add: provides('duplicity')

The package provides duplicity. Packages relying on duplicity, such as
deja-dup and duply work fine with the bzr version, but could not be
installed otherwise.

.SRCINFO

@@ -19,6 +19,7 @@ pkgbase = duplicity-bzr
 	optdepends = python2-httplib2: Ubuntu One backend
 	optdepends = python2-oauthlib: Ubuntu One backend
 	optdepends = rsync: rsync backend
+	provides = duplicity
 	conflicts = duplicity
 	source = bzr+lp:duplicity
 	sha512sums = SKIP

PKGBUILD

@@ -30,6 +30,7 @@ sha512sums=('SKIP')
 #_bzrtrunk='https://code.launchpad.net/~duplicity-team/duplicity/trunk'
 #_bzrmod=${pkgname}
 conflicts=("${pkgname//-bzr/}")
+provides=('duplicity')
 
 pkgver() {
   cd "${srcdir}/${pkgname//-bzr/}"