UNSOLVED Clickable can't install dependencies for native app

Semp

Device: Nexus 5
Host: Ubuntu 20.04

I'm currently trying to port an existing C++ application (namingly, SuperTux) to Ubuntu Touch.

I managed to get clickable to compile on desktop properly; however, when testing on my phone, clickable fails to install the dependencies:

...
(Reading database ... 52898 files and directories currently installed.)
Removing python-minimal (2.7.12-1~16.04) ...
Processing triggers for man-db (2.7.5-1) ...
Selecting previously unselected package python-minimal:armhf.
(Reading database ... 52872 files and directories currently installed.)
Preparing to unpack .../python-minimal_2.7.12-1~16.04_armhf.deb ...
Unpacking python-minimal:armhf (2.7.12-1~16.04) ...
Processing triggers for man-db (2.7.5-1) ...
dpkg: python: dependency problems, but removing anyway as you requested:
 libglib2.0-dev:armhf depends on python:any (>= 2.6.6-7~).
 google-mock:armhf depends on python:any.

(Reading database ... 52898 files and directories currently installed.)
Removing python (2.7.12-1~16.04) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up python2.7-minimal:armhf (2.7.12-1ubuntu0~16.04.13) ...
/usr/bin/python2.7: 1: /usr/bin/python2.7: Syntax error: word unexpected (expecting ")")
dpkg: error processing package python2.7-minimal:armhf (--configure):
 subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of python-minimal:armhf:
 python-minimal:armhf depends on python2.7-minimal (>= 2.7.12-1~); however:
  Package python2.7-minimal:armhf is not configured yet.

dpkg: error processing package python-minimal:armhf (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 python2.7-minimal:armhf
 python-minimal:armhf
W: --force-yes is deprecated, use one of the options starting with --allow instead.
E: Sub-process /usr/bin/dpkg returned an error code (1)
The command '/bin/sh -c apt-get update && apt-get install -y --force-yes --no-install-recommends libogg-dev:armhf libvorbis-dev:armhf libopenal-dev:armhf libboost-all-dev:armhf libsdl2-dev:armhf libsdl2-image-dev:armhf libfreetype6-dev:armhf libcurl4-openssl-dev:armhf libglew-dev:armhf libharfbuzz-dev:armhf libfribidi-dev:armhf && apt-get clean' returned a non-zero code: 100
Command exited with non-zero exit status 100, see above for details. This is most likely not a problem with Clickable.

My clickable.json file is this:

{
  "builder": "cmake",
  "dependencies_target": [
    "libogg-dev",
    "libvorbis-dev",
    "libopenal-dev",
    "libboost-all-dev",
    "libsdl2-dev",
    "libsdl2-image-dev",
    "libfreetype6-dev",
    "libcurl4-openssl-dev",
    "libglew-dev",
    "libharfbuzz-dev",
    "libfribidi-dev"
  ]
}

(If needed, I can provide the exact steps to reproduce my build, including a git patch)

How should I proceed to fix this problem?