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Ubuntu Server Installer, and backend for Ubuntu Desktop Installer
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I wanted this so I can enable/disable options after creating the widget.
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README.md

subiquity

Ubuntu Server Installer

Acquire subiquity from source

git clone https://github.com/CanonicalLtd/subiquity

cd subiquity && make install_deps

Testing out the Text-UI (TUI)

SUbiquity's text UI is is available for testing without actually installing anything to a system or a VM. Subiquity developers make use of this for rapid development. After checking out subiquity you can start it:

make dryrun

All of the features are present in dry-run mode. The installer will emit its backend configuration files to /tmp/subiquity-config-* but it won't attempt to run any installer commands (which would fail without root privileges). Further, subiquity can load other machine profiles in case you want to test out the installer without having access to the machine. A few sample machine profiles are available in the repository at ./examples/ and can be loaded via the MACHINE make variable:

make dryrun MACHINE=examples/desktop.json

Generating machine profiles

Machine profiles are generated from the probert tool. To collect a machine profile:

PYTHONPATH=probert ./probert/bin/probert --all > mymachine.json

Testing changes in KVM

To try out your changes for real, it is necessary to install them into an ISO. Rather than building one from scratch, it's much easier to install your version of subiquity into the daily image. Here's how to do this:

  1. Build your change into a snap:

    $ snapcraft snap --output subiquity_test.snap

  2. Grab the current version of the installer:

    $ urlbase=http://cdimage.ubuntu.com/ubuntu-server/daily-live/current
$ isoname=$(distro-info -d)-live-$(dpkg --print-architecture).iso
$ zsync ${urlbase}/${isoname}.zsync

  3. Run the provided script to make a copy of the downloaded installer that has your version of subiquity:

    $ sudo ./scripts/inject-subiquity-snap.sh ${isoname} subiquity_test.snap custom.iso

  4. Boot the new iso in KVM:

    $ qemu-img create -f raw target.img 10G
$ kvm -m 1024 -cdrom custom.iso -hda target.img -serial stdio

  5. Finally, boot the installed image:

    $ kvm -m 1024 -hda target.img -serial stdio

The first three steps are bundled into the script ./scripts/test-this-branch.sh.