Fixes: <https://bugs.gnu.org/32478>. * gnu/services/security-token.scm (pcscd-activation): Idempotently create the /var/lib/pcsc symlink so that it does not fail when it already exists.
* gnu/services/security-token.scm: New file. * gnu/tests/security-token.scm: New file. * gnu/local.mk (GNU_SYSTEM_MODULES): Register new files. * doc/guix.texi (Miscellaneous Services): Document the service.