$> sudo dpkg -i *.deb

$> sudo dpkg -i libindi1_1.7.3_armhf.deb indi-dbg_1.7.3_armhf.deb libindi-dev_1.7.3_armhf.deb
dpkg: considering removing libindi-plugins:armhf in favour of libindi1:armhf ...
dpkg: no, cannot proceed with removal of libindi-plugins:armhf (--auto-deconfigure will help):
 libindialignmentdriver1:armhf depends on libindi-plugins (= 1.2.0-3)
  libindi-plugins:armhf is to be removed.
 
dpkg: regarding libindi1_1.7.3_armhf.deb containing libindi1:armhf:
 libindi1:armhf conflicts with libindi-plugins
  libindi-plugins:armhf (version 1.2.0-3) is present and installed.
 
dpkg: error processing archive libindi1_1.7.3_armhf.deb (--install):
 conflicting packages - not installing libindi1:armhf
(Reading database ... 154588 files and directories currently installed.)
Preparing to unpack indi-dbg_1.7.3_armhf.deb ...
Unpacking indi-dbg (1.7.3) over (1.7.3) ...
Preparing to unpack libindi-dev_1.7.3_armhf.deb ...
Unpacking libindi-dev (1.7.3) over (1.7.3) ...
dpkg: dependency problems prevent configuration of indi-dbg:
 indi-dbg depends on libindi1 (= 1.7.3); however:
  Version of libindi1:armhf on system is 1.2.0-3.
 
dpkg: error processing package indi-dbg (--install):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libindi-dev:
 libindi-dev depends on libindi1 (= 1.7.3); however:
  Version of libindi1:armhf on system is 1.2.0-3.
 
dpkg: error processing package libindi-dev (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 libindi1_1.7.3_armhf.deb
 indi-dbg
 libindi-dev

$> sudo dpkg --force-all -i libindi1_1.7.3_armhf.deb indi-dbg_1.7.3_armhf.deb libindi-dev_1.7.3_armhf.deb