我应该如何为 Ubuntu 16.04 安装 libunicapgtk2-dev？
mona@Mona:~/unicap-0.9.5$ sudo apt-get update
Get:1 file:/var/nvinfer-runtime-trt-repo-3.0.4-ga-cuda9.0 InRelease
Ign:1 file:/var/nvinfer-runtime-trt-repo-3.0.4-ga-cuda9.0 InRelease
Get:2 file:/var/nvinfer-runtime-trt-repo-3.0.4-ga-cuda9.0 Release [574 B]
Get:2 file:/var/nvinfer-runtime-trt-repo-3.0.4-ga-cuda9.0 Release [574 B]
Hit:4 http://ppa.launchpad.net/otto-kesselgulasch/gimp/ubuntu xenial InRelease
Hit:5 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:6 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]
Hit:7 https://packages.microsoft.com/repos/vscode stable InRelease
Get:8 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB]
Get:9 http://archive.ubuntu.com/ubuntu xenial-security InRelease [107 kB]
Get:10 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 DEP-11 Metadata [318 kB]
Get:11 http://archive.ubuntu.com/ubuntu xenial-updates/main DEP-11 64x64 Icons [224 kB]
Get:12 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 DEP-11 Metadata [246 kB]
Get:13 http://archive.ubuntu.com/ubuntu xenial-updates/universe DEP-11 64x64 Icons [334 kB]
Get:14 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 DEP-11 Metadata [5,964 B]
Get:15 http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 DEP-11 Metadata [3,328 B]
Get:16 http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 DEP-11 Metadata [5,096 B]
Get:17 http://archive.ubuntu.com/ubuntu xenial-security/main amd64 DEP-11 Metadata [67.7 kB]
Get:18 http://archive.ubuntu.com/ubuntu xenial-security/main DEP-11 64x64 Icons [68.0 kB]
Get:19 http://archive.ubuntu.com/ubuntu xenial-security/universe amd64 DEP-11 Metadata [107 kB]
Get:20 http://archive.ubuntu.com/ubuntu xenial-security/universe DEP-11 64x64 Icons [142 kB]
Fetched 1,843 kB in 1s (1,397 kB/s)
Reading package lists... Done
mona@Mona:~/unicap-0.9.5$ sudo apt-get install libunicapgtk2-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libunicapgtk2-dev
