Use extra step for setting up venv

Author: Flamefire

.github/workflows/synchronize-launchpad.yml

@@ -16,22 +16,26 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-      - name: Install dependencies
+
+      - name: Setup virtualenv
         run: |
           venv_dir="/tmp/venv"
           python -m venv "$venv_dir"
-          . $venv_dir/bin/activate
-          echo "VIRTUAL_ENV=$VIRTUAL_ENV" >> "$GITHUB_ENV"
+          echo "VIRTUAL_ENV=$venv_dir" >> "$GITHUB_ENV"
           echo "$venv_dir/bin" >> "$GITHUB_PATH"
+
+      - name: Install breezy
+        run: |
+          which pip && which python
           pip install --upgrade pip
+          pip list
           pip install Cython configobj
           pip install 'breezy[fastimport,git,launchpad]<3.3'  # 3.3+ requires interactive login
-          fastimport_dir=$venv_dir/lib/python*/site-packages/breezy/plugins/fastimport
+          fastimport_dir=$VIRTUAL_ENV/lib/python*/site-packages/breezy/plugins/fastimport
           # Add missing import and use binary buffer of stdin for Python3 compat
           sed -i '1 i from breezy import controldir' $fastimport_dir/branch_updater.py
           sed -i 's/helpers.binary_stream(sys.stdin)/sys.stdin.buffer/' $fastimport_dir/cmds.py
 
-
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0