s3", os: "ubuntu", os-version: "bionic",   example: "counter"}
-          - {fpga-fam: "eos-s3", os: "ubuntu", os-version: "focal",    example: "counter"}
-          - {fpga-fam: "eos-s3", os: "centos", os-version: "7",        example: "counter"}
-          - {fpga-fam: "eos-s3", os: "centos", os-version: "8",        example: "counter"}
-          - {fpga-fam: "eos-s3", os: "debian", os-version: "buster",   example: "counter"}
-          - {fpga-fam: "eos-s3", os: "debian", os-version: "bullseye", example: "counter"}
-          - {fpga-fam: "eos-s3", os: "debian", os-version: "sid",      example: "counter"}
+        include: ${{ fromJson(needs.Matrix.outputs.matrix) }}
 
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "counter"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "counter"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "counter"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "counter"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "counter"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "counter"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "counter"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "counter"}
-
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "picosoc"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "picosoc"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "picosoc"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "picosoc"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "picosoc"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "picosoc"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "picosoc"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "picosoc"}
-
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "litex"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "litex"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "litex"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "litex"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "litex"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "litex"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "litex"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "litex"}
-
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "litex_linux"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "litex_linux"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "litex_linux"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "litex_linux"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "litex_linux"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "litex_linux"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "litex_linux"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "litex_linux"}
-  
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "button_controller"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "button_controller"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "button_controller"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "button_controller"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "button_controller"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "button_controller"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "button_controller"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "button_controller"}
-          
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "pulse_width_led"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "pulse_width_led"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "pulse_width_led"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "pulse_width_led"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "pulse_width_led"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "pulse_width_led"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "pulse_width_led"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "pulse_width_led"}
-
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "timer"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "timer"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "timer"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "timer"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "timer"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "timer"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "timer"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "timer"}
-        
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "xenial",   example: "hello-a"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "bionic",   example: "hello-a"}
-          - {fpga-fam: "xc7",    os: "ubuntu", os-version: "focal",    example: "hello-a"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "7",        example: "hello-a"}
-          - {fpga-fam: "xc7",    os: "centos", os-version: "8",        example: "hello-a"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "buster",   example: "hello-a"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "bullseye", example: "hello-a"}
-          - {fpga-fam: "xc7",    os: "debian", os-version: "sid",      example: "hello-a"}
     env:
       LANG: "en_US.UTF-8"
       DEBIAN_FRONTEND: "noninteractive"