Installer should transfer HTTP network proxy properties from live system to installed system for APT

[N0rbert]

In previous installer named Ubiquity the following functionality existed for years:

1. User boots the LiveCD system in Try Ubuntu mode

2. User sets http_proxy using gnome-control-center network (in case of Ubuntu) as shown below

   

3. User launches installer and waits it to complete, checks proxy setting on /target fs:

   $ grep -r 222 /target/etc/apt/
   /target/etc/apt/apt.conf:Acquire::http::Proxy "http://192.168.3.222:8000/";

4. User login into just installed fresh system and sees the proxy defined in the corresponded configuration file of APT

   $ grep -r 222 /etc/apt/
   /etc/apt/apt.conf:Acquire::http::Proxy "http://192.168.3.222:8000/";

New modern misses this very useful feature. Please implement it.

[oSoMoN]

Relevant code in ubiquity:

• https://git.launchpad.net/ubiquity/tree/ubiquity/components/apt_setup.py
• https://git.launchpad.net/ubiquity/tree/scripts/apt-setup
• https://git.launchpad.net/ubiquity/tree/d-i/source/apt-setup/apt-setup

subiquity does have a proxy endpoint, which seems to be used to configure apt, so maybe it's simply a matter of setting it from u-d-i ?