无法在Debian上安装curl

Question

我试图在Debian上安装Curl，但不幸的是，我得到了以下错误：

The following packages have unmet dependencies: curl : Depends: libcurl3-gnutls (= 7.47.0-1) but 7.38.0-4+deb8u2 is to be installed E: Unable to correct problems, you have held broken packages.

我试图通过使用：sudo apt-get autoremove作为另一个线程来解决这个问题，但是我一直存在同样的问题。

我该怎么解决呢？

编辑：

下面是apt-cache policy的输出：

Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://ftp.debian.org/debian/ testing/non-free Translation-en
 500 http://ftp.debian.org/debian/ testing/main Translation-en
 500 http://ftp.debian.org/debian/ testing/contrib Translation-en
 500 http://ftp.debian.org/debian/ testing/non-free amd64 Packages
     release o=Debian,a=testing,n=stretch,l=Debian,c=non-free
     origin ftp.debian.org
 500 http://ftp.debian.org/debian/ testing/contrib amd64 Packages
     release o=Debian,a=testing,n=stretch,l=Debian,c=contrib
     origin ftp.debian.org
 500 http://ftp.debian.org/debian/ testing/main amd64 Packages
     release o=Debian,a=testing,n=stretch,l=Debian,c=main
     origin ftp.debian.org
 500 http://security.debian.org/ jessie/updates/non-free Translation-en
 500 http://security.debian.org/ jessie/updates/main Translation-en
 500 http://security.debian.org/ jessie/updates/contrib Translation-en
 500 http://security.debian.org/ jessie/updates/non-free amd64 Packages
     release v=8,o=Debian,a=stable,n=jessie,l=Debian-Security,c=non-free
     origin security.debian.org
 500 http://security.debian.org/ jessie/updates/contrib amd64 Packages
     release v=8,o=Debian,a=stable,n=jessie,l=Debian-Security,c=contrib
     origin security.debian.org
 500 http://security.debian.org/ jessie/updates/main amd64 Packages
     release v=8,o=Debian,a=stable,n=jessie,l=Debian-Security,c=main
     origin security.debian.org
 500 http://mirrors.online.net/debian/ jessie/non-free Translation-en
 500 http://mirrors.online.net/debian/ jessie/main Translation-en
 500 http://mirrors.online.net/debian/ jessie/contrib Translation-en
 500 http://mirrors.online.net/debian/ jessie/contrib amd64 Packages
     release v=8.4,o=Debian,a=stable,n=jessie,l=Debian,c=contrib
     origin mirrors.online.net
 500 http://mirrors.online.net/debian/ jessie/non-free amd64 Packages
     release v=8.4,o=Debian,a=stable,n=jessie,l=Debian,c=non-free
     origin mirrors.online.net
 500 http://mirrors.online.net/debian/ jessie/main amd64 Packages
     release v=8.4,o=Debian,a=stable,n=jessie,l=Debian,c=main
     origin mirrors.online.net
Pinned packages:
     nginx -> 1.10.0-1

以下是/etc/apt/sources.list的内容：

# deb http://mirrors.online.net/debian jessie main

deb http://mirrors.online.net/debian jessie main non-free contrib
deb-src http://mirrors.online.net/debian jessie main non-free contrib

deb http://security.debian.org/ jessie/updates main contrib non-free
deb-src http://security.debian.org/ jessie/updates main contrib non-free

deb http://ftp.debian.org/debian/ testing main contrib non-free
deb-src http://ftp.debian.org/debian/ testing main contrib non-free

Answer 1

libcurl3-gnutls (= 7.47.0-1)包来自testing并已安装，为了修复curl的S依赖关系，您需要使用aptitude将libcurl3 3-gnutls版本从7.47降为7.38 (因为它比apt-get更有用)。

打开终端并键入以下命令：

sudo aptitude -f install libcurl3-gnutls

按照说明并选择降低包装的等级。

Answer 2

简单地说，您需要升级它，然后再安装curl。

sudo得到-f升级。

然后

sudo apt-获取安装curl libcurl3 libcurl3-dev php5-curl