OCC-245: Add the option to publish without Microsoft.SourceLink.GitHub

.github/actions/publish-nuget/Add-SourceLinkPackage.ps1

@@ -45,7 +45,7 @@ foreach ($projectFile in $projectFiles)
     # Central Package Management (https://learn.microsoft.com/en-us/nuget/consume-packages/central-package-management).
     # Unfortunately, this makes NuGet publishing a lot slower than using dotnet restore, and it's also more verbose
     # (without the ability to configure that verbosity).
-    dotnet add $projectFile.FullName package 'Microsoft.SourceLink.GitHub' --source 'https://api.nuget.org/v3/index.json'
+    dotnet add $projectFile.FullName package 'Microsoft.SourceLink.GitHub'
 
     # The NuGetBuild property mustn't remain in the project file.
     $projectXml = [xml](Get-Content $projectFile)

.github/actions/publish-nuget/action.yml

@@ -35,6 +35,10 @@ inputs:
       https://github.com/actions/upload-artifact#retention-period for more details. Note that this only affects the
       retention of the workflow run's artifact, not the artifacts attached to the release created on GitHub; those will
       remain indefinitely.
+  add-source-link-package:
+    required: false
+    default: 'true'
+    description: If set to "true", the Microsoft.SourceLink.GitHub NuGet package is added to the projects.
 
 runs:
   using: composite
@@ -114,7 +118,15 @@ runs:
     # This also implicitly restores NuGet dependencies.
     - name: Add Source Link package
       shell: pwsh
-      run: Add-SourceLinkPackage
+      run: |
+        if ('${{ inputs.add-source-link-package }}' -eq 'true')
+        {
+            Add-SourceLinkPackage
+        }
+        else
+        {
+            dotnet restore -p:NuGetBuild=true
+        }
 
     - name: Update package manifest version
       shell: pwsh

.github/workflows/publish-nuget.yml

@@ -58,6 +58,10 @@ on:
           https://github.com/actions/upload-artifact#retention-period for more details. Note that this only affects the
           retention of the workflow run's artifact, not the artifacts attached to the release created on GitHub; those
           will remain indefinitely.
+      add-source-link-package:
+        type: string
+        default: 'true'
+        description: If set to "true", the Microsoft.SourceLink.GitHub NuGet package is added to the projects.
 
 jobs:
   publish-nuget:
@@ -83,6 +87,7 @@ jobs:
           dotnet-pack-include-symbols: ${{ inputs.dotnet-pack-include-symbols }}
           publish-version: ${{ inputs.publish-version }}
           nuget-artifact-retention-days: ${{ inputs.nuget-artifact-retention-days }}
+          add-source-link-package: ${{ inputs.add-source-link-package }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           API_KEY: ${{ secrets.API_KEY }}