build: use environment variables to configure pip

Otherwise, it may or may not work depending on the version of pip...

diff --git a/tests/ci/install.sh b/tests/ci/install.sh
index 3c15b70fc42c57d747cafa825158f4204bfa810b..67e93a3ec8a5b1902c3a151e232c50068fb5c6d6 100755 (executable)
--- a/tests/ci/install.sh
+++ b/tests/ci/install.sh
@@ -43,6 +43,7 @@ EOS
             snmpd snmp \
             python3-pip python3-setuptools python3-wheel
         # For integration tests
-        sudo -H $(which python3) -m pip install -r tests/integration/requirements.txt --break-system-packages
+        sudo -H env PIP_BREAK_SYSTEM_PACKAGES=1 \
+            $(which python3) -m pip install -r tests/integration/requirements.txt
         ;;
 esac