apt install “older” version of package

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Ubuntu 16.04, docker, no packages installed at all. I have package A, which depends on ffmpeg:



# apt show A
...
Depends: ..., ffmpeg (= 3.4-7), ...
...


I have newer (than system one) ffmpeg version in my custom aptly repo, but since 7: prefix it is lower:



# apt policy ffmpeg
ffmpeg:
Installed: (none)
Candidate: 7:2.8.11-0ubuntu0.16.04.1
Version table:
7:2.8.11-0ubuntu0.16.04.1 500
500 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
500 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages
7:2.8.6-1ubuntu2 500
500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
3.4-7 500
500 http://packages.tnt/aptly/public/orion/ubuntu xenial/master amd64 Packages


When I try to install A:



# apt install A
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:
A : Depends: ffmpeg (= 3.4-7) but 7:2.8.11-0ubuntu0.16.04.1 is to be installed
E: Unable to correct problems, you have held broken packages.


But



apt install ffmpeg=3.4-7 && apt install A


works!



  • Why apt have such behavior?

  • How to make apt install A work as expected?









share|improve this question





















  • Tried changing the priority of the source (PPA?) for packages.tnt?
    – Xen2050
    Mar 23 at 18:31










  • @Xen2050 if you mean move source at top of sources.list, then this have no success.
    – broomrider
    Mar 24 at 14:21














up vote
1
down vote

favorite












Ubuntu 16.04, docker, no packages installed at all. I have package A, which depends on ffmpeg:



# apt show A
...
Depends: ..., ffmpeg (= 3.4-7), ...
...


I have newer (than system one) ffmpeg version in my custom aptly repo, but since 7: prefix it is lower:



# apt policy ffmpeg
ffmpeg:
Installed: (none)
Candidate: 7:2.8.11-0ubuntu0.16.04.1
Version table:
7:2.8.11-0ubuntu0.16.04.1 500
500 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
500 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages
7:2.8.6-1ubuntu2 500
500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
3.4-7 500
500 http://packages.tnt/aptly/public/orion/ubuntu xenial/master amd64 Packages


When I try to install A:



# apt install A
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:
A : Depends: ffmpeg (= 3.4-7) but 7:2.8.11-0ubuntu0.16.04.1 is to be installed
E: Unable to correct problems, you have held broken packages.


But



apt install ffmpeg=3.4-7 && apt install A


works!



  • Why apt have such behavior?

  • How to make apt install A work as expected?









share|improve this question





















  • Tried changing the priority of the source (PPA?) for packages.tnt?
    – Xen2050
    Mar 23 at 18:31










  • @Xen2050 if you mean move source at top of sources.list, then this have no success.
    – broomrider
    Mar 24 at 14:21












up vote
1
down vote

favorite









up vote
1
down vote

favorite











Ubuntu 16.04, docker, no packages installed at all. I have package A, which depends on ffmpeg:



# apt show A
...
Depends: ..., ffmpeg (= 3.4-7), ...
...


I have newer (than system one) ffmpeg version in my custom aptly repo, but since 7: prefix it is lower:



# apt policy ffmpeg
ffmpeg:
Installed: (none)
Candidate: 7:2.8.11-0ubuntu0.16.04.1
Version table:
7:2.8.11-0ubuntu0.16.04.1 500
500 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
500 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages
7:2.8.6-1ubuntu2 500
500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
3.4-7 500
500 http://packages.tnt/aptly/public/orion/ubuntu xenial/master amd64 Packages


When I try to install A:



# apt install A
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:
A : Depends: ffmpeg (= 3.4-7) but 7:2.8.11-0ubuntu0.16.04.1 is to be installed
E: Unable to correct problems, you have held broken packages.


But



apt install ffmpeg=3.4-7 && apt install A


works!



  • Why apt have such behavior?

  • How to make apt install A work as expected?









share|improve this question













Ubuntu 16.04, docker, no packages installed at all. I have package A, which depends on ffmpeg:



# apt show A
...
Depends: ..., ffmpeg (= 3.4-7), ...
...


I have newer (than system one) ffmpeg version in my custom aptly repo, but since 7: prefix it is lower:



# apt policy ffmpeg
ffmpeg:
Installed: (none)
Candidate: 7:2.8.11-0ubuntu0.16.04.1
Version table:
7:2.8.11-0ubuntu0.16.04.1 500
500 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
500 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages
7:2.8.6-1ubuntu2 500
500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
3.4-7 500
500 http://packages.tnt/aptly/public/orion/ubuntu xenial/master amd64 Packages


When I try to install A:



# apt install A
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:
A : Depends: ffmpeg (= 3.4-7) but 7:2.8.11-0ubuntu0.16.04.1 is to be installed
E: Unable to correct problems, you have held broken packages.


But



apt install ffmpeg=3.4-7 && apt install A


works!



  • Why apt have such behavior?

  • How to make apt install A work as expected?






apt package-management






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 23 at 16:56









broomrider

63




63











  • Tried changing the priority of the source (PPA?) for packages.tnt?
    – Xen2050
    Mar 23 at 18:31










  • @Xen2050 if you mean move source at top of sources.list, then this have no success.
    – broomrider
    Mar 24 at 14:21
















  • Tried changing the priority of the source (PPA?) for packages.tnt?
    – Xen2050
    Mar 23 at 18:31










  • @Xen2050 if you mean move source at top of sources.list, then this have no success.
    – broomrider
    Mar 24 at 14:21















Tried changing the priority of the source (PPA?) for packages.tnt?
– Xen2050
Mar 23 at 18:31




Tried changing the priority of the source (PPA?) for packages.tnt?
– Xen2050
Mar 23 at 18:31












@Xen2050 if you mean move source at top of sources.list, then this have no success.
– broomrider
Mar 24 at 14:21




@Xen2050 if you mean move source at top of sources.list, then this have no success.
– broomrider
Mar 24 at 14:21















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