.github/workflows/ci-linux-incremental.yml: Update build_target scrip…

…t from build.yml, use ptest-nodoc to avoid duplicate doc-html build

.github/workflows/ci-linux-incremental.yml

@@ -41,12 +41,11 @@ jobs:
     runs-on: ubuntu-latest
     name: List changed packages
     outputs:
-      uninstall_targets: ${{ steps.build-targets.outputs.uninstall_targets }}
       build_targets:     ${{ steps.build-targets.outputs.build_targets }}
     steps:
       - uses: actions/checkout@v4
       - name: Get all packages that have changed
-        id: changed-packages
+        id: changed-files
         uses: tj-actions/changed-files@v44
         with:
           files_yaml: |
@@ -58,14 +57,19 @@ jobs:
       - name: Determine targets to build
         id: build-targets
         run: |
-          echo "uninstall_targets=$(echo $(for a in '' ${{ steps.changed-packages.outputs.configures_all_changed_files }}; do echo $a | sed -E 's,build/pkgs/([a-z0-9][_.a-z0-9]*)/spkg-configure[.]m4 *,\1-uninstall,'; done | sort -u))" >> $GITHUB_OUTPUT
-          echo "build_targets=$(echo $(for a in '' ${{ steps.changed-packages.outputs.pkgs_all_changed_files }}; do SPKG=$(echo $a | sed -E 's,-,_,g;s,(build/)?pkgs/([a-z0-9][-_.a-z0-9]*)/[^ ]* *,\2,;'); if [ -f "build/pkgs/$SPKG/checksums.ini" -o -f "build/pkgs/$SPKG/requirements.txt" -o -f "build/pkgs/$SPKG/spkg-install" ]; then echo "$SPKG-ensure"; fi; done | sort -u))" >> $GITHUB_OUTPUT
+          uninstall_targets=$(echo $(for a in '' ${{ steps.changed-files.outputs.configures_all_changed_files }}; do echo $a | sed -E 's,build/pkgs/([a-z0-9][_.a-z0-9]*)/spkg-configure[.]m4 *,\1-uninstall,'; done | sort -u))
+          build_targets=$(echo $(for a in '' ${{ steps.changed-files.outputs.pkgs_all_changed_files }}; do SPKG=$(echo $a | sed -E 's,-,_,g;s,(build/)?pkgs/([a-z0-9][-_.a-z0-9]*)/[^ ]* *,\2,;'); if [ -f "build/pkgs/$SPKG/checksums.ini" -o -f "build/pkgs/$SPKG/requirements.txt" -o -f "build/pkgs/$SPKG/spkg-install" ]; then echo "$SPKG-ensure"; fi; done | sort -u))
+          if [ -n "$uninstall_targets" ]; then
+              echo "build_targets=$uninstall_targets reconfigure $build_targets ci-build-with-fallback" >> $GITHUB_OUTPUT
+          else
+              echo "build_targets=$build_targets ci-build-with-fallback" >> $GITHUB_OUTPUT
+          fi
           cat $GITHUB_OUTPUT
       - uses: actions/checkout@v4
         with:
           ref: ${{ github.base_ref }}
           path: worktree-base
-        if: github.base_ref
+        if: github.base_ref && steps.changed-files.outputs.pkgs_all_changed_files
       - name: Compute metrics
         run: |
           export PATH=build/bin:$PATH
@@ -88,7 +92,7 @@ jobs:
       from_docker_target: "with-targets"
       from_docker_tag: "dev"
       docker_targets: "with-targets"
-      targets: "${{needs.changed_files.outputs.uninstall_targets}} reconfigure ${{needs.changed_files.outputs.build_targets}} build doc-html ptest"
+      targets: "${{needs.changed_files.outputs.build_targets}} doc-html ptest-nodoc"
       tox_system_factors: >-
         ["ubuntu-focal",
          "ubuntu-noble",
@@ -115,7 +119,7 @@ jobs:
       from_docker_target: "with-targets"
       from_docker_tag: "dev"
       docker_targets: "with-targets"
-      targets: "${{needs.changed_files.outputs.uninstall_targets}} reconfigure ${{needs.changed_files.outputs.build_targets}} build doc-html ptest"
+      targets: "${{needs.changed_files.outputs.build_targets}} doc-html ptest-nodoc"
       # Only test systems with a usable system python (>= 3.9)
       # with only a small number of test failures as of 10.2.rc0
       tox_system_factors: >-