Try another way to fix github actions on windows

.github/workflows/windows.yml

@@ -0,0 +1,72 @@
+name: cardano-launcher Windows Tests
+
+on: [push]
+
+jobs:
+  tests:
+    runs-on: windows-2016
+    name: Run tests on Windows
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: 'Configure cardano-wallet source'
+        shell: powershell
+        run: |
+          $sources = (Get-Content "nix/sources.json" -Raw) | ConvertFrom-Json | Select -expand "cardano-wallet" | Select owner, repo, rev
+          Write-Output $sources
+          echo "REPO_OWNER=$($sources.owner)" >> $Env:GITHUB_ENV
+          echo "REPO_NAME=$($sources.repo)" >> $Env:GITHUB_ENV
+          echo "COMMIT=$($sources.rev)" >> $Env:GITHUB_ENV
+
+      - name: 'Wait for Hydra build'
+        uses: rvl/hydra-build-products-action@master
+        id: hydra
+        with:
+          hydra: 'https://hydra.iohk.io'
+          jobs: 'cardano-wallet-win64'
+        timeout-minutes: 45
+
+      - name: Fetch cardano-wallet
+        shell: powershell
+        run: |
+          echo "Build product URLs: ${{ steps.hydra.outputs.buildProducts }}"
+          "${{ steps.hydra.outputs.buildProducts }}".Split(" ") | ForEach {
+            $url = $_
+            $output = $url.Split("/")[-1]
+            Invoke-WebRequest -Uri $url -OutFile $output
+          }
+          Expand-Archive -Force -Path "cardano-wallet-v20*win64.zip" -DestinationPath .
+          Expand-Archive -Force -Path "cardano-wallet-*-deployments.zip" -DestinationPath deployments
+          Get-ChildItem
+          echo "CARDANO_NODE_CONFIGS=$Env:GITHUB_WORKSPACE\deployments" >> $Env:GITHUB_ENV
+
+      - name: Setup node
+        uses: actions/setup-node@v1
+        with:
+          node-version: 10
+      - run: npm install
+        id: install
+      - run: npm test unit
+        id: unit
+        timeout-minutes: 5
+        if: '${{ always() }}'
+      - run: npm test integration
+        id: integration
+        timeout-minutes: 5
+        if: '${{ always() }}'
+      - run: npm test cli
+        id: cli
+        timeout-minutes: 5
+        if: '${{ always() }}'
+
+      - name: Test results
+        if: always()
+        shell: powershell
+        run: |
+          echo "unit test outcome:        $Env:unit"
+          echo "integration test outcome: $Env:integration"
+          echo "cli test outcome:         $Env:cli"
+        env:
+          unit: ${{ steps.unit.outcome }}
+          integration: ${{ steps.integration.outcome }}
+          cli: ${{ steps.cli.outcome }}