🔥 remove dedicated MLIR option for reusable-change-detection.yml and merge with C++ checks (#300)

* 🔥 remove dedicated MLIR option for reusable-change-detection.yml and merge with C++ checks

Signed-off-by: burgholzer <burgholzer@me.com>

* 📝 add changelog and upgrade guide note

Signed-off-by: burgholzer <burgholzer@me.com>

* 👌 address CodeRabbit concerns

Signed-off-by: burgholzer <burgholzer@me.com>

---------

Signed-off-by: burgholzer <burgholzer@me.com>

Author: burgholzer

.github/workflows/reusable-change-detection.yml

@@ -25,9 +25,6 @@ on:
       run-cd:
         description: Whether to run the continuous deployment job
         value: ${{ jobs.change-detection.outputs.run-cd || false }}
-      run-mlir:
-        description: Whether to run the MLIR tests
-        value: ${{ jobs.change-detection.outputs.run-mlir || false }}
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}-change-detection
@@ -46,7 +43,6 @@ jobs:
       run-cpp-linter: ${{ steps.cpp-linter-changes.outputs.run-cpp-linter || false }}
       run-python-tests: ${{ steps.python-tests-changes.outputs.run-python-tests || false }}
       run-cd: ${{ steps.cd-changes.outputs.run-cd || false }}
-      run-mlir: ${{ steps.mlir-changes.outputs.run-mlir || false }}
     steps:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
@@ -58,6 +54,7 @@ jobs:
         with:
           filter: |
             include/**
+            mlir/**
             src/**
             test/**
             !test/python/**
@@ -85,10 +82,10 @@ jobs:
           filter: |
             bindings/**
             include/**
+            mlir/**
             src/**
             test/**
             !test/python/**
-            mlir/**
             .clang-tidy
             .github/workflows/reusable-cpp-linter.yml
             .github/workflows/ci.yml
@@ -142,20 +139,3 @@ jobs:
         id: cd-changes
         run: >-
           echo "run-cd=true" >> "${GITHUB_OUTPUT}"
-      - name: Get a list of the changed files relevant for the MLIR tests
-        if: github.event_name == 'pull_request'
-        id: changed-mlir-testable-files
-        uses: Ana06/get-changed-files@25f79e676e7ea1868813e21465014798211fad8c # v2.3.0
-        with:
-          filter: |
-            mlir/**
-            .github/workflows/reusable-mlir-tests.yml
-            plugins/catalyst/**
-            .github/workflows/reusable-mlir-catalyst-plugin-tests.yml
-      - name: Set a flag for running the MLIR tests
-        if: >-
-          github.event_name != 'pull_request'
-          || steps.changed-mlir-testable-files.outputs.added_modified_renamed != ''
-        id: mlir-changes
-        run: >-
-          echo "run-mlir=true" >> "${GITHUB_OUTPUT}"

CHANGELOG.md

@@ -9,6 +9,14 @@ This project adheres to [Semantic Versioning], with the exception that minor rel
 
 ## [Unreleased]
 
+### Changed
+
+- 🔧 Include `mlir/**` in C++ change detection ([#300]) ([**@burgholzer**])
+
+### Removed
+
+- 🔥 remove dedicated `run-mlir` MLIR output for reusable-change-detection.yml ([#300]) ([**@burgholzer**])
+
 ## [1.17.10] - 2026-01-04
 
 ### Fixed
@@ -260,6 +268,7 @@ _📚 Refer to the [GitHub Release Notes] for previous changelogs._
 
 <!-- PR links -->
 
+[#300]: https://github.com/munich-quantum-toolkit/workflows/pull/300
 [#298]: https://github.com/munich-quantum-toolkit/workflows/pull/298
 [#297]: https://github.com/munich-quantum-toolkit/workflows/pull/297
 [#296]: https://github.com/munich-quantum-toolkit/workflows/pull/296

UPGRADING.md

@@ -4,6 +4,13 @@ This document describes breaking changes and how to upgrade. For a complete list
 
 ## [Unreleased]
 
+### Removal of `run-mlir` output from change-detection
+
+This release removes the `run-mlir` output from the change-detection step of the `reusable-cpp-linter.yml` workflow.
+The output was only used in MQT Core, where MLIR will be enabled by default with the next release.
+Hence, this update includes `mlir/**` in the regular C++ file filter instead.
+Since this is only affecting the MQT Core repository, this is only flagged as a patch release.
+
 ## [1.17.6]
 
 ### Checking Python stub files