diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
index ffcae5cf5be55..c59dd673257a1 100644
--- a/.github/workflows/android.yml
+++ b/.github/workflows/android.yml
@@ -8,6 +8,8 @@ on:
       - 'lib/**.cpp'
       - 'src/**.[ch]'
       - 'src/**.cpp'
+      - 'irr/**.[ch]'
+      - 'irr/**.cpp'
       - '**/CMakeLists.txt'
       - 'cmake/Modules/**'
       - 'android/**'
diff --git a/.github/workflows/cpp_lint.yml b/.github/workflows/cpp_lint.yml
index 51c6c8273cbd9..79b8ffc4ef9ef 100644
--- a/.github/workflows/cpp_lint.yml
+++ b/.github/workflows/cpp_lint.yml
@@ -8,6 +8,8 @@ on:
       - 'lib/**.cpp'
       - 'src/**.[ch]'
       - 'src/**.cpp'
+      - 'irr/**.[ch]'
+      - 'irr/**.cpp'
       - '**/CMakeLists.txt'
       - 'cmake/Modules/**'
       - 'util/ci/**'
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index be6c1adbd8f47..9e73c1a368aaa 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -8,6 +8,8 @@ on:
       - 'lib/**.cpp'
       - 'src/**.[ch]'
       - 'src/**.cpp'
+      - 'irr/**.[ch]'
+      - 'irr/**.cpp'
       - '**/CMakeLists.txt'
       - 'cmake/Modules/**'
       - 'util/ci/**'
diff --git a/.github/workflows/lua.yml b/.github/workflows/lua.yml
index ff556908f3972..6f803d1336737 100644
--- a/.github/workflows/lua.yml
+++ b/.github/workflows/lua.yml
@@ -14,24 +14,24 @@ on:
       - '.github/workflows/**.yml'
 
 jobs:
-  # Note that the integration tests are also run build.yml, but only when C++ code is changed.
+  # Note that the integration tests are also run in build.yml, but only when C++ code is changed.
   integration_tests:
     name: "Compile and run multiplayer tests"
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
     - name: Install deps
       run: |
         source ./util/ci/common.sh
-        install_linux_deps clang-10 gdb libluajit-5.1-dev
+        install_linux_deps clang gdb libluajit-5.1-dev
 
     - name: Build
       run: |
         ./util/ci/build.sh
       env:
-        CC: clang-10
-        CXX: clang++-10
-        CMAKE_FLAGS: "-DENABLE_GETTEXT=0 -DBUILD_SERVER=0"
+        CC: clang
+        CXX: clang++
+        CMAKE_FLAGS: "-DENABLE_GETTEXT=0 -DBUILD_SERVER=0 -DBUILD_UNITTESTS=0"
 
     - name: Integration test + devtest
       run: |
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 77df1e3eac208..24c2b9f510517 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -8,6 +8,8 @@ on:
       - 'lib/**.cpp'
       - 'src/**.[ch]'
       - 'src/**.cpp'
+      - 'irr/**.[ch]'
+      - 'irr/**.cpp'
       - '**/CMakeLists.txt'
       - 'cmake/Modules/**'
       - '.github/workflows/macos.yml'
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index e2303ff244e18..061bd704bb7d1 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -8,6 +8,8 @@ on:
       - 'lib/**.cpp'
       - 'src/**.[ch]'
       - 'src/**.cpp'
+      - 'irr/**.[ch]'
+      - 'irr/**.cpp'
       - '**/CMakeLists.txt'
       - 'cmake/Modules/**'
       - 'util/buildbot/**'