Disable self hosted runners and runner selection

.github/workflows/ci.yml

@@ -36,18 +36,23 @@ env:
   TZ: "Europe/London"
 
 jobs:
-  runner-selection:
-    name: Runner Selection
-    runs-on: ${{ github.repository_owner == 'boostorg' && fromJSON('[ "self-hosted", "linux", "x64", "ubuntu-latest-aws" ]') || 'ubuntu-latest' }}
-    outputs:
-      labelmatrix: ${{ steps.aws_hosted_runners.outputs.labelmatrix }}
-    steps:
-      - name: AWS Hosted Runners
-        id: aws_hosted_runners
-        uses: cppalliance/aws-hosted-runners@v1.0.0
+  # Self-hosted runner selection is disabled to allow re-running individual
+  # failed jobs from the GitHub Actions UI. When using dynamic runner selection,
+  # the runs-on value depends on this job's output, which isn't available when
+  # re-running a subset of jobs.
+  #
+  # runner-selection:
+  #   name: Runner Selection
+  #   runs-on: ${{ github.repository_owner == 'boostorg' && fromJSON('[ "self-hosted", "linux", "x64", "ubuntu-latest-aws" ]') || 'ubuntu-latest' }}
+  #   outputs:
+  #     labelmatrix: ${{ steps.aws_hosted_runners.outputs.labelmatrix }}
+  #   steps:
+  #     - name: AWS Hosted Runners
+  #       id: aws_hosted_runners
+  #       uses: cppalliance/aws-hosted-runners@v1.0.0
 
   build:
-    needs: [ runner-selection ]
+    # needs: [ runner-selection ]
     defaults:
       run:
         shell: bash
@@ -266,7 +271,9 @@ jobs:
             install: "gcc-multilib g++-multilib"
 
     name: ${{ matrix.name }}
-    runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)[matrix.runs-on] }}
+    # Skip self-hosted runner selection for now
+    # runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)[matrix.runs-on] }}
+    runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ matrix.container }}
       options: --privileged
@@ -506,13 +513,15 @@ jobs:
           echo "" >> $GITHUB_STEP_SUMMARY
 
   changelog:
-    needs: [ runner-selection ]
+    # needs: [ runner-selection ]
     defaults:
       run:
         shell: bash
 
     name: Changelog Summary
-    runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)['ubuntu-22.04'] }}
+    # Skip self-hosted runner selection for now
+    # runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)['ubuntu-22.04'] }}
+    runs-on: 'ubuntu-22.04'
     timeout-minutes: 120
 
     steps:
@@ -531,9 +540,11 @@ jobs:
           tag-pattern: 'boost-.*\..*\..*'
 
   antora:
-    needs: [ runner-selection ]
+    # needs: [ runner-selection ]
     name: Antora Docs
-    runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)['ubuntu-latest'] }}
+    # Skip self-hosted runner selection for now
+    # runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)['ubuntu-latest'] }}
+    runs-on: 'ubuntu-latest'
     defaults:
       run:
         shell: bash