Download Swift for Ubuntu20.04

Author: BalestraPatrick

modules/rules_swift/1.2.0/presubmit.yml

@@ -1,15 +1,23 @@
+shell_commands: &shell_commands
+- "echo --- Downloading and extracting Swift $SWIFT_VERSION to $SWIFT_HOME"
+- "mkdir $SWIFT_HOME"
+- "curl https://download.swift.org/swift-${SWIFT_VERSION}-release/ubuntu2004/swift-${SWIFT_VERSION}-RELEASE/swift-${SWIFT_VERSION}-RELEASE-ubuntu20.04.tar.gz | tar xvz --strip-components=1 -C $SWIFT_HOME"
+
 matrix:
   platform:
-  - centos7
-  - debian10
   - ubuntu2004
-  - windows
 tasks:
   verify_targets:
     name: Verify build targets
     platform: ${{ platform }}
     environment:
       CC: "clang"
+      SWIFT_VERSION: "5.5.3"
+      SWIFT_HOME: "$HOME/swift-$SWIFT_VERSION"
+      PATH: "$PATH:$SWIFT_HOME/usr/bin"
+    shell_commands: *shell_commands
+    build_flags:
+    - "--action_env=PATH"
     build_targets:
     - "@rules_swift//examples/xplatform/..."
   verify_targets_macos: