Problem to Install libssl-dev

[vikozo]

apt install libssl-dev

Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut.
Statusinformationen werden eingelesen.... Fertig
Einige Pakete konnten nicht installiert werden. Das kann bedeuten, dass Sie eine unmögliche Situation angefordert haben oder, wenn Sie die Unstable-Distribution verwenden, dass einige erforderliche Pakete noch nicht erstellt wurden oder Incoming noch nicht verlassen haben. Die folgenden Informationen helfen Ihnen vielleicht, die Situation zu lösen:

Die folgenden Pakete haben unerfüllte Abhängigkeiten: libssl-dev : Hängt ab von: libssl1.0.0 (= 1.0.1t-1+deb8u6) aber 1.0.2l-1~bpo8+1 soll installiert werden Empfiehlt: libssl-doc soll aber nicht installiert werden E: Probleme können nicht korrigiert werden, Sie haben zurückgehaltene defekte Pakete.

[kedaha]

Hi vikozo,
You have posted 5 topics, all related to the same problem, about package dependences:
Problem and error to install libpq-dev
Problem and error Installing libkrb5-dev
Problem and error to install libc-client2007e-dev
Problem to Install libssl-dev
Sie haben zurückgehaltene defekte Pakete
A translation from, for example, translate.google.com would help other forum members, who don't know German, to understand your question and help solve it.

apt install libssl-dev

Read package lists ... Done
Dependency tree is built.
Status information is read in .... 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, some required packages have not yet been created, or have not yet left Incoming. The following information may help you solve the situation:

The following packages have unfulfilled dependencies: libssl-dev: Depends on: libssl1.0.0 (= 1.0.1t-1 + deb8u6) but 1.0.2l-1 ~ bpo8 + 1 should be installed Recommended: libssl-doc is not installed E: Problems can not be corrected, you have backed defective packages.

[kopper]

Judging by this and your previous posts about troubles of installing packages, maybe your root problem is something else than dependencies for single packages. Some common issues can be ruled out by inspecting the sources list. Give us the output for:

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cat /etc/apt/sources.list; cat /etc/apt/sources.list.d/*.list

[Lysander]

It seems the OP expects us to translate his multifarious posts and solve his issue. Maybe he should go here if he does not want to include an English translation with his posts:

https://debianforum.de/forum/

[vikozo]

cat /etc/apt/sources.list; cat /etc/apt/sources.list.d/*.list

#deb cdrom:[Debian GNU/Linux 8.2.0 _Jessie_ - Official amd64 NETINST Binary-1 20150906-11:09]/ jessie main

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

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://dl.hhvm.com/debian jessie main

[kedaha]

Using Google Translate here's the terminal output from the various posts translated into English:

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You have held broken packages. The following packages have unfulfilled dependencies:libssl-dev: Depends on: libssl1.0.0 (= 1.0.1t-1 + deb8u6) but 1.0.2k-1 ~ bpo8 + 1 should be installed E: Problems cannot be corrected, you have held broken packages.
apt install libssl-dev
Read package lists ... Done
Dependency tree is built.
Status information is read in .... 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, some required packages have not yet been created, or have not yet left Incoming. The following information may help you solve the situation:

The following packages have unfulfilled dependencies: libssl-dev: Depends on: libssl1.0.0 (= 1.0.1t-1 + deb8u6) but 1.0.2l-1 ~ bpo8 + 1 should be installed Recommended: libssl-doc is not installed E: Problems can not be corrected, you have held broken packages.
[code]apt install libc-client2007e-dev

Read package lists ... Completed dependency tree. Status information is read .... 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, some required packages have not yet been created, or have not yet left Incoming. The following information may help you solve the situation:

The following packages have unfulfilled dependencies: libc-client2007e-dev: Depends on: comerr-dev is not to be installed Depends on: krb5-multidev is not to be installed Depends on: libssl-dev should not be installed E : Problems can not be corrected, you have held broken packages.

apt install libkrb5-dev
Read package lists ... Completed dependency tree. Status information is read .... 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, some required packages have not yet been created, or have not yet left Incoming. The following information may help you solve the situation:

The following packages have unmet dependencies: libkrb5-dev: Depends on: krb5-multidev (= 1.12.1 + dfsg-19 + deb8u2) but should not be installed E: Problems can not be corrected;

libpq-dev libkrb5-dev libc-client2007e-dev libssl-dev

apt install libssl-dev

Read package lists ... Done
Dependency tree is built.
Status information is read in .... 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, some required packages have not yet been created, or have not yet left Incoming. The following information may help you solve the situation:

The following packages have unfulfilled dependencies: libssl-dev: Depends on: libssl1.0.0 (= 1.0.1t-1 + deb8u6) but 1.0.2l-1 ~ bpo8 + 1 should be installed Recommended: libssl-doc is not installed E: Problems can not be corrected, you have backed defective packages.[/code]
It says that a backported package should be installed, but the /etc/apt/sources.list does not include jessie-backports.
Therefore, you could try adding this repository by editing the file to include the following line:

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deb http://ftp.debian.org/debian jessie-backports main

followed by

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apt-get update

It's a good idea when resolving problems with package dependencies to first simulate package installation and second to install the desired packages from backports as detailed at backports.debian.org/Instructions.
For example:

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aptitude -t jessie-backports install --simulate package

In the terminal for full information see:

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man aptitude

Aptitude often handles package dependencies better than apt.

[stevepusser]

Even if the backports repository is active, it's pinned at the lowest priority, so the user must explicitly install the backports version with (example)

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apt-get install libssl-dev -t jessie-backports

This is clearly explained in the instructions at backports.org. The OP is not getting any Debian points so far...