How do I fix the WP 8.x installers failures resulting from errors copying files onto my NFS network drive?
You’re probably using one of the personal editions of WP 8.x. Only the server editions include code required to enable support of NFS file locking (which in server editions you can enable via the WPadmin login facility). Otherwise, neither the installer nor the WP program binary will run if any components are on (or will be installed to) any NFS mounted drive, including user settings in users’ home directories and temporary files in /tmp.