debian9解决依赖问题

安装aptitude工具

apt-get install aptitude

提示：libssl-dev : Depends: libssl1.1 (= 1.1.0k-1~deb9u1) but 1.1.0l-1~deb9u1 is to be installed
比如解决libssl-dev，

aptitude install libssl-dev


The following NEW packages will be installed:
  libssl-dev{b} libssl-doc{a} 
0 packages upgraded, 2 newly installed, 0 to remove and 12 not upgraded.
Need to get 2,755 kB of archives. After unpacking 6,426 kB will be used.
The following packages have unmet dependencies:
 libssl-dev : Depends: libssl1.0.0 (= 1.0.1t-1+deb7u2) but 1.0.1t-1+deb8u6 is installed.
The following actions will resolve these dependencies:
 
     Keep the following packages at their current version:
1)     libssl-dev [Not Installed]                         
 
 
 
Accept this solution? [Y/n/q/?] n
The following actions will resolve these dependencies:
 
     Downgrade the following packages:                                      
1)     libssl1.0.0 [1.0.1t-1+deb8u6 (now) -> 1.0.1t-1+deb7u2 (oldoldstable)]
 
 
 
Accept this solution? [Y/n/q/?] y
The following packages will be DOWNGRADED:
  libssl1.0.0 
The following NEW packages will be installed:
  libssl-dev libssl-doc{a} 
0 packages upgraded, 2 newly installed, 1 downgraded, 0 to remove and 12 not upgraded.
Need to get 3,825 kB of archives. After unpacking 6,420 kB will be used.
Do you want to continue? [Y/n/?] y
Get: 1 http://mirrors.aliyun.com/raspbian/raspbian/ wheezy/main libssl1.0.0 armhf 1.0.1t-1+deb7u2 [1,070 kB]
Get: 2 http://mirrors.aliyun.com/raspbian/raspbian/ wheezy/main libssl-dev armhf 1.0.1t-1+deb7u2 [1,528 kB]
Get: 3 http://mirrors.aliyun.com/raspbian/raspbian/ wheezy/main libssl-doc all 1.0.1t-1+deb7u2 [1,227 kB]
Fetched 3,825 kB in 5s (753 kB/s)     
Preconfiguring packages ...
dpkg: warning: downgrading libssl1.0.0:armhf from 1.0.1t-1+deb8u6 to 1.0.1t-1+deb7u2
(Reading database ... 115760 files and directories currently installed.)
Preparing to unpack .../libssl1.0.0_1.0.1t-1+deb7u2_armhf.deb ...
Unpacking libssl1.0.0:armhf (1.0.1t-1+deb7u2) over (1.0.1t-1+deb8u6) ...
Selecting previously unselected package libssl-dev.
Preparing to unpack .../libssl-dev_1.0.1t-1+deb7u2_armhf.deb ...
Unpacking libssl-dev (1.0.1t-1+deb7u2) ...
Selecting previously unselected package libssl-doc.
Preparing to unpack .../libssl-doc_1.0.1t-1+deb7u2_all.deb ...
Unpacking libssl-doc (1.0.1t-1+deb7u2) ...
Processing triggers for man-db (2.7.5-1~bpo8+1) ...
Setting up libssl1.0.0:armhf (1.0.1t-1+deb7u2) ...
Setting up libssl-dev (1.0.1t-1+deb7u2) ...
Setting up libssl-doc (1.0.1t-1+deb7u2) ...
Processing triggers for libc-bin (2.19-18+deb8u10) ...