break-system-packages isn't always available

Author: williamstein

src/package.json

@@ -13,7 +13,7 @@
     "psql": "export PGHOST=${PGHOST:=$INIT_CWD/data/postgres/socket}; PGUSER='smc' psql",
     "database": "cd dev/project && ./start_postgres.py",
     "c": "LOGS=/tmp/ DEBUG='cocalc:*' ./scripts/c",
-    "version-check": "pip3 install --break-system-packages typing_extensions mypy && ./workspaces.py version-check && mypy scripts/check_npm_packages.py",
+    "version-check": "pip3 install typing_extensions mypy  || pip3 install --break-system-packages typing_extensions mypy && ./workspaces.py version-check && mypy scripts/check_npm_packages.py",
     "test-parallel": "unset DEBUG && pnpm run version-check && cd packages && pnpm run -r --parallel test",
     "test": "unset DEBUG && pnpm run version-check && cd packages && pnpm run -r test",
     "prettier-all": "cd packages/"