Dear SCO Customer,

Support Level Supplement (SLS) PTF7068C, the Package Installation Supplement 
for UnixWare 7.0.0 and 7.0.1, delivers full support for incompatibility 
definitions between pkgadd format supplements. 

The checking of incompatibility definitions specified in 'depend' files was 
previously performed only for the package being installed.  This checking 
function has been extended to include re-checking of the 'depend' definitions 
for packages already installed on the system. Any packages declaring an 
incompatibility with the package being installed will cause the installation 
to terminate.


These changes to the "checking flags" are included in PTF7068C:

1. Added the 'S' flag (Supersedes) to support superseding packages.

2. Added the 'X' flag (eXcludes) to support genuinely incompatible
   packages. That is, the presence of a package declaring this flag 
   will prevent the corresponding package being installed, regardless 
   of the dependencies specified in that package.

   The 'X' flag allows new incompatibilities with released packages to
   be managed effectively.

3. Restored the original 'I' flag behaviors for packages other than
   PTFs.


SLS PTF7068C contains these files:

        /usr/sadm/install/bin/pkginstall
        /usr/sadm/install/bin/pkgremove
        /usr/sbin/pkgrm


Software Notes and Recommendations
----------------------------------

SLS PTF7068C should only be installed on:

        UnixWare 7.0.0 with the UnixWare 7 Release Supplement (uw7rs)
        UnixWare 7.0.1


Installation Instructions
-------------------------

1. Download the ptf7068c.Z file to the /tmp directory on your machine.

2. As root, uncompress the file and add the SLS package to your system
   using these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7068c.Z
        # pkgadd -d /tmp/ptf7068c
        # rm /tmp/ptf7068c

3. There is no need to reboot the system after installing this SLS.

The release notes displayed prior to installation can be found in:

        /var/sadm/pkg/ptf7068/install/ptf7068.txt


Removal Instructions
--------------------

1. As root, remove the SLS package using these commands:

        $ su
        Password: <type your root password>
        # pkgrm ptf7068

2. There is no need to reboot the system after removing this SLS package.

If you have questions regarding this SLS, or the product on which
it is installed, please contact your software supplier.