There is a discussion here about similar problems with updating nodes.
They seem to suggest that deleting the file / folder - in your case /home/pi/.node-red/node_modules/detect-libc ? will let you successfully install.
It's not a very helpful error message though, does it mean rename it to .detect-libc-pGdKpy0q or does the -> mean something else?
Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
The OpenJS Foundation | Terms of Use | Privacy Policy | OpenJS Foundation Bylaws | Trademark Policy | Trademark List | Cookie Policy