fix errors

.github/workflows/build_all.yml

@@ -152,20 +152,29 @@ jobs:
             self-hosted-runner: orca-lnx-server
           - arch: aarch64
             runner: ubuntu-24.04-arm
-    # Don't run scheduled builds on forks; skip aarch64 on self-hosted (no ARM runner)
-    if: ${{ !cancelled() && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') && (!vars.SELF_HOSTED || matrix.variant.self-hosted-runner) }}
-    runs-on: ${{ vars.SELF_HOSTED && matrix.variant.self-hosted-runner || matrix.variant.runner }}
+    # Don't run scheduled builds on forks
+    if: ${{ !cancelled() && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') }}
+    # When SELF_HOSTED is set, use self-hosted runner if available, otherwise fall back to
+    # cheapest GitHub runner (variant will be skipped via step conditions anyway)
+    runs-on: ${{ vars.SELF_HOSTED && (matrix.variant.self-hosted-runner || 'ubuntu-24.04') || matrix.variant.runner }}
     env:
       date:
       ver:
       ver_pure:
     steps:
+    - name: Check if variant should run
+      id: should-run
+      run: echo "skip=true" >> $GITHUB_OUTPUT
+      shell: bash
+      if: ${{ vars.SELF_HOSTED && !matrix.variant.self-hosted-runner }}
     - name: "Remove unneeded stuff to free disk space"
-      if: ${{ !vars.SELF_HOSTED }}
+      if: ${{ steps.should-run.outputs.skip != 'true' && !vars.SELF_HOSTED }}
       run:
         rm -rf /usr/local/lib/android/* /usr/share/dotnet/* /opt/ghc1/* "/usr/local/share/boost1/*" /opt/hostedtoolcache1/*
     - uses: actions/checkout@v6
+      if: ${{ steps.should-run.outputs.skip != 'true' }}
     - name: Get the version and date
+      if: ${{ steps.should-run.outputs.skip != 'true' }}
       run: |
         ver_pure=$(grep 'set(SoftFever_VERSION' version.inc | cut -d '"' -f2)
         if [[ "${{ github.event_name }}" == "pull_request" ]]; then
@@ -182,30 +191,33 @@ jobs:
       shell: bash
     # Manage flatpak-builder cache externally so PRs restore but never upload
     - name: Restore flatpak-builder cache
-      if: github.event_name == 'pull_request'
+      if: ${{ steps.should-run.outputs.skip != 'true' && github.event_name == 'pull_request' }}
       uses: actions/cache/restore@v4
       with:
         path: .flatpak-builder
         key: flatpak-builder-${{ matrix.variant.arch }}-${{ github.event.pull_request.base.sha }}
         restore-keys: flatpak-builder-${{ matrix.variant.arch }}-
     - name: Save/restore flatpak-builder cache
-      if: github.event_name != 'pull_request'
+      if: ${{ steps.should-run.outputs.skip != 'true' && github.event_name != 'pull_request' }}
       uses: actions/cache@v4
       with:
         path: .flatpak-builder
         key: flatpak-builder-${{ matrix.variant.arch }}-${{ github.sha }}
         restore-keys: flatpak-builder-${{ matrix.variant.arch }}-
     - name: Disable debug info for faster CI builds
+      if: ${{ steps.should-run.outputs.skip != 'true' }}
       run: |
         sed -i '/^build-options:/a\  no-debuginfo: true\n  strip: true' \
           scripts/flatpak/io.github.orcaslicer.OrcaSlicer.yml
       shell: bash
     - name: Inject git commit hash into Flatpak manifest
+      if: ${{ steps.should-run.outputs.skip != 'true' }}
       run: |
         sed -i "/name: OrcaSlicer/{n;s|buildsystem: simple|buildsystem: simple\n    build-options:\n      env:\n        git_commit_hash: \"$git_commit_hash\"|}" \
           scripts/flatpak/io.github.orcaslicer.OrcaSlicer.yml
       shell: bash
     - uses: flatpak/flatpak-github-actions/flatpak-builder@master
+      if: ${{ steps.should-run.outputs.skip != 'true' }}
       with:
         bundle: OrcaSlicer-Linux-flatpak_${{ env.ver }}_${{ matrix.variant.arch }}.flatpak
         manifest-path: scripts/flatpak/io.github.orcaslicer.OrcaSlicer.yml
@@ -213,12 +225,13 @@ jobs:
         arch: ${{ matrix.variant.arch }}
         upload-artifact: false
     - name: Upload artifacts Flatpak
+      if: ${{ steps.should-run.outputs.skip != 'true' }}
       uses: actions/upload-artifact@v6
       with:
         name: OrcaSlicer-Linux-flatpak_${{ env.ver }}_${{ matrix.variant.arch }}.flatpak
         path: '/__w/OrcaSlicer/OrcaSlicer/OrcaSlicer-Linux-flatpak_${{ env.ver }}_${{ matrix.variant.arch }}.flatpak'
     - name: Deploy Flatpak to nightly release
-      if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && !vars.SELF_HOSTED
+      if: ${{ steps.should-run.outputs.skip != 'true' && github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && !vars.SELF_HOSTED }}
       uses: WebFreak001/deploy-nightly@v3.2.0
       with:
         upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}

.github/workflows/build_orca.yml

@@ -297,7 +297,7 @@ jobs:
         run: .\build_release_vs.bat slicer
 
       - name: Create installer Win
-        if: runner.os == 'Windows'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         working-directory: ${{ github.workspace }}/build
         run: |
           cpack -G NSIS
@@ -322,7 +322,7 @@ jobs:
           path: ${{ github.workspace }}/build/OrcaSlicer
 
       - name: Upload artifacts Win installer
-        if: runner.os == 'Windows'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_Windows_${{ env.ver }}