fix(linux): move environment to separate job and fix checkout

In #11571 we tried to fix the failing API verification by moving
setting up the environment and restoring artifacts to the same job
as the api verification itself. However, this doesn't help and the
`artifacts` subdirectory still vanishes, caused by
actions/checkout#1201.

This change reverts the change introduced in #11571 and changes the
git checkout to end in a separate subdirectory.

Reverts: #11571

.github/workflows/api-verification.yml

@@ -11,8 +11,7 @@ env:
   GH_TOKEN: ${{ github.token }}
 
 jobs:
-  api_verification:
-    name: Verify API for libkeymancore.so
+  setup_environment:
     runs-on: ubuntu-latest
     outputs:
       VERSION: ${{ steps.environment_step.outputs.VERSION }}
@@ -40,15 +39,21 @@ jobs:
         pwd
         ls -al artifacts/
 
+  api_verification:
+    name: Verify API for libkeymancore.so
+    needs: setup_environment
+    runs-on: ubuntu-latest
+
+    steps:
     - name: Set pending status on PR builds
       id: set_status
-      if: steps.environment_step.outputs.IS_TEST_BUILD == 'true'
+      if: needs.setup_environment.outputs.IS_TEST_BUILD == 'true'
       shell: bash
       run: |
         gh api \
           --method POST \
           -H "Accept: application/vnd.github+json" \
-          /repos/$GITHUB_REPOSITORY/statuses/${{ steps.environment_step.outputs.GIT_SHA }} \
+          /repos/$GITHUB_REPOSITORY/statuses/${{ needs.setup_environment.outputs.GIT_SHA }} \
           -f state='pending' \
           -f target_url="$GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID" \
           -f description='API verification started' \
@@ -57,44 +62,45 @@ jobs:
     - name: Checkout
       uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 #v4.1.1
       with:
-        ref: '${{ steps.environment_step.outputs.GIT_SHA }}'
+        ref: '${{ needs.setup_environment.outputs.GIT_SHA }}'
         fetch-depth: 0
         clean: false
+        path: ${{ github.workspace }}/keyman/
 
     - name: Install devscripts
-      uses: ./.github/actions/apt-install
+      uses: ${{ github.workspace }}/keyman/.github/actions/apt-install
       with:
         packages: devscripts equivs
 
-    - name: "Verify API for libkeymancore.so (${{ steps.environment_step.outputs.GIT_BRANCH }}, branch ${{ steps.environment_step.outputs.GIT_BASE_BRANCH }}, by ${{ steps.environment_step.outputs.GIT_USER }}) - "
+    - name: "Verify API for libkeymancore.so (${{ needs.setup_environment.outputs.GIT_BRANCH }}, branch ${{ needs.setup_environment.outputs.GIT_BASE_BRANCH }}, by ${{ needs.setup_environment.outputs.GIT_USER }}) - "
       run: |
         pwd
         ls -al artifacts/
         echo "GITHUB_WORKSPACE=${GITHUB_WORKSPACE}"
         ls -al ${GITHUB_WORKSPACE}
         ls -al ${GITHUB_WORKSPACE}/artifacts/
-        ls -al "${GITHUB_WORKSPACE}/artifacts/${PKG_NAME}_${{ steps.environment_step.outputs.VERSION }}-1${{ steps.environment_step.outputs.PRERELEASE_TAG }}+$(lsb_release -c -s)1_amd64.deb"
+        ls -al "${GITHUB_WORKSPACE}/artifacts/${PKG_NAME}_${{ needs.setup_environment.outputs.VERSION }}-1${{ needs.setup_environment.outputs.PRERELEASE_TAG }}+$(lsb_release -c -s)1_amd64.deb"
 
-        cd linux
+        cd ${{ github.workspace }}/keyman/linux
         ./scripts/deb-packaging.sh \
           --gha \
-          --bin-pkg "${GITHUB_WORKSPACE}/artifacts/${PKG_NAME}_${{ steps.environment_step.outputs.VERSION }}-1${{ steps.environment_step.outputs.PRERELEASE_TAG }}+$(lsb_release -c -s)1_amd64.deb" \
-          --git-sha "${{ steps.environment_step.outputs.GIT_SHA }}" \
-          --git-base "${{ steps.environment_step.outputs.GIT_BASE }}" \
+          --bin-pkg "${GITHUB_WORKSPACE}/artifacts/${PKG_NAME}_${{ needs.setup_environment.outputs.VERSION }}-1${{ needs.setup_environment.outputs.PRERELEASE_TAG }}+$(lsb_release -c -s)1_amd64.deb" \
+          --git-sha "${{ needs.setup_environment.outputs.GIT_SHA }}" \
+          --git-base "${{ needs.setup_environment.outputs.GIT_BASE }}" \
           verify 2>> $GITHUB_STEP_SUMMARY
 
     - name: Archive .symbols file
       uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
       with:
         name: libkeymancore.symbols
-        path: linux/debian/tmp/DEBIAN/symbols
+        path: ${{ github.workspace }}/keyman/linux/debian/tmp/DEBIAN/symbols
       if: always()
 
   set_status:
     name: Set result status on PR builds
-    needs: [api_verification]
+    needs: [setup_environment, api_verification]
     runs-on: ubuntu-latest
-    if: ${{ always() && needs.api_verification.outputs.IS_TEST_BUILD == 'true' }}
+    if: ${{ always() && needs.setup_environment.outputs.IS_TEST_BUILD == 'true' }}
     steps:
     - name: Set success
     # TEMP commented until things are working!
@@ -120,7 +126,7 @@ jobs:
         gh api \
           --method POST \
           -H "Accept: application/vnd.github+json" \
-          /repos/$GITHUB_REPOSITORY/statuses/${{ needs.api_verification.outputs.GIT_SHA }} \
+          /repos/$GITHUB_REPOSITORY/statuses/${{ needs.setup_environment.outputs.GIT_SHA }} \
           -f state="$RESULT" \
           -f target_url="$GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID" \
           -f description="$MSG" \