Calculating dependencies /

!!! Problem resolving dependencies for mail-client/mutt from @selected                                                                                                                                                                      ... done!

!!! The ebuild selected to satisfy "mail-client/mutt" has unmet requirements.
- mail-client/mutt-1.7.2-r2::gentoo USE="berkdb crypt gdbm hcache imap mbox nls sasl smtp ssl -debug -doc (-gnutls) -gpg -idn -kerberos -libressl -lmdb -nntp -notmuch -pop -qdbm (-selinux) -sidebar -slang -smime -tokyocabinet -vanilla"

  The following REQUIRED_USE flag constraints are unsatisfied:
    hcache? ( exactly-one-of ( berkdb gdbm lmdb qdbm tokyocabinet ) )

  The above constraints are a subset of the following complete expression:
    hcache? ( exactly-one-of ( berkdb gdbm lmdb qdbm tokyocabinet ) ) imap? ( exactly-one-of ( ssl gnutls libressl ) ) pop? ( exactly-one-of ( ssl gnutls libressl ) ) nntp? ( exactly-one-of ( ssl gnutls libressl ) ) smime? ( exactly-one-of ( ssl libressl ) ) smtp? ( exactly-one-of ( ssl gnutls libressl ) ) sasl? ( any-of ( imap pop smtp nntp ) ) kerberos? ( any-of ( imap pop smtp nntp ) )

(dependency required by "@selected" [set])
(dependency required by "@world" [argument])
workstation ~ #