ci: diagnose tool restore environment

.gitea/workflows/ci.yml

@@ -37,7 +37,19 @@ jobs:
             nuget-${{ runner.os }}-
       - name: Restore tools
         shell: powershell
-        run: dotnet tool restore --tool-manifest .config/dotnet-tools.json
+        run: |
+          $ErrorActionPreference = "Stop"
+          Get-Location
+          Get-ChildItem .config -File
+          Write-Output "USERPROFILE=$env:USERPROFILE"
+          Write-Output "DOTNET_CLI_HOME=$env:DOTNET_CLI_HOME"
+          Write-Output "DOTNET_ROOT=$env:DOTNET_ROOT"
+          Write-Output "NUGET_PACKAGES=$env:NUGET_PACKAGES"
+          dotnet --list-sdks
+          dotnet tool restore --tool-manifest .config/dotnet-tools.json
+          if ($LASTEXITCODE -ne 0) { throw "tool restore failed ($LASTEXITCODE)" }
+          dotnet tool list
+          Get-ChildItem "$env:USERPROFILE/.dotnet/tools" -Recurse -ErrorAction SilentlyContinue | Select-Object FullName
       - name: Restore
         shell: powershell
         run: dotnet restore src/RgbLedStripController/RgbLedStripController.csproj --configfile NuGet.Config
@@ -81,7 +93,19 @@ jobs:
             nuget-${{ runner.os }}-
       - name: Restore tools
         shell: powershell
-        run: dotnet tool restore --tool-manifest .config/dotnet-tools.json
+        run: |
+          $ErrorActionPreference = "Stop"
+          Get-Location
+          Get-ChildItem .config -File
+          Write-Output "USERPROFILE=$env:USERPROFILE"
+          Write-Output "DOTNET_CLI_HOME=$env:DOTNET_CLI_HOME"
+          Write-Output "DOTNET_ROOT=$env:DOTNET_ROOT"
+          Write-Output "NUGET_PACKAGES=$env:NUGET_PACKAGES"
+          dotnet --list-sdks
+          dotnet tool restore --tool-manifest .config/dotnet-tools.json
+          if ($LASTEXITCODE -ne 0) { throw "tool restore failed ($LASTEXITCODE)" }
+          dotnet tool list
+          Get-ChildItem "$env:USERPROFILE/.dotnet/tools" -Recurse -ErrorAction SilentlyContinue | Select-Object FullName
       - name: Assert tag matches csproj version
         shell: powershell
         run: |