CI: add Windows to the CI matrix

.github/workflows/ci.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches: [master]
   pull_request:
-    branches: [master]
 
 jobs:
   macos_big_sur:
@@ -91,6 +90,60 @@ jobs:
       - name: Build and Test
         run: swift test -c release --enable-test-discovery
 
+  windows:
+    runs-on: windows-latest
+
+    name: "Windows (Swift 5.5)"
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: seanmiddleditch/gha-setup-vsdevenv@master
+      # - uses: actions/cache@v2
+      #   with:
+      #     path: .build
+      #     key: ${{ runner.os }}-spm-swift-5.5-${{ hashFiles('**/Package.resolved') }}
+      #     restore-keys: |
+      #       ${{ runner.os }}-spm-swift-5.5-
+
+      - name: Install swift-5.5 (2021-04-19 SNAPSHOT)
+        run: |
+          Install-Binary -Url "https://swift.org/builds/swift-5.5-branch/windows10/swift-5.5-DEVELOPMENT-SNAPSHOT-2021-04-19-a/swift-5.5-DEVELOPMENT-SNAPSHOT-2021-04-19-a-windows10.exe" -Name "installer.exe" -ArgumentList ("-q")
+      - name: Set Environment Variables
+        run: |
+          echo "SDKROOT=C:\Library\Developer\Platforms\Windows.platform\Developer\SDKs\Windows.sdk" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          echo "DEVELOPER_DIR=C:\Library\Developer" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+      - name: Adjust Paths
+        run: |
+          echo "C:\Library\Swift-development\bin;C:\Library\icu-67\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+          echo "C:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+      - name: Install Supporting Files
+        run: |
+          Copy-Item "$env:SDKROOT\usr\share\ucrt.modulemap" -destination "$env:UniversalCRTSdkDir\Include\$env:UCRTVersion\ucrt\module.modulemap"
+          Copy-Item "$env:SDKROOT\usr\share\visualc.modulemap" -destination "$env:VCToolsInstallDir\include\module.modulemap"
+          Copy-Item "$env:SDKROOT\usr\share\visualc.apinotes" -destination "$env:VCToolsInstallDir\include\visualc.apinotes"
+          Copy-Item "$env:SDKROOT\usr\share\winsdk.modulemap" -destination "$env:UniversalCRTSdkDir\Include\$env:UCRTVersion\um\module.modulemap"
+
+      # TODO(compnerd) figure out how to build libxml2
+      - name: Fetch libxml2
+        run: |
+          Invoke-WebRequest -Uri "https://artprodeus21.artifacts.visualstudio.com/A8fd008a0-56bc-482c-ba46-67f9425510be/3133d6ab-80a8-4996-ac4f-03df25cd3224/_apis/artifact/cGlwZWxpbmVhcnRpZmFjdDovL2NvbXBuZXJkL3Byb2plY3RJZC8zMTMzZDZhYi04MGE4LTQ5OTYtYWM0Zi0wM2RmMjVjZDMyMjQvYnVpbGRJZC8zNTI5NS9hcnRpZmFjdE5hbWUveG1sMi13aW5kb3dzLXg2NA2/content?format=zip" -OutFile $env:Temp\xml-windows-x64.zip
+          Expand-Archive -Path $env:Temp\xml-windows-x64.zip -DestinationPath $env:Temp -Force
+          Move-Item -Path $env:Temp\xml2-windows-x64\Library\libxml2-development -Destination C:\Library\ -Force
+      # TODO(compnerd) figure out how to build graphviz
+      - name: Fetch graphviz
+        run: |
+          Invoke-WebRequest -Uri "https://artprodeus21.artifacts.visualstudio.com/A8fd008a0-56bc-482c-ba46-67f9425510be/3133d6ab-80a8-4996-ac4f-03df25cd3224/_apis/artifact/cGlwZWxpbmVhcnRpZmFjdDovL2NvbXBuZXJkL3Byb2plY3RJZC8zMTMzZDZhYi04MGE4LTQ5OTYtYWM0Zi0wM2RmMjVjZDMyMjQvYnVpbGRJZC81MDQ4NS9hcnRpZmFjdE5hbWUvZ3JhcGh2aXotd2luZG93cy14NjQ1/content?format=zip" -OutFile $env:Temp\graphviz-windows-x64.zip
+          Expand-Archive -Path $env:Temp\graphviz-windows-x64.zip -Destination $env:Temp -Force
+          Move-Item -Path $env:Temp\graphviz-windows-x64\Library\graphviz-development -Destination C:\Library\ -Force
+
+      - name: Add graphviz to PATH
+        run: |
+          echo "C:\Library\graphviz-development\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+
+      - name: Build and Test
+        run: |
+          swift build -v -c release -Xlinker -LC:\Library\graphviz-development\usr\lib -Xcc -DLIBXML_STATIC -Xcc -IC:\Library\libxml2-development\usr\include -Xcc -IC:\Library\libxml2-development\usr\include\libxml2 -Xlinker -LC:\Library\libxml2-development\usr\lib -Xcc -IC:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr\include -Xlinker -LC:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr\lib
+
   validate-assets:
     runs-on: ubuntu-latest
 

Package@swift-5.5.swift

@@ -6,21 +6,21 @@ import PackageDescription
 let package = Package(
     name: "swift-doc",
     platforms: [
-        .macOS(.v10_15)
+        .macOS(.v11)
     ],
     products: [
         .executable(name: "swift-doc", targets: ["swift-doc"]),
         .library(name: "SwiftDoc", targets: ["SwiftDoc"])
     ],
     dependencies: [
         .package(name: "SwiftSyntax", url: "https://github.com/apple/swift-syntax.git", .revision("release/5.5")),
-        .package(url: "https://github.com/SwiftDocOrg/SwiftSemantics.git", .upToNextMinor(from: "0.3.2")),
-        .package(url: "https://github.com/SwiftDocOrg/CommonMark.git", .upToNextMinor(from: "0.5.0")),
+        .package(url: "https://github.com/SwiftDocOrg/SwiftSemantics.git", .revision("0.3.2")),
+        .package(url: "https://github.com/SwiftDocOrg/CommonMark.git", .upToNextMinor(from: "0.5.1")),
         .package(url: "https://github.com/SwiftDocOrg/SwiftMarkup.git", .upToNextMinor(from: "0.3.0")),
         .package(url: "https://github.com/SwiftDocOrg/GraphViz.git", .upToNextMinor(from: "0.4.1")),
         .package(url: "https://github.com/NSHipster/HypertextLiteral.git", .upToNextMinor(from: "0.0.2")),
         .package(url: "https://github.com/SwiftDocOrg/Markup.git", .upToNextMinor(from: "0.1.2")),
-        .package(url: "https://github.com/NSHipster/SwiftSyntaxHighlighter.git", .revision("1.2.2")),
+        .package(url: "https://github.com/NSHipster/SwiftSyntaxHighlighter.git", .revision("1.2.4")),
         .package(url: "https://github.com/apple/swift-argument-parser.git", .upToNextMinor(from: "0.3.2")),
         .package(url: "https://github.com/apple/swift-log.git", .upToNextMinor(from: "1.4.2")),
         .package(name: "LoggingGitHubActions", url: "https://github.com/NSHipster/swift-log-github-actions.git", .upToNextMinor(from: "0.0.1")),