Package: apt
Version: apt 1.0.1ubuntu2 for amd64 compiled on Apr 12 2018 10:14:36


This is a much needed feature request but your Web site was totally unclear how 
to submit a feature request. apt upgrade needs some kind of limit or cap like:


sudo apt upgrade -asof=20180723


This is particularly necessary in the world of medical device developers and 
any other regulated industry where "Work Instructions" get filed with 
regulatory bodies on how to create, from scratch, a development environment. 
Many times these instructions say to install an LTS Debian based distro then


sudo apt update

sudo apt upgrade


The problem is, the repos have moved content wise since then and some update 
breaks the environment. A fantastic example as of today is the GUI software 
installer with Ubuntu 18.04 LTS. With a raw install of 18.04 you can copy in a 
.deb and use the GUI to install it. After applying all updates it no longer 
works.


The regulated world needs an "asof" qualifier so developer environments can be 
100% recreatable without having to build an environment, disable apt, then make 
an ISO of said environment just so it can be reproducable.




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