[yocto] Task Build Issue

[Rudolf Streif]

I created this task for test purposes:

DESCRIPTION = "My Custom Tasks"

LICENSE = "MIT"
LIC_FILES_CHKSUM =
"file://${COREBASE}/LICENSE;md5=3f40d7994397109285ec7b81fdeb3b58 \

file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"

PACKAGES = "\
    task-mytask-apps \
    task-mytask-apps-dbg \
    task-mytask-apps-dev \
    task-mytask-tools \
    task-mytask-tools-dbg \
    task-mytask-tools-dev \
    "

RDEPENDS_task-mytask-apps = "\
   sqlite3 \
   python \
   python-sqlite3"

RDEPENDS_task-mytask-tools = "\
   sudo \
   gzip \
   tar"

I added created a bb containing IMAGE_INSTALL = "task-core-boot
task-base-extended task-mytask-apps"

Bitbake builds the task without any error message. However, building
the rootfs fails with

| Processing task-mytask-apps...
| Unable to find package task-mytask-apps (task-mytask-apps)!

log.do_package_write_rpm: contains NOTE: Not creating empty RPM
package for task-mytask-apps.

Indeed deploy-rpms of the package is empty however, the deploy-rpms
dirs of the dependencies contain the necessary packages.

Any help is appreciated.

Thanks,
Rudi