Alienbob has the packages that include the generic drivers to use the Epson printers build from the source that Epson makes available. So for almost all Epson printers and scanners it should be a matter of installing those packages instead of the approach you take here. Note that it looks like the L210 also uses the generic driver.

btw) also the network plugin and scanner driver can be found there and for me make that my WF-3520 works completely under Slackware.