Experimental Physics and
Industrial Control System

Maren Purves via Tech-talk <[email protected]> · Thu, 9 Jan 2020 12:43:41 -1000

On 2020-01-09 12:01, J. Lewis Muir via Tech-talk wrote:

A secondary motivation for API and ABI compatibility is to make the
upgrade process easier.  If EPICS and all of the EPICS modules cared
about API and ABI compatibility, I suspect they would not break it as
often, and I think this would result in an easier time upgrading EPICS
and EPICS modules in that I wouldn't have to change as much source code
for API changes, and I would have a better chance of avoiding so-called
"dependency hell."

Trying to upgrade from 3.13.8 to 3.15.6 I got stuck so many times that

the upgrade eventually fell by the wayside (at least for now - ahem, the

past year or so) - we are STILL running 3.13.8.

(It doesn't help that since that upgrade to 3.13.8 the available effort

shrunk from about 7 people to about 2 1/2)

FWIW,
Maren Purves
East Asian Observatory

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System