Fix for pkg+freebsd10-stable

gistfile1.diff

diff --git a/nanobsd/common b/nanobsd/common
index dc7c0a4..f7da3d4 100644
--- a/nanobsd/common
+++ b/nanobsd/common
@@ -291,7 +291,11 @@ do_add_pkg ()
        mount -t nullfs -o noatime ${NANO_OBJ}/ports/packages \
                ${NANO_WORLDDIR}/usr/ports/packages
 
-       CR "cd /usr/ports/packages/All;env SIGNATURE_TYPE=none pkg add -f $1.txz && touch $1.txz.added "
+       local delete_it=true
+       if echo $1 | egrep -q '^pkg-[0-9._]+' ; then
+           delete_it=false
+       fi
+       CR "cd /usr/ports/packages/All; ${delete_it} && pkg info $1 && pkg remove -fy $1; env SIGNATURE_TYPE=none pkg add $1.txz && touch $1.txz.added "
        set -e
        umount -f ${NANO_WORLDDIR}/usr/ports/packages
        rmdir ${NANO_WORLDDIR}/usr/ports/packages/All