So, further debugging on this issue has revealed that the "try_install" section isn't installing anything within the newly installed system. I changed "try_install" to "install", which resulted in an installer crash. Further debugging revealed that it was likely due to apt-get's inability to find the requested packages.
I chroot'd into the installation and tried to run "apt-get update", which failed due to network problems. I copied resolv.conf from the live session into the installation, then chroot'd and tried apt-get update again, and while it was able to download the database updates, it gave me a lot of errors related to GPG and the inability to create /dev/null, so the database never updated.
I'm thinking this should probably be moved to being a calamares bug, since a core feature of the installer is failing entirely, and its resolution should also fix this bug.
So, further debugging on this issue has revealed that the "try_install" section isn't installing anything within the newly installed system. I changed "try_install" to "install", which resulted in an installer crash. Further debugging revealed that it was likely due to apt-get's inability to find the requested packages.
I chroot'd into the installation and tried to run "apt-get update", which failed due to network problems. I copied resolv.conf from the live session into the installation, then chroot'd and tried apt-get update again, and while it was able to download the database updates, it gave me a lot of errors related to GPG and the inability to create /dev/null, so the database never updated.
I'm thinking this should probably be moved to being a calamares bug, since a core feature of the installer is failing entirely, and its resolution should also fix this bug.