Fetch the Swift toolchain as part of the CI job

I'm trying to remove parts from our Docker containers that are only used by one or few projects on CI. Instead, we can download & extract them during the shell_commands step of the projects. This also allows the projects themselves to control the exact versioning of their dependencies and makes it easier to test upgrades.
bazelbuild · Aug 11, 2021 · 1366ac1 · 1366ac1
1 parent 93a91f4
commit 1366ac1
Showing 1 changed file with 16 additions and 5 deletions.
diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
@@ -13,18 +13,18 @@ x_defaults:
     platform: ubuntu1804
     environment:
       CC: clang
+      SWIFT_HOME: "$HOME/swift-5.4.2"
+      PATH: "$PATH:$SWIFT_HOME/usr/bin"
     build_flags: &linux_flags
       # On Linux, we look for Swift toolchain binaries on the path. We may be
       # able to change this when we start auto-downloading toolchains (see
       # https://github.com/bazelbuild/rules_swift/issues/4).
       - "--action_env=PATH"
     build_targets:
-      - "--"
       - "//examples/..."
       - "-//examples/apple/..."
     test_flags: *linux_flags
     test_targets:
-      - "--"
       - "//doc/..."
       - "//examples/..."
       - "//test/..."
@@ -53,20 +53,31 @@ tasks:
   ubuntu1804_latest:
     name: "Latest Bazel"
     bazel: latest
+    shell_commands:
+      - "echo --- Downloading and extracting Swift 5.4.2 to $SWIFT_HOME"
+      - "mkdir $SWIFT_HOME"
+      - "curl https://mirror.bazel.build/swift.org/builds/swift-5.4.2-release/ubuntu1804/swift-5.4.2-RELEASE/swift-5.4.2-RELEASE-ubuntu18.04.tar.gz | tar xvz --strip-components=1 -C $SWIFT_HOME"
     <<: *linux_common
 
   ubuntu1804_last_green:
     name: "Last Green Bazel"
     bazel: last_green
+    shell_commands:
+      - "echo --- Downloading and extracting Swift 5.4.2 to $SWIFT_HOME"
+      - "mkdir $SWIFT_HOME"
+      - "curl https://mirror.bazel.build/swift.org/builds/swift-5.4.2-release/ubuntu1804/swift-5.4.2-RELEASE/swift-5.4.2-RELEASE-ubuntu18.04.tar.gz | tar xvz --strip-components=1 -C $SWIFT_HOME"
     <<: *linux_common
 
   ubuntu1804_latest_head_deps:
     name: "Latest Bazel with Head Deps"
     bazel: latest
     shell_commands:
-    # Update the WORKSPACE to use head versions of some deps to ensure nothing
-    # has landed on them breaking this project.
-    - .bazelci/update_workspace_to_deps_heads.sh
+      - "echo --- Downloading and extracting Swift 5.4.2 to $SWIFT_HOME"
+      - "mkdir $SWIFT_HOME"
+      - "curl https://mirror.bazel.build/swift.org/builds/swift-5.4.2-release/ubuntu1804/swift-5.4.2-RELEASE/swift-5.4.2-RELEASE-ubuntu18.04.tar.gz | tar xvz --strip-components=1 -C $SWIFT_HOME"
+      # Update the WORKSPACE to use head versions of some deps to ensure nothing
+      # has landed on them breaking this project.
+      - .bazelci/update_workspace_to_deps_heads.sh
     <<: *linux_common
 
 buildifier: latest