Selective updates

Only the WSL-Pro-Service needs to stay up-to-date.
And we only need to update modules when these have changed

.github/actions/update-workspace-dependencies/action.yaml

@@ -2,8 +2,8 @@ name: Update Workspace dependencies
 description: Updates internal dependencies in a Go Workspace
 
 inputs:
-  token:
-    description: Github token
+  module:
+    description: The go module to update the dependencies of
     required: true
 
 runs:
@@ -17,4 +17,6 @@ runs:
     - name: Update workspace dependencies
       shell: bash
       run: ${{ github.action_path }}/update-workspace-dependencies.sh
+      env:
+        TARGET_MODULE: ${{ inputs.module }}
 

.github/actions/update-workspace-dependencies/update-workspace-dependencies.sh

@@ -1,32 +1,37 @@
 #!/bin/bash
 set -eu
 
+cd ${TARGET_MODULE}
+current_commit=$(git rev-parse HEAD~0)
+
+# Find internal dependencies
 repo="github.com/${GITHUB_REPOSITORY}"
+url="${repo}/${TARGET_MODULE}"
+regex="s#${url} \(${repo}/[^@]\+@v.*\)#\1#p"
+dependencies=`go mod graph | sed -n "${regex}"`
 
-# Gather all go modules
-modules=$(go work edit -json                                \
-    | jq -r '.Use | keys[] as $k | "\(.[$k].DiskPath)"'     \
-    | sed $'s#\.\/##'                                       \
-)
+for dependency in ${dependencies}; do  
+    pattern="^${repo}/\(.*\)@v\([^-]\+\)-\([^-]\+\)-\(.*\)$"
+    # Capture groups: (https://go.dev/ref/mod#versions)
+    # \1 Dependency path
+    # \2 Base version prefix
+    # \3 Timestamp
+    # \4 Revision identifier (12-character prefix of the commit hash)
 
-# Find internal dependencies
-for mod in ${modules} ; do
-    cd "${mod}"
-    echo "::group::Updating module ${mod}::"
+    dep_path=`echo $dependency | sed "s#${pattern}#\1#"`
+    dep_commit=`echo $dependency | sed "s#${pattern}#\4#"`
 
-    url="${repo}/${mod}"
-    regex="s#${url} \(${repo}/[^@]\+\)@v.*#\1#p"
-    dependencies=`go mod graph | sed -n "${regex}"`
-
-    for dep in ${dependencies}; do
-        go get "${dep}@main"
-    done
+    diff_files="$(git diff --name-only ${dep_commit} -- "../${dep_path}")"
+    if [ -z "${diff_files}" ] ; then
+        continue
+    fi
+
+    echo "::group::Updating dependency ${dep_path}::"
+
+    echo "Files changed since commit ${dep_commit}:"
+    echo "${diff_files}"
+
+    go get "${repo}/${dep_path}@${current_commit}"
 
-    go mod tidy
-
-    echo "Done"
     echo "::endgroup::"
-    cd ~-
 done
-
-go work sync

.github/workflows/auto-updates.yaml

@@ -135,18 +135,17 @@ jobs:
           go-version-file: go.work
       - name: Update submodules
         uses: ./.github/actions/update-workspace-dependencies
+        with:
+          module: wsl-pro-service
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v5
         with:
           commit-message: Auto update internal dependencies
-          title: Auto update internal dependencies
+          title: Auto update WSL-Pro-Service dependencies
           labels: automated pr
           body: "[Auto-generated pull request](https://github.com/canonical/ubuntu-pro-for-windows/actions/workflows/auto-updates.yaml) by GitHub Action"
           branch: auto-updates/update-internal-dependencies
           token: ${{ secrets.GITHUB_TOKEN }}
       - name: Push branch
         run: |
           git push origin auto-updates/update-internal-dependencies:main
-        
-          
-