我正在尝试使用以下命令安装tortoiseHG：
$ sudo dpkg -i tortoisehg_4.8.1-0.1_all.deb
Selecting previously unselected package tortoisehg.
(Reading database ... 172882 files and directories currently installed.)
Preparing to unpack tortoisehg_4.8.1-0.1_all.deb ...
Unpacking tortoisehg (4.8.1-0.1) ...
dpkg: dependency problems prevent configuration of tortoisehg:
tortoisehg depends on mercurial (<< 4.9~); however:
Version of mercurial on system is 5.3.2-1+exp1.
tortoisehg depends on python-pyqt5; however:
Package python-pyqt5 is not installed.
tortoisehg depends on python-pyqt5.qsci; however:
Package python-pyqt5.qsci is not installed.
tortoisehg depends on python:any (<< 2.8); however:
tortoisehg …