I wonder if the reason this not present is that you are basically forced to use another Build Specification to populate your NI Package. I am not sure what I would use pre-build action for, but I could definitely see the post-build being helpful (copy package to another location, register to an additional NIPM feed, email the world of your new amazing improvements)
__________________________________ Bill Eisenhower Certified LabVIEW & TestStand Developer
Having pre and post build steps also allows us to specify where the ni package is located and referenced by the feed. As of 2021, when the Add to Feed option is checked in the build spec, the package is always placed in the same directory as the feed. I have a different preference on where packages are located relative to the feed.