From 53c0512d3d0e87c1d6c0a10fd97e0da7c602b799 Mon Sep 17 00:00:00 2001
From: Tun Loakthar <thein.loakthar@exasol.com>
Date: Wed, 26 Feb 2025 15:12:50 +0000
Subject: [PATCH 01/29] Add security.md file

---
 SECURITY.md | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 SECURITY.md

diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000..0e535ac
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,26 @@
+# Security
+
+If you believe you have found a new security vulnerability in this repository, please report it to us as follows.
+
+## Reporting Security Issues
+
+* Please do **not** report security vulnerabilities through public GitHub issues.
+
+* Please create a draft security advisory on the Github page: the reporting form is under `> Security > Advisories`. The URL is https://github.com/exasol/virtual-schema-common-lua/security/advisories/new.
+
+* If you prefer to email, please send your report to `infosec@exasol.com`.
+
+## Guidelines 
+
+* When reporting a vulnerability, please include as much information as possible, including the complete steps to reproduce the issue. 
+
+* Avoid sending us executables.
+
+* Feel free to include any script you wrote and used but avoid sending us scripts that download and run binaries. 
+
+* We will prioritise reports that show how the exploits work in realistic environments. 
+
+* We prefer all communications to be in English. 
+
+* We do not offer financial rewards. We are happy to acknowledge your research publicly when possible. 
+

From c304f08c5a6e8af231e429d1b9f7624feb76cdcd Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Wed, 12 Aug 2026 13:55:55 +0200
Subject: [PATCH 02/29] Updated workflows.

---
 .github/workflows/broken_links_checker.yml | 52 ++++++++++++++++------
 .github/workflows/ci-build.yml             | 14 +++---
 .github/workflows/publish-api-doc.yml      |  8 ++--
 3 files changed, 50 insertions(+), 24 deletions(-)

diff --git a/.github/workflows/broken_links_checker.yml b/.github/workflows/broken_links_checker.yml
index 6dd91fa..55d839d 100644
--- a/.github/workflows/broken_links_checker.yml
+++ b/.github/workflows/broken_links_checker.yml
@@ -1,19 +1,45 @@
+# This file was generated by Project Keeper.
 name: Broken Links Checker
-
 on:
   schedule:
-    - cron: "0 5 * * *"
-  push:
-    branches:
-      - main
-  pull_request:
-
+    - {
+      cron: 0 5 * * 0
+    }
+  workflow_dispatch: null
 jobs:
   linkChecker:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
+    permissions: {
+      contents: read
+    }
+    defaults:
+      run: {
+        shell: bash
+      }
+    concurrency: {
+      group: '${{ github.workflow }}-${{ github.ref }}',
+      cancel-in-progress: true
+    }
     steps:
-      - uses: actions/checkout@v4
-      - uses: gaurav-nelson/github-action-markdown-link-check@v1
-        with:
-          use-quiet-mode: "yes"
-          use-verbose-mode: "yes"
+      - id: checkout
+        uses: actions/checkout@v7
+        with: {
+          persist-credentials: false
+        }
+      - id: configure-broken-links-checker
+        name: Configure broken links checker
+        run: |
+          mkdir -p ./target
+          echo '{"aliveStatusCodes": [429, 200], "ignorePatterns": [' \
+          '{"pattern": "^https?://(www|dev).mysql.com/"},' \
+          '{"pattern": "^https?://(www.)?opensource.org"}' \
+          '{"pattern": "^https?://(www.)?eclipse.org"}' \
+          '{"pattern": "^https?://projects.eclipse.org"}' \
+          ']}' > ./target/broken_links_checker.json
+      - id: run-broken-links-checker
+        uses: tcort/github-action-markdown-link-check@e7c7a18363c842693fadde5d41a3bd3573a7a225
+        with: {
+          use-quiet-mode: yes,
+          use-verbose-mode: yes,
+          config-file: ./target/broken_links_checker.json
+        }
diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 62ab916..691ef06 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -15,20 +15,20 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Install Lua ${{ matrix.lua_version }}
-        uses: leafo/gh-actions-lua@v10
+        uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: ${{ matrix.lua_version }}
       - name: Install LuaRocks
-        uses: leafo/gh-actions-luarocks@v4
+        uses: leafo/gh-actions-luarocks@v6
         with:
-          luaRocksVersion: "3.11.1"
+          luaRocksVersion: "3.13.0"
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.luarocks
           key: |
@@ -47,14 +47,14 @@ jobs:
       - name: Run shellcheck
         run: tools/shellcheck.sh
       - name: Archive code coverage results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: luacov-report
           path: target/luacov-reports/*
       - name: Build API documentation
         run: tools/build_docs.sh
       - name: Upload API documentation
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: api-documentation
           path: target/luals-doc/
diff --git a/.github/workflows/publish-api-doc.yml b/.github/workflows/publish-api-doc.yml
index 702d08f..cfed165 100644
--- a/.github/workflows/publish-api-doc.yml
+++ b/.github/workflows/publish-api-doc.yml
@@ -13,17 +13,17 @@ jobs:
       cancel-in-progress: true
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Install Lua
-        uses: leafo/gh-actions-lua@v10
+        uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: 5.4
 
       - name: Install LuaRocks
-        uses: leafo/gh-actions-luarocks@v4
+        uses: leafo/gh-actions-luarocks@v6
         with:
-          luaRocksVersion: "3.11.1"
+          luaRocksVersion: "3.13.0"
 
       - name: Generate API documentation
         run: |

From eb960841c57d73bb619bb66bf6463cda4f165eea Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Wed, 12 Aug 2026 13:56:25 +0200
Subject: [PATCH 03/29] Added .idea to .gitignore.

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 32c0f62..edb38db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@ Scripts
 .idea/workspace.xml
 .idea/misc.xml
 virtual-schema-common-lua-*.src.rock
+/.idea/

From bb53f7d94414d0b9cc48cfc927a6f214e0722663 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Wed, 12 Aug 2026 14:05:49 +0200
Subject: [PATCH 04/29] Updated Lua rocks.

---
 doc/changes/changelog.md                            |  1 +
 doc/changes/changes_5.0.1.md                        | 13 +++++++++++++
 ...ec => virtual-schema-common-lua-5.0.1-1.rockspec |  8 ++++----
 3 files changed, 18 insertions(+), 4 deletions(-)
 create mode 100644 doc/changes/changes_5.0.1.md
 rename virtual-schema-common-lua-5.0.0-1.rockspec => virtual-schema-common-lua-5.0.1-1.rockspec (93%)

diff --git a/doc/changes/changelog.md b/doc/changes/changelog.md
index 795e374..ec58d2b 100644
--- a/doc/changes/changelog.md
+++ b/doc/changes/changelog.md
@@ -1,5 +1,6 @@
 # Changes
 
+* [5.0.1](changes_5.0.1.md)
 * [5.0.0](changes_5.0.0.md)
 * [4.0.1](changes_4.0.1.md)
 * [4.0.0](changes_4.0.0.md)
diff --git a/doc/changes/changes_5.0.1.md b/doc/changes/changes_5.0.1.md
new file mode 100644
index 0000000..5926856
--- /dev/null
+++ b/doc/changes/changes_5.0.1.md
@@ -0,0 +1,13 @@
+# virtual-schema-common-lua 5.0.1, released 2026-08-12
+
+Code name: Update LuaRocks dependencies
+
+## Summary
+
+This release updates the LuaRocks dependencies used for JSON handling, testing and code coverage.
+
+## Dependency Updates
+
+* `lua-cjson` 2.1.0.10
+* `busted` 2.3.0
+* `luacov` 0.17.0
diff --git a/virtual-schema-common-lua-5.0.0-1.rockspec b/virtual-schema-common-lua-5.0.1-1.rockspec
similarity index 93%
rename from virtual-schema-common-lua-5.0.0-1.rockspec
rename to virtual-schema-common-lua-5.0.1-1.rockspec
index 15fe291..b881a9f 100644
--- a/virtual-schema-common-lua-5.0.0-1.rockspec
+++ b/virtual-schema-common-lua-5.0.1-1.rockspec
@@ -1,7 +1,7 @@
 ---@diagnostic disable: lowercase-global
 rockspec_format = "3.0"
 
-local tag = "5.0.0"
+local tag = "5.0.1"
 
 package = "virtual-schema-common-lua"
 version = tag .. "-1"
@@ -25,14 +25,14 @@ description = {
 dependencies = {
     "lua >= 5.4, < 5.5",
     "exaerror >= 2.0.3",
-    "lua-cjson = 2.1.0", -- pinned to prevent "undefined symbol: lua_objlen" in 2.1.0.6 (https://github.com/mpx/lua-cjson/issues/56)
+    "lua-cjson = 2.1.0.10", -- pinned to prevent "undefined symbol: lua_objlen" in 2.1.0.6 (https://github.com/mpx/lua-cjson/issues/56)
     "remotelog >= 1.1.1"
 }
 
 test_dependencies = {
-    "busted >= 2.2.0",
+    "busted >= 2.3.0",
     "luacheck >= 1.2.0",
-    "luacov >= 0.15.0",
+    "luacov >= 0.17.0",
     "luacov-coveralls >= 0.2.3"
 }
 -- LuaFormatter on

From 6c700be9b06586c2d1d9d7d514b25cda6cbfabd6 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Wed, 12 Aug 2026 14:51:01 +0200
Subject: [PATCH 05/29] Changed runner to Ubuntu latest.

---
 .github/workflows/ci-build.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 691ef06..c6254eb 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: true
       matrix:
         lua_version: [5.4]
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v7

From cad116aa3202279360282c0b3591836afa04efcc Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Wed, 12 Aug 2026 15:01:52 +0200
Subject: [PATCH 06/29] Repinned lua-cjson 2.1.0.

---
 virtual-schema-common-lua-5.0.1-1.rockspec | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/virtual-schema-common-lua-5.0.1-1.rockspec b/virtual-schema-common-lua-5.0.1-1.rockspec
index b881a9f..da61a83 100644
--- a/virtual-schema-common-lua-5.0.1-1.rockspec
+++ b/virtual-schema-common-lua-5.0.1-1.rockspec
@@ -25,7 +25,7 @@ description = {
 dependencies = {
     "lua >= 5.4, < 5.5",
     "exaerror >= 2.0.3",
-    "lua-cjson = 2.1.0.10", -- pinned to prevent "undefined symbol: lua_objlen" in 2.1.0.6 (https://github.com/mpx/lua-cjson/issues/56)
+    "lua-cjson = 2.1.0", -- pinned to prevent "undefined symbol: lua_objlen" in 2.1.0.6 (https://github.com/mpx/lua-cjson/issues/56)
     "remotelog >= 1.1.1"
 }
 

From 6c70348cae32aafb6d297dbd0fb1c41d002c0fb3 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 08:06:35 +0200
Subject: [PATCH 07/29] Added zizmor and standard GitHub pages deployment.

---
 .github/workflows/broken_links_checker.yml |  1 -
 .github/workflows/ci-build.yml             | 32 +++++++++++++++++++--
 .github/workflows/publish-api-doc.yml      | 31 ++++++++++++--------
 .github/zizmor.yml                         | 33 ++++++++++++++++++++++
 4 files changed, 81 insertions(+), 16 deletions(-)
 create mode 100644 .github/zizmor.yml

diff --git a/.github/workflows/broken_links_checker.yml b/.github/workflows/broken_links_checker.yml
index 55d839d..3a22ce1 100644
--- a/.github/workflows/broken_links_checker.yml
+++ b/.github/workflows/broken_links_checker.yml
@@ -1,4 +1,3 @@
-# This file was generated by Project Keeper.
 name: Broken Links Checker
 on:
   schedule:
diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index c6254eb..85f8b45 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -7,6 +7,34 @@ on:
   pull_request:
 
 jobs:
+  lint-github-actions:
+    runs-on: ubuntu-latest
+    defaults:
+      run: {
+        shell: bash
+      }
+    permissions: {
+      security-events: write,
+      contents: read,
+      actions: read
+    }
+    concurrency: {
+      group: '${{ github.workflow }}-github-actions-linter-${{ github.ref }}',
+      cancel-in-progress: true
+    }
+    steps:
+      - name: Checkout the repository
+        id: checkout
+        uses: actions/checkout@v7
+        with: {
+          persist-credentials: false
+        }
+      - name: Lint GitHub actions with Zizmore
+        id: lint-github-actions
+        uses: zizmorcore/zizmor-action@192e21d79ab29983730a13d1382995c2307fbcaa
+        with: {
+          advanced-security: false
+        }
   build:
     strategy:
       fail-fast: true
@@ -63,8 +91,6 @@ jobs:
   ## This is a separate job because it requires running apt-get which takes > 40s.
   ## When the other job also uses apt-get this can be moved back.
   plantuml:
-    strategy:
-      fail-fast: true
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
       cancel-in-progress: true
@@ -72,7 +98,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 1
       - name: Install Plantuml
diff --git a/.github/workflows/publish-api-doc.yml b/.github/workflows/publish-api-doc.yml
index cfed165..dbfeeea 100644
--- a/.github/workflows/publish-api-doc.yml
+++ b/.github/workflows/publish-api-doc.yml
@@ -14,27 +14,34 @@ jobs:
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v7
-
       - name: Install Lua
         uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: 5.4
-
       - name: Install LuaRocks
         uses: leafo/gh-actions-luarocks@v6
         with:
           luaRocksVersion: "3.13.0"
-
       - name: Generate API documentation
         run: |
           ./tools/build_docs.sh
-
-      - name: Deploy
-        uses: JamesIves/github-pages-deploy-action@v4
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v5
         with:
-          branch: gh-pages
-          folder: target/luals-doc
-          target-folder: api
-          clean: true
-          single-commit: true
-          force: true
+          path: ./target/luals-doc
+
+  deploy:
+    if: ${{ github.ref == 'refs/heads/main' }}
+    permissions:
+      contents: read
+      id-token: write
+      pages: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v5
diff --git a/.github/zizmor.yml b/.github/zizmor.yml
new file mode 100644
index 0000000..a8508a1
--- /dev/null
+++ b/.github/zizmor.yml
@@ -0,0 +1,33 @@
+# Generated by Project Keeper
+# https://github.com/exasol/project-keeper/blob/main/project-keeper/src/main/resources/templates/.github/zizmor.yml
+# See https://docs.zizmor.sh/configuration/#settings
+rules:
+  unpinned-uses:
+    config:
+      policies:
+        "actions/*": ref-pin
+        "exasol/python-toolbox/.github/actions/security-issues": ref-pin
+        "*": hash-pin
+  cache-poisoning:
+    ignore:
+      # Enabling caching is OK for non-release workflows
+      - ci-build.yml
+      - ci-build-native-build.yml
+      - ci-build-db-version-matrix.yml
+      - project-keeper-verify.yml
+      - test_on_windows.yml
+      - test_linux_build_on_windows.yml
+  obfuscation:
+    ignore:
+      # Generated workflows use boolean conditions like ${{ false }}
+      # Note: We cannot exclude this using inline comments because GitHubWorkflowIO does not preserve comments in the workflow YAML files.
+      - ci-build.yml
+      - release.yml
+      - project-keeper-verify.yml
+  secrets-inherit:
+    ignore:
+      # Required for passing slack webhooks
+      - ci-build.yml
+      - ci-build-db-version-matrix.yml
+      - dependencies_check.yml
+      - release.yml

From a4e5fdbfd1a08e60c029ab5d8103aefa41862226 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 13:21:08 +0200
Subject: [PATCH 08/29] Removed superfluous obfuscation section.

---
 .github/zizmor.yml | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/.github/zizmor.yml b/.github/zizmor.yml
index a8508a1..8454126 100644
--- a/.github/zizmor.yml
+++ b/.github/zizmor.yml
@@ -1,5 +1,3 @@
-# Generated by Project Keeper
-# https://github.com/exasol/project-keeper/blob/main/project-keeper/src/main/resources/templates/.github/zizmor.yml
 # See https://docs.zizmor.sh/configuration/#settings
 rules:
   unpinned-uses:
@@ -17,17 +15,3 @@ rules:
       - project-keeper-verify.yml
       - test_on_windows.yml
       - test_linux_build_on_windows.yml
-  obfuscation:
-    ignore:
-      # Generated workflows use boolean conditions like ${{ false }}
-      # Note: We cannot exclude this using inline comments because GitHubWorkflowIO does not preserve comments in the workflow YAML files.
-      - ci-build.yml
-      - release.yml
-      - project-keeper-verify.yml
-  secrets-inherit:
-    ignore:
-      # Required for passing slack webhooks
-      - ci-build.yml
-      - ci-build-db-version-matrix.yml
-      - dependencies_check.yml
-      - release.yml

From dd590bcd2775ad731d365e67e15bd010e890e14c Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 13:49:04 +0200
Subject: [PATCH 09/29] Install Lua and LuaRocks via APT.

---
 .github/workflows/ci-build.yml        | 40 ++++++++++-----------------
 .github/workflows/publish-api-doc.yml | 13 ++++-----
 2 files changed, 20 insertions(+), 33 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 85f8b45..3539b83 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -9,61 +9,48 @@ on:
 jobs:
   lint-github-actions:
     runs-on: ubuntu-latest
-    defaults:
-      run: {
-        shell: bash
-      }
     permissions: {
       security-events: write,
       contents: read,
       actions: read
     }
-    concurrency: {
+    defaults:
+      run:
+        shell: bash
+    concurrency:
       group: '${{ github.workflow }}-github-actions-linter-${{ github.ref }}',
       cancel-in-progress: true
-    }
     steps:
       - name: Checkout the repository
         id: checkout
         uses: actions/checkout@v7
-        with: {
+        with:
           persist-credentials: false
-        }
       - name: Lint GitHub actions with Zizmore
         id: lint-github-actions
         uses: zizmorcore/zizmor-action@192e21d79ab29983730a13d1382995c2307fbcaa
-        with: {
+        with:
           advanced-security: false
-        }
+
   build:
-    strategy:
-      fail-fast: true
-      matrix:
-        lua_version: [5.4]
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v7
         with:
           fetch-depth: 0
-      - name: Install Lua ${{ matrix.lua_version }}
-        uses: leafo/gh-actions-lua@v13
-        with:
-          luaVersion: ${{ matrix.lua_version }}
-      - name: Install LuaRocks
-        uses: leafo/gh-actions-luarocks@v6
-        with:
-          luaRocksVersion: "3.13.0"
+          persist-credentials: false
+      - name: Install Lua and LuaRocks
+        run: apt install lua luarocks
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
         uses: actions/cache@v6
         with:
           path: ~/.luarocks
           key: |
-            ${{ runner.os }}-lua-${{ matrix.lua_version }}-${{ hashFiles('*.rockspec') }}
-          restore-keys: |
-            "${{ runner.os }}-lua-${{ matrix.lua_version }}"
-            "${{ runner.os }}-lua"
+            ${{ runner.os }}-lua-${{ hashFiles('*.rockspec') }}
       - name: Install Lua dependencies
         run: luarocks make --local
       - name: Run tests
@@ -101,6 +88,7 @@ jobs:
         uses: actions/checkout@v7
         with:
           fetch-depth: 1
+          persist-credentials: false
       - name: Install Plantuml
         run: |
           sudo apt-get update -y
diff --git a/.github/workflows/publish-api-doc.yml b/.github/workflows/publish-api-doc.yml
index dbfeeea..9dab835 100644
--- a/.github/workflows/publish-api-doc.yml
+++ b/.github/workflows/publish-api-doc.yml
@@ -4,9 +4,12 @@ on:
   push:
     branches:
       - main
+  pull_request:
 
 jobs:
   build:
+    permissions:
+      contents: read
     runs-on: ubuntu-latest
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
@@ -14,14 +17,10 @@ jobs:
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v7
-      - name: Install Lua
-        uses: leafo/gh-actions-lua@v13
-        with:
-          luaVersion: 5.4
-      - name: Install LuaRocks
-        uses: leafo/gh-actions-luarocks@v6
         with:
-          luaRocksVersion: "3.13.0"
+          persist-credentials: false
+      - name: Install Lua and LuaRocks
+        run: apt install lua luarocks
       - name: Generate API documentation
         run: |
           ./tools/build_docs.sh

From 5633d75788774715e40611450ca051552a8b2ffe Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 13:53:32 +0200
Subject: [PATCH 10/29] Use `apt-get` instead of `apt`.

---
 .github/workflows/ci-build.yml        | 2 +-
 .github/workflows/publish-api-doc.yml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 3539b83..2ff6be2 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -43,7 +43,7 @@ jobs:
           fetch-depth: 0
           persist-credentials: false
       - name: Install Lua and LuaRocks
-        run: apt install lua luarocks
+        run: sudo apt-get install lua luarocks
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
         uses: actions/cache@v6
diff --git a/.github/workflows/publish-api-doc.yml b/.github/workflows/publish-api-doc.yml
index 9dab835..ddecb8c 100644
--- a/.github/workflows/publish-api-doc.yml
+++ b/.github/workflows/publish-api-doc.yml
@@ -20,7 +20,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install Lua and LuaRocks
-        run: apt install lua luarocks
+        run: sudo apt-get install lua luarocks
       - name: Generate API documentation
         run: |
           ./tools/build_docs.sh

From be8e4a36b588aab51e9980ce6b93646f13f2ad9f Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 13:56:03 +0200
Subject: [PATCH 11/29] Use `lua5.4` instead of `lua`.

---
 .github/workflows/ci-build.yml        | 2 +-
 .github/workflows/publish-api-doc.yml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 2ff6be2..22f6bb0 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -43,7 +43,7 @@ jobs:
           fetch-depth: 0
           persist-credentials: false
       - name: Install Lua and LuaRocks
-        run: sudo apt-get install lua luarocks
+        run: sudo apt-get install lua5.4 luarocks
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
         uses: actions/cache@v6
diff --git a/.github/workflows/publish-api-doc.yml b/.github/workflows/publish-api-doc.yml
index ddecb8c..7b8dffd 100644
--- a/.github/workflows/publish-api-doc.yml
+++ b/.github/workflows/publish-api-doc.yml
@@ -20,7 +20,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install Lua and LuaRocks
-        run: sudo apt-get install lua luarocks
+        run: sudo apt-get install lua5.4 luarocks
       - name: Generate API documentation
         run: |
           ./tools/build_docs.sh

From c7edc5f7b59520e31ccbfc3e4665cdbf1fb5739b Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 14:01:04 +0200
Subject: [PATCH 12/29] Fixed workflow syntax.

---
 .github/workflows/ci-build.yml | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 22f6bb0..9d254b1 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -9,16 +9,15 @@ on:
 jobs:
   lint-github-actions:
     runs-on: ubuntu-latest
-    permissions: {
-      security-events: write,
-      contents: read,
+    permissions:
+      security-events: write
+      contents: read
       actions: read
-    }
     defaults:
       run:
         shell: bash
     concurrency:
-      group: '${{ github.workflow }}-github-actions-linter-${{ github.ref }}',
+      group: '${{ github.workflow }}-github-actions-linter-${{ github.ref }}'
       cancel-in-progress: true
     steps:
       - name: Checkout the repository

From 9c8a30d96b68532736c48f6b804a02f64a728fe8 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 14:08:07 +0200
Subject: [PATCH 13/29] Luarocks set to Lua 5.4 explicitly.

---
 .github/workflows/ci-build.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 9d254b1..9489f76 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -51,7 +51,7 @@ jobs:
           key: |
             ${{ runner.os }}-lua-${{ hashFiles('*.rockspec') }}
       - name: Install Lua dependencies
-        run: luarocks make --local
+        run: luarocks make --local --lua-version=5.4
       - name: Run tests
         run: tools/run_tests.sh --run=ci
       - name: Run static code analysis

From 00922f936dc533e8feee1f9eb04576412b349fc3 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 14:10:43 +0200
Subject: [PATCH 14/29] Added `liblua5.4-dev`.

---
 .github/workflows/ci-build.yml        | 2 +-
 .github/workflows/publish-api-doc.yml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 9489f76..9651ca2 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -42,7 +42,7 @@ jobs:
           fetch-depth: 0
           persist-credentials: false
       - name: Install Lua and LuaRocks
-        run: sudo apt-get install lua5.4 luarocks
+        run: sudo apt-get install lua5.4 liblua5.4-dev luarocks
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
         uses: actions/cache@v6
diff --git a/.github/workflows/publish-api-doc.yml b/.github/workflows/publish-api-doc.yml
index 7b8dffd..0566f11 100644
--- a/.github/workflows/publish-api-doc.yml
+++ b/.github/workflows/publish-api-doc.yml
@@ -20,7 +20,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install Lua and LuaRocks
-        run: sudo apt-get install lua5.4 luarocks
+        run: sudo apt-get install lua5.4 liblua5.4-dev luarocks
       - name: Generate API documentation
         run: |
           ./tools/build_docs.sh

From 61e0bc5553ab26d973ffa9b735ab11baf014b394 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 14:22:55 +0200
Subject: [PATCH 15/29] Global Luarocks config.

---
 .github/luarocks-config-5.4.lua | 2 ++
 .github/workflows/ci-build.yml  | 6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)
 create mode 100644 .github/luarocks-config-5.4.lua

diff --git a/.github/luarocks-config-5.4.lua b/.github/luarocks-config-5.4.lua
new file mode 100644
index 0000000..b73e22b
--- /dev/null
+++ b/.github/luarocks-config-5.4.lua
@@ -0,0 +1,2 @@
+lua_version = "5.4"
+lua_interpreter = "lua5.4"
diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 9651ca2..ea3455b 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -33,6 +33,8 @@ jobs:
 
   build:
     runs-on: ubuntu-latest
+    env:
+      LUAROCKS_CONFIG: ${{ github.workspace }}/.github/luarocks-config-5.4.lua
     permissions:
       contents: read
     steps:
@@ -49,9 +51,9 @@ jobs:
         with:
           path: ~/.luarocks
           key: |
-            ${{ runner.os }}-lua-${{ hashFiles('*.rockspec') }}
+            ${{ runner.os }}-lua-5.4-${{ hashFiles('*.rockspec') }}
       - name: Install Lua dependencies
-        run: luarocks make --local --lua-version=5.4
+        run: luarocks make --local
       - name: Run tests
         run: tools/run_tests.sh --run=ci
       - name: Run static code analysis

From 89283f859132854b351a1e04f8f8997cb18bff29 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 14:28:20 +0200
Subject: [PATCH 16/29] Set `luarocks config lua_version 5.4` on the CLI.

---
 .github/workflows/ci-build.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index ea3455b..93f3f18 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -33,8 +33,6 @@ jobs:
 
   build:
     runs-on: ubuntu-latest
-    env:
-      LUAROCKS_CONFIG: ${{ github.workspace }}/.github/luarocks-config-5.4.lua
     permissions:
       contents: read
     steps:
@@ -44,7 +42,9 @@ jobs:
           fetch-depth: 0
           persist-credentials: false
       - name: Install Lua and LuaRocks
-        run: sudo apt-get install lua5.4 liblua5.4-dev luarocks
+        run: |
+          sudo apt-get install lua5.4 liblua5.4-dev luarocks
+          luarocks config lua_version 5.4
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
         uses: actions/cache@v6

From 5d80cb9cab4d5399a95ba555a2f3d00391ddaa3e Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:02:37 +0200
Subject: [PATCH 17/29] Tried `update-alternatives`.

---
 .github/workflows/ci-build.yml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 93f3f18..69237c3 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -44,7 +44,10 @@ jobs:
       - name: Install Lua and LuaRocks
         run: |
           sudo apt-get install lua5.4 liblua5.4-dev luarocks
-          luarocks config lua_version 5.4
+          sudo update-alternatives --install /usr/bin/lua lua-interpreter /usr/bin/lua5.4 54
+          sudo update-alternatives --install /usr/bin/luac lua-compiler /usr/bin/luac5.4 54
+          sudo update-alternatives --set lua-interpreter /usr/bin/lua5.4
+          sudo update-alternatives --set lua-compiler /usr/bin/luac5.4
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
         uses: actions/cache@v6

From 5f3dd7397383c451a19e26b6fa2e93c4f63ae2ef Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:11:39 +0200
Subject: [PATCH 18/29] Explicitly removed Lua 5.1.

---
 .github/workflows/ci-build.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 69237c3..96930b1 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -44,6 +44,7 @@ jobs:
       - name: Install Lua and LuaRocks
         run: |
           sudo apt-get install lua5.4 liblua5.4-dev luarocks
+          sudo apt-get remove lua5.1
           sudo update-alternatives --install /usr/bin/lua lua-interpreter /usr/bin/lua5.4 54
           sudo update-alternatives --install /usr/bin/luac lua-compiler /usr/bin/luac5.4 54
           sudo update-alternatives --set lua-interpreter /usr/bin/lua5.4

From fcffce439d778dadd4edd2698252754e9dfbb562 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:15:25 +0200
Subject: [PATCH 19/29] Set LUA_INCDIR

---
 .github/workflows/ci-build.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 96930b1..a87960b 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -33,6 +33,8 @@ jobs:
 
   build:
     runs-on: ubuntu-latest
+    env:
+      LUA_INCDIR: /usr/include/lua5.4
     permissions:
       contents: read
     steps:

From 178f458b33e3693b51812ba55a9d711b54e2262d Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:21:19 +0200
Subject: [PATCH 20/29] Set Lua version in Luarocks.

---
 .github/workflows/ci-build.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index a87960b..e0bef82 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -59,7 +59,7 @@ jobs:
           key: |
             ${{ runner.os }}-lua-5.4-${{ hashFiles('*.rockspec') }}
       - name: Install Lua dependencies
-        run: luarocks make --local
+        run: luarocks make --local --lua-version 5.4
       - name: Run tests
         run: tools/run_tests.sh --run=ci
       - name: Run static code analysis

From fcb0fbe00d9d76b9f3e4902bcc006aa9077b5eb7 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:32:47 +0200
Subject: [PATCH 21/29] Set Luarocks lua_version and lua_dir in scope user.

---
 .github/workflows/ci-build.yml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index e0bef82..2db4ffd 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -33,8 +33,6 @@ jobs:
 
   build:
     runs-on: ubuntu-latest
-    env:
-      LUA_INCDIR: /usr/include/lua5.4
     permissions:
       contents: read
     steps:
@@ -51,6 +49,11 @@ jobs:
           sudo update-alternatives --install /usr/bin/luac lua-compiler /usr/bin/luac5.4 54
           sudo update-alternatives --set lua-interpreter /usr/bin/lua5.4
           sudo update-alternatives --set lua-compiler /usr/bin/luac5.4
+          luarocks config --scope user lua_version 5.4
+          luarocks config --scope user lua_dir /usr
+          test "$(lua -e 'print(_VERSION)')" = "Lua 5.4"
+          test "$(luarocks config lua_version)" = "5.4"
+          test "$(luarocks config variables.LUA_INCDIR)" = "/usr/include/lua5.4"
       - name: Cache Lua dependencies
         id: cache-lua-dependencies
         uses: actions/cache@v6

From c06333592bf8c4f806751cc8f15f9e69ec25b525 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:37:41 +0200
Subject: [PATCH 22/29] Restore cache before Luarocks config.

---
 .github/workflows/ci-build.yml | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 2db4ffd..f1429e8 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -41,6 +41,14 @@ jobs:
         with:
           fetch-depth: 0
           persist-credentials: false
+      - name: Cache Lua dependencies
+        # Important: Restore cache before Lua / Luarocks config!
+        id: cache-lua-dependencies
+        uses: actions/cache@v6
+        with:
+          path: ~/.luarocks
+          key: |
+            ${{ runner.os }}-lua-5.4-v2-${{ hashFiles('*.rockspec') }}
       - name: Install Lua and LuaRocks
         run: |
           sudo apt-get install lua5.4 liblua5.4-dev luarocks
@@ -54,13 +62,6 @@ jobs:
           test "$(lua -e 'print(_VERSION)')" = "Lua 5.4"
           test "$(luarocks config lua_version)" = "5.4"
           test "$(luarocks config variables.LUA_INCDIR)" = "/usr/include/lua5.4"
-      - name: Cache Lua dependencies
-        id: cache-lua-dependencies
-        uses: actions/cache@v6
-        with:
-          path: ~/.luarocks
-          key: |
-            ${{ runner.os }}-lua-5.4-${{ hashFiles('*.rockspec') }}
       - name: Install Lua dependencies
         run: luarocks make --local --lua-version 5.4
       - name: Run tests

From 3bda4496b713d97d34352627dd5975780d905243 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:48:12 +0200
Subject: [PATCH 23/29] Restore only the rocks, not Luarocks infra.

---
 .github/workflows/ci-build.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index f1429e8..652c5eb 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -46,9 +46,9 @@ jobs:
         id: cache-lua-dependencies
         uses: actions/cache@v6
         with:
-          path: ~/.luarocks
+          path: ~/.cache/luarocks
           key: |
-            ${{ runner.os }}-lua-5.4-v2-${{ hashFiles('*.rockspec') }}
+            ${{ runner.os }}-lua-5.4-v3-${{ hashFiles('*.rockspec') }}
       - name: Install Lua and LuaRocks
         run: |
           sudo apt-get install lua5.4 liblua5.4-dev luarocks

From d84df119a38ed5ea6528a3e42873bedf79085f01 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:50:56 +0200
Subject: [PATCH 24/29] Removed cache for rocks.

---
 .github/workflows/ci-build.yml | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 652c5eb..65b9696 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -41,14 +41,6 @@ jobs:
         with:
           fetch-depth: 0
           persist-credentials: false
-      - name: Cache Lua dependencies
-        # Important: Restore cache before Lua / Luarocks config!
-        id: cache-lua-dependencies
-        uses: actions/cache@v6
-        with:
-          path: ~/.cache/luarocks
-          key: |
-            ${{ runner.os }}-lua-5.4-v3-${{ hashFiles('*.rockspec') }}
       - name: Install Lua and LuaRocks
         run: |
           sudo apt-get install lua5.4 liblua5.4-dev luarocks

From 1801c7392d838b44a750decbc85a60012eeb84fb Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:57:05 +0200
Subject: [PATCH 25/29] Added luarocks to GITHUB_PATH.

---
 .github/workflows/ci-build.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 65b9696..191fa1f 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -51,6 +51,7 @@ jobs:
           sudo update-alternatives --set lua-compiler /usr/bin/luac5.4
           luarocks config --scope user lua_version 5.4
           luarocks config --scope user lua_dir /usr
+          luarocks config --local deploy_bin_dir >> "$GITHUB_PATH"
           test "$(lua -e 'print(_VERSION)')" = "Lua 5.4"
           test "$(luarocks config lua_version)" = "5.4"
           test "$(luarocks config variables.LUA_INCDIR)" = "/usr/include/lua5.4"

From b385feabcb6b6de8e775cddc7494312fb7b8eeb5 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 15:59:31 +0200
Subject: [PATCH 26/29] Reduced 5.4 setup.

---
 .github/workflows/ci-build.yml | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 191fa1f..0c556cc 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -44,7 +44,6 @@ jobs:
       - name: Install Lua and LuaRocks
         run: |
           sudo apt-get install lua5.4 liblua5.4-dev luarocks
-          sudo apt-get remove lua5.1
           sudo update-alternatives --install /usr/bin/lua lua-interpreter /usr/bin/lua5.4 54
           sudo update-alternatives --install /usr/bin/luac lua-compiler /usr/bin/luac5.4 54
           sudo update-alternatives --set lua-interpreter /usr/bin/lua5.4
@@ -52,9 +51,6 @@ jobs:
           luarocks config --scope user lua_version 5.4
           luarocks config --scope user lua_dir /usr
           luarocks config --local deploy_bin_dir >> "$GITHUB_PATH"
-          test "$(lua -e 'print(_VERSION)')" = "Lua 5.4"
-          test "$(luarocks config lua_version)" = "5.4"
-          test "$(luarocks config variables.LUA_INCDIR)" = "/usr/include/lua5.4"
       - name: Install Lua dependencies
         run: luarocks make --local --lua-version 5.4
       - name: Run tests

From 77150f70535a9034573d266f63db7b3cb1bc9f90 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 16:03:28 +0200
Subject: [PATCH 27/29] PlantUML in the same job.

---
 .github/workflows/ci-build.yml | 27 ++++++---------------------
 1 file changed, 6 insertions(+), 21 deletions(-)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 0c556cc..abb0fee 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -66,6 +66,12 @@ jobs:
         with:
           name: luacov-report
           path: target/luacov-reports/*
+      - name: Install Plantuml
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y plantuml
+      - name: Build diagrams
+        run: tools/build_diagrams.sh
       - name: Build API documentation
         run: tools/build_docs.sh
       - name: Upload API documentation
@@ -74,24 +80,3 @@ jobs:
           name: api-documentation
           path: target/luals-doc/
           if-no-files-found: error
-
-  ## This is a separate job because it requires running apt-get which takes > 40s.
-  ## When the other job also uses apt-get this can be moved back.
-  plantuml:
-    concurrency:
-      group: ${{ github.workflow }}-${{ github.ref }}
-      cancel-in-progress: true
-    name: "Build Plantuml diagrams"
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v7
-        with:
-          fetch-depth: 1
-          persist-credentials: false
-      - name: Install Plantuml
-        run: |
-          sudo apt-get update -y
-          sudo apt-get install -y plantuml
-      - name: Build diagrams
-        run: tools/build_diagrams.sh

From d5c30881ce916f5c9bc1bf65328a750e7b014c3e Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 16:07:59 +0200
Subject: [PATCH 28/29] Reinstate rock cache.

---
 .github/workflows/ci-build.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index abb0fee..ff85052 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -41,6 +41,11 @@ jobs:
         with:
           fetch-depth: 0
           persist-credentials: false
+      - name: Cache downloaded LuaRocks packages
+        uses: actions/cache@v6
+        with:
+          path: ~/.cache/luarocks
+          key: ${{ runner.os }}-luarocks-lua-5.4-${{ hashFiles('*.rockspec') }}
       - name: Install Lua and LuaRocks
         run: |
           sudo apt-get install lua5.4 liblua5.4-dev luarocks

From 57e9c157f281661941d5523812861983adf4ad08 Mon Sep 17 00:00:00 2001
From: redcatbear <sebastian.baer@exasol.com>
Date: Thu, 13 Aug 2026 16:18:02 +0200
Subject: [PATCH 29/29] Removed luarocks-config file.

---
 .github/luarocks-config-5.4.lua | 2 --
 1 file changed, 2 deletions(-)
 delete mode 100644 .github/luarocks-config-5.4.lua

diff --git a/.github/luarocks-config-5.4.lua b/.github/luarocks-config-5.4.lua
deleted file mode 100644
index b73e22b..0000000
--- a/.github/luarocks-config-5.4.lua
+++ /dev/null
@@ -1,2 +0,0 @@
-lua_version = "5.4"
-lua_interpreter = "lua5.4"