从安装 VELES 时https://velesnet.ml/，由于软件包损坏，无法安装：
alvas@ubi:~$ wget -O - https://velesnet.ml/ubuntu-install.sh | bash -
--2015-11-23 22:42:14-- https://velesnet.ml/ubuntu-install.sh
Resolving velesnet.ml (velesnet.ml)... 52.16.38.191
Connecting to velesnet.ml (velesnet.ml)|52.16.38.191|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 554 [application/octet-stream]
Saving to: ‘STDOUT’
100%[===============================================================================================================================>] 554 --.-K/s in 0s
2015-11-23 22:42:15 (105 MB/s) - written to stdout [554/554]
Requesting sudo...
[sudo] password for alvas:
Thanks
--2015-11-23 22:42:19-- https://velesnet.ml/apt/velesnet.ml.gpg.key
Resolving velesnet.ml (velesnet.ml)... 52.16.38.191
Connecting to velesnet.ml (velesnet.ml)|52.16.38.191|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1033 (1.0K) [application/octet-stream]
Saving to: ‘STDOUT’
100%[===============================================================================================================================>] 1,033 --.-K/s in 0s
2015-11-23 22:42:20 (179 MB/s) - written to stdout [1033/1033]
OK
deb [arch=amd64] https://velesnet.ml/apt trusty main
Ign http://ppa.launchpad.net trusty InRelease
Hit http://repo.steampowered.com precise InRelease
Ign http://dl.google.com stable InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://dl.google.com stable InRelease
Ign http://ftp.uni-mainz.de trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://dl.google.com stable Release.gpg
Hit http://repo.steampowered.com precise/steam Sources
Hit http://ftp.uni-mainz.de trusty Release.gpg
Hit http://ppa.launchpad.net trusty InRelease
Hit http://dl.google.com stable Release.gpg
Hit http://ppa.launchpad.net trusty InRelease
Hit http://ftp.uni-mainz.de trusty Release
Get:1 http://ppa.launchpad.net trusty InRelease [15.4 kB]
Hit http://dl.google.com stable Release
Hit http://repo.steampowered.com precise/steam amd64 Packages
Hit http://download.mono-project.com wheezy InRelease
Ign http://releases.neubot.org InRelease
Hit http://dl.google.com stable Release
Hit http://ftp.uni-mainz.de trusty/main amd64 Packages
Ign http://ppa.launchpad.net trusty InRelease
Hit http://repo.steampowered.com precise/steam i386 Packages
Hit http://releases.neubot.org Release.gpg
Hit http://dl.google.com stable/main amd64 Packages
Ign http://ppa.launchpad.net trusty InRelease
Hit http://download.mono-project.com wheezy/main amd64 Packages
Hit http://ftp.uni-mainz.de trusty/multiverse amd64 Packages
Hit http://releases.neubot.org Release
Get:2 http://archive.getdeb.net trusty-getdeb InRelease [8,143 B]
Hit http://dl.google.com stable/main i386 Packages
Hit http://ppa.launchpad.net trusty InRelease
Get:3 https://velesnet.ml trusty InRelease
Hit http://download.mono-project.com wheezy/main i386 Packages
Hit http://ftp.uni-mainz.de trusty/universe amd64 Packages
Ign http://ppa.launchpad.net trusty InRelease
Hit http://ppa.launchpad.net trusty InRelease
Hit http://releases.neubot.org Packages
Hit http://ftp.uni-mainz.de trusty/restricted amd64 Packages
Get:4 https://velesnet.ml trusty/main amd64 Packages
Ign http://www.openprinting.org lsb3.2 InRelease
Hit http://ppa.launchpad.net trusty InRelease
Hit http://ftp.uni-mainz.de trusty/main i386 Packages
Hit http://dl.google.com stable/main amd64 Packages
Get:5 http://archive.getdeb.net trusty-getdeb/apps amd64 Packages [69.0 kB]
Get:6 https://velesnet.ml trusty/main Translation-en_US
Hit http://ppa.launchpad.net trusty InRelease
Hit http://dl.google.com stable/main i386 Packages
Hit http://ftp.uni-mainz.de trusty/multiverse i386 Packages
Hit http://ppa.launchpad.net trusty InRelease
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ftp.uni-mainz.de trusty/universe i386 Packages
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://www.openprinting.org lsb3.2 Release.gpg
Hit http://ftp.uni-mainz.de trusty/restricted i386 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Ign http://download.mono-project.com wheezy/main Translation-en_US
Ign http://download.mono-project.com wheezy/main Translation-en
Hit http://ftp.uni-mainz.de trusty/main Translation-en
Hit http://archive.getdeb.net trusty-getdeb/games amd64 Packages
Hit http://www.openprinting.org lsb3.2 Release
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign https://velesnet.ml trusty/main Translation-en_US
Hit http://ftp.uni-mainz.de trusty/multiverse Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Ign https://velesnet.ml trusty/main Translation-en
Get:7 http://archive.getdeb.net trusty-getdeb/apps i386 Packages [69.9 kB]
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ftp.uni-mainz.de trusty/restricted Translation-en
Get:8 http://ppa.launchpad.net trusty/main amd64 Packages [5,081 B]
Get:9 http://ppa.launchpad.net trusty/main i386 Packages [5,062 B]
Hit http://www.openprinting.org lsb3.2/contrib amd64 Packages
Ign http://releases.neubot.org Translation-en_US
Get:10 http://ppa.launchpad.net trusty/main Translation-en [2,974 B]
Hit http://ftp.uni-mainz.de trusty/universe Translation-en
Ign http://releases.neubot.org Translation-en
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://www.openprinting.org lsb3.2/contrib i386 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Ign http://dl.google.com stable/main Translation-en_US
Hit http://archive.getdeb.net trusty-getdeb/games i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign http://dl.google.com stable/main Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Ign http://dl.google.com stable/main Translation-en_US
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign http://dl.google.com stable/main Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Ign http://ftp.uni-mainz.de trusty/main Translation-en_US
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign http://ftp.uni-mainz.de trusty/multiverse Translation-en_US
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Ign http://ftp.uni-mainz.de trusty/restricted Translation-en_US
Ign http://ftp.uni-mainz.de trusty/universe Translation-en_US
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign http://ppa.launchpad.net trusty/main Translation-en_US
Ign http://ppa.launchpad.net trusty/main Translation-en
Ign http://archive.getdeb.net trusty-getdeb/apps Translation-en_US
Ign http://ppa.launchpad.net trusty/main Translation-en_US
Ign http://ppa.launchpad.net trusty/main Translation-en
Ign http://archive.getdeb.net trusty-getdeb/apps Translation-en
Ign http://archive.getdeb.net trusty-getdeb/games Translation-en_US
Ign http://www.openprinting.org lsb3.2/contrib Translation-en_US
Ign http://archive.getdeb.net trusty-getdeb/games Translation-en
Hit http://www.openprinting.org lsb3.2/contrib Translation-en
Ign http://repo.steampowered.com precise/steam Translation-en_US
Ign http://repo.steampowered.com precise/steam Translation-en
Fetched 191 kB in 5s (36.1 kB/s)
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
python3-veles : Depends: ocl-icd-libopencl1 (>= 2.1.3-5) but 2.1.3-4 is to be installed
E: Unable to correct problems, you have held broken packages.
我的发行版：
alvas@ubi:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.3 LTS
Release: 14.04
Codename: trusty
如何解决包损坏问题以便成功安装 VELES？
我的输出来自apt-cache policy python3-veles ocl-icd-libopencl1
alvas@ubi:~$ apt-cache policy python3-veles ocl-icd-libopencl1
python3-veles:
Installed: (none)
Candidate: 1.0.0-beta1
Version table:
1.0.0-beta1 0
500 https://velesnet.ml/apt/ trusty/main amd64 Packages
ocl-icd-libopencl1:
Installed: 2.1.3-4
Candidate: 2.1.3-5
Version table:
2.1.3-5 0
500 https://velesnet.ml/apt/ trusty/main amd64 Packages
*** 2.1.3-4 0
500 http://ftp.uni-mainz.de/ubuntu/ trusty/universe amd64 Packages
100 /var/lib/dpkg/status
答案1
正在解答
该软件包python3-veles依赖于ocl-icd-libopencl1 (>= 2.1.3-5)。标准 Ubuntu 存储库中不提供适用于 Trusty 的此版本。
版本https://velesnet.ml/apt/被另一个依赖问题阻止。
您可以升级到 Ubuntu Wily，也可以尝试强制安装此软件包。
要修复您的包装系统，请按照以下步骤操作...
安装脚本已在您的 中创建了一个条目sources.list。删除此条目：
sudo sed -i '/velesnet\.ml/d' /etc/apt/sources.list`
并更新包信息
sudo apt-get update