Skip MSI build for prerelease versions

- MSI versions cannot have a suffix such as -rc1, so wix build fails
- Release is still published

.github/workflows/release.yml

@@ -99,24 +99,31 @@ jobs:
     needs: release
     runs-on: windows-latest
     environment: release
+    env:
+      # MSI versions cannot have a suffix such as -rc1
+      BUILD_MSI: ${{ !contains(needs.release.outputs.version, '-') }}
     steps:
       - uses: actions/checkout@v7
 
       - uses: actions/download-artifact@v8
+        if: env.BUILD_MSI == 'true'
         with:
           name: windows-binaries
           path: dist
 
       - uses: actions/setup-dotnet@v6
+        if: env.BUILD_MSI == 'true'
         with:
           dotnet-version: '8.0.x'
 
       # WiX 5 is the last release that does not require accepting the WiX
       # Open Source Maintenance Fee EULA; main.wxs uses the v4/v5 schema.
       - name: Install WiX
+        if: env.BUILD_MSI == 'true'
         run: dotnet tool install --global wix --version 5.0.2
 
       - name: Build Windows MSI installers
+        if: env.BUILD_MSI == 'true'
         shell: bash
         run: |
           set -e
@@ -130,6 +137,7 @@ jobs:
           ls -la dist/*.msi
 
       - uses: actions/upload-artifact@v7
+        if: env.BUILD_MSI == 'true'
         with:
           name: windows-msi
           path: dist/*.msi
@@ -142,12 +150,14 @@ jobs:
         run: |
           set -e
           V='${{ needs.release.outputs.version }}'
-          sums="fzf_${V}_checksums.txt"
-          # Drop MSI lines from a previous run of this job
-          gh release download "v$V" -p "$sums" -O - | grep -v '\.msi$' > "dist/$sums"
-          # sha256sum on Windows may print '<hash> *<name>'
-          (cd dist && sha256sum fzf-*.msi) | sed 's/ \*/  /' >> "dist/$sums"
-          gh release upload "v$V" dist/*.msi "dist/$sums" --clobber
+          if [[ $BUILD_MSI == true ]]; then
+            sums="fzf_${V}_checksums.txt"
+            # Drop MSI lines from a previous run of this job
+            gh release download "v$V" -p "$sums" -O - | grep -v '\.msi$' > "dist/$sums"
+            # sha256sum on Windows may print '<hash> *<name>'
+            (cd dist && sha256sum fzf-*.msi) | sed 's/ \*/  /' >> "dist/$sums"
+            gh release upload "v$V" dist/*.msi "dist/$sums" --clobber
+          fi
           gh release edit "v$V" --draft=false
         env:
           GITHUB_TOKEN: ${{ secrets.RELEASE_PAT }}