Build NSIS installer in Windows CI

Author: grodansparadis

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
               -DCMAKE_TOOLCHAIN_FILE=$VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake
               -DVCPKG_TARGET_TRIPLET=x64-windows
               -DVSCPD_BUILD_MANPAGES=OFF
-              -DVSCPD_PACKAGE_GENERATORS=ZIP
+              -DVSCPD_PACKAGE_GENERATORS=ZIP\;NSIS
 
     steps:
       - name: Checkout
@@ -78,6 +78,14 @@ jobs:
           & "$env:RUNNER_TEMP/vcpkg/bootstrap-vcpkg.bat"
           "VCPKG_ROOT=$env:RUNNER_TEMP/vcpkg" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
 
+      - name: Install NSIS
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          choco install nsis -y --no-progress
+          "C:\Program Files (x86)\NSIS" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+          & "C:\Program Files (x86)\NSIS\makensis.exe" /VERSION
+
       - name: Configure
         shell: bash
         run: ${{ matrix.configure }}