Ubuntu 16.04安装搜狗拼音输入法错误问题的解决方法
一、环境介绍
Ubuntu 16.04
搜狗输入法： sogoupinyin_2.0.0.0078_amd64
二、问题表现
sudo dpkg -i sogoupinyin_2.0.0.0078_amd64.deb
错误信息如下：
sogoupinyin : Depends: libopencc2 but it is not installable or libopencc1 but it is not going to be installed Depends: fcitx-libs (>= 4.2.7) but it is not going to be installed Depends: fcitx-libs-qt (>= 4.2.7) but it is not going to be installed Recommends: fonts-droid-fallback but it is not going to be installed or fonts-droid but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
一看就知道是依赖包存在问题
三、问题分析
之前在Ubuntu 15.10的版本之时，使用同样的sogou版本，不存在此类的问题。 但是在Ubuntu 16.04中，却存在此类问题，说明Ubuntu升级之后，sogou输入法并未做相应的系统兼容性测试， 故起最高的Ubuntu支持版本时15.10.
虽然我们知道了问题，但是该如何解决呢？
基于错误信息，我们发现起依赖包有以下几个： libopencc1 libopencc2, fcitx-libs, fcitx-libs-qt font-droid-fallback.
四、试错分析
试错1：
bladestone@bladestone-laptop:~$ sudo apt install fcitx-libs Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: sogoupinyin : Depends: libopencc2 but it is not installable or libopencc1 but it is not going to be installed Depends: fcitx-libs-qt (>= 4.2.7) but it is not going to be installed Recommends: fonts-droid-fallback but it is not going to be installed or fonts-droid but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
试错2：
bladestone@bladestone-laptop:~$ sudo apt install fcitx-libs-qt Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: sogoupinyin : Depends: libopencc2 but it is not installable or libopencc1 but it is not going to be installed Depends: fcitx-libs (>= 4.2.7) but it is not going to be installed Recommends: fonts-droid-fallback but it is not going to be installed or fonts-droid but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
试错3：
bladestone@bladestone-laptop:~$ sudo apt install fcitx-libs-qt fcitx-libs Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: sogoupinyin : Depends: libopencc2 but it is not installable or libopencc1 but it is not going to be installed Recommends: fonts-droid-fallback but it is not going to be installed or fonts-droid but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
试错4：
bladestone@bladestone-laptop:~$ sudo apt install fonts-droid-fallback Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: sogoupinyin : Depends: libopencc2 but it is not installable or libopencc1 but it is not going to be installed Depends: fcitx-libs (>= 4.2.7) but it is not going to be installed Depends: fcitx-libs-qt (>= 4.2.7) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
试错5：
bladestone@bladestone-laptop:~$ sudo apt install libopencc1 Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: sogoupinyin : Depends: fcitx-libs (>= 4.2.7) but it is not going to be installed Depends: fcitx-libs-qt (>= 4.2.7) but it is not going to be installed Recommends: fonts-droid-fallback but it is not going to be installed or fonts-droid but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
分析： 经过各种尝试，发现依然无法正常解决问题，类库包之间的依赖关系还是非常复杂的。
五、问题解决
5.1 移除sogou输入法， 由于其安装不完整
sudo apt remove sogoupinyin
执行过程：
Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: sogoupinyin 0 upgraded, 0 newly installed, 1 to remove and 43 not upgraded. 1 not fully installed or removed. After this operation, 42.6 MB disk space will be freed. Do you want to continue? [Y/n] y (Reading database ... 214444 files and directories currently installed.) Removing sogoupinyin (2.0.0.0078) ... Processing triggers for libglib2.0-0:amd64 (2.48.1-1~ubuntu16.04.1) ... Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ... Processing triggers for shared-mime-info (1.5-2ubuntu0.1) ... Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160523-0ubuntu1) ... Rebuilding /usr/share/applications/bamf-2.index... Processing triggers for gnome-menus (3.13.3-6ubuntu3) ... Processing triggers for desktop-file-utils (0.22-1ubuntu5) ... Processing triggers for mime-support (3.59ubuntu1) ...
5.2 正确的包安装姿势
sudo apt install libopencc1 fcitx-libs fcitx-libs-qt fonts-droid-fallback
5.3 重新安装sogou输入法
sudo dpkg -i sogoupinyin_2.0.0.0078_amd64.deb
结果 一切顺利，没有报类似的错误信息
总结
安装依赖需要一次安装完成，切勿单个安装，主要是由于包之间彼此会有一定的依赖关系，这个是你无法准确定位的，故在 一次安装动作中做完。
另外需要注意的是： sogou输入法的Linux版本目前只兼容到Ubunut 15.10， 请大家彼此周知该情况。
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