Having the same issue while installing on ubuntu 20.04 and using your repositories.
I did try to use the DEB packages directly too but it also failed with dependencies issues
sudo dpkg -i mailpile*
Selecting previously unselected package mailpile.
(Reading database … 72508 files and directories currently installed.)
Preparing to unpack mailpile_0.99.6~1.0202006221945-1_all.deb …
Unpacking mailpile (0.99.6~1.0202006221945-1) …
Preparing to unpack mailpile_0.99.6~dev202007020316-1_all.deb …
Unpacking mailpile (0.99.6~dev202007020316-1) over (0.99.6~1.0202006221945-1) …
Selecting previously unselected package mailpile-apache2.
Preparing to unpack mailpile-apache2_0.99.6~1.0202006221945-1_all.deb …
Unpacking mailpile-apache2 (0.99.6~1.0202006221945-1) …
Preparing to unpack mailpile-apache2_0.99.6~dev202007020316-1_all.deb …
Unpacking mailpile-apache2 (0.99.6~dev202007020316-1) over (0.99.6~1.0202006221945-1) …
Selecting previously unselected package mailpile-desktop.
Preparing to unpack mailpile-desktop_0.99.6~1.0202006221945-1_all.deb …
Unpacking mailpile-desktop (0.99.6~1.0202006221945-1) …
Preparing to unpack mailpile-desktop_0.99.6~dev202007020316-1_all.deb …
Unpacking mailpile-desktop (0.99.6~dev202007020316-1) over (0.99.6~1.0202006221945-1) …
More than one copy of package mailpile has been unpacked
in this run ! Only configuring it once.
More than one copy of package mailpile-apache2 has been unpacked
in this run ! Only configuring it once.
More than one copy of package mailpile-desktop has been unpacked
in this run ! Only configuring it once.
dpkg: dependency problems prevent configuration of mailpile:
mailpile depends on spambayes; however:
Package spambayes is not installed.
mailpile depends on python (<< 2.8); however:
Package python is not installed.
mailpile depends on python (>= 2.7.5); however:
Package python is not installed.
mailpile depends on python-lxml; however:
Package python-lxml is not installed.
mailpile depends on python-jinja2; however:
Package python-jinja2 is not installed.
mailpile depends on python-appdirs; however:
Package python-appdirs is not installed.
mailpile depends on python-cryptography; however:
Package python-cryptography is not installed.
mailpile depends on python-dns; however:
Package python-dns is not installed.
mailpile depends on python-fasteners; however:
Package python-fasteners is not installed.
mailpile depends on python-imgsize; however:
Package python-imgsize is not installed.
mailpile depends on python-markupsafe; however:
Package python-markupsafe is not installed.
mailpile depends on python-pgpdump; however:
Package python-pgpdump is not installed.
mailpile depends on python-pil; however:
Package python-pil is not installed.
mailpile depends on python-icalendar; however:
Package python-icalendar is not installed.
mailpile depends on python-socksipychain; however:
Package python-socksipychain is not installed.
dpkg: error processing package mailpile (–install):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of mailpile-apache2:
mailpile-apache2 depends on mailpile; however:
Package mailpile is not configured yet.
mailpile-apache2 depends on apache2; however:
Package apache2 is not installed.
mailpile-apache2 depends on python; however:
Package python is not installed.
mailpile-apache2 depends on net-tools; however:
Package net-tools is not installed.
dpkg: error processing package mailpile-apache2 (–install):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of mailpile-desktop:
mailpile-desktop depends on mailpile; however:
Package mailpile is not configured yet.
mailpile-desktop depends on python; however:
Package python is not installed.
mailpile-desktop depends on python-gui-o-matic; however:
Package python-gui-o-matic is not installed.
dpkg: error processing package mailpile-desktop (–install):
dependency problems - leaving unconfigured
Processing triggers for man-db (2.9.1-1) …
Processing triggers for mime-support (3.64ubuntu1) …
Errors were encountered while processing:
mailpile
mailpile-apache2
mailpile-desktop
did “Sudo apt install -f” afterwards, got some updates for packages but same error afterwards.
“væri gaman að sjá þetta ganga upp”