unmet dependencies: openshot : Depends: python-mlt5. E: Unable to correct problems,

[Daniel_Narrias]

Hello everyone.

I've been trying to solve this problem by googling it but it's been totally unsuccessful. I've tried every single suggested solution and none of them works. :( I gave up so I hope somebody can help me out with this.

I had installed Openshot and Blender. I couldn't use 3D animated features (not matching of Openshot and Blender), so then I uninstalled them with "sudo apt-get remove openshot" "sudo apt-get remove blender". I think somehow this deleted dependencies used by other applications and broke packages.

Now, when I try to install Openshot back, using a PPA for example (google entries), then I type
> sudo apt-get update
> sudo apt-get install openshot openshot-doc

and I get the error



The following packages have unmet dependencies:
openshot : Depends: python-mlt5 but it is not going to be installed or
python-mlt3 but it is not going to be installed or
python-mlt2 but it is not installable
E: Unable to correct problems, you have held broken packages.


When I try to install each package, I get into a loop without end:

> sudo apt-get install python-mlt5



The following packages have unmet dependencies:
python-mlt5 : Depends: libmlt5 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.


Then

> sudo apt-get install libmlt5



The following packages will be REMOVED:
libmlt++3 libmlt6
The following NEW packages will be installed:
libmlt5


But then, because of this, when I try to install python-mlt5, I get:
> sudo apt-get install python-mlt5


The following packages have unmet dependencies:
python-mlt5 : Depends: libmlt++3 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.


Again,

> sudo apt-get install libmlt++3


The following extra packages will be installed:
libmlt6
The following packages will be REMOVED:
libmlt5
The following NEW packages will be installed:
libmlt++3 libmlt6


> sudo apt-get install python-mlt5


The following packages have unmet dependencies:
python-mlt5 : Depends: libmlt5 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.


>sudo apt-get install libmlt5


The following packages will be REMOVED:
libmlt++3 libmlt6
The following NEW packages will be installed:
libmlt5


INFINITY LOOP! :(

Help please!!
Thanks in advance.

[ian-weisser]

Try installing from the Ubuntu repositories instead of the PPA.
You should also tell the PPA maintainer that they have created a seemingly unresolvable dependency loop.

Here's what mine looks like on 14.04

$ apt-cache depends openshot
openshot
Depends: gtk2-engines-pixbuf
Depends: fontconfig
Depends: librsvg2-common
Depends: melt
Depends: python-gtk2
Depends: python-httplib2
Depends: python-imaging
|Depends: python-mlt # Replaces python-mlt2/5, avoids dependency problem
|Depends: <python-mlt5> # Not in Ubuntu repos
Depends: <python-mlt2> # Not in Ubuntu repos
Depends: python-pygoocanvas
Depends: python-xdg
Depends: python
Depends: python-support
Suggests: blender
Suggests: inkscape
Recommends: openshot-doc
Recommends: frei0r-plugins


And it installed without problem.

[Daniel_Narrias]

Ok, solved the Problem.

There was a dependency Problem with an other PPA i had already enabled. The package libmlt was already installed but the PPA was disabled.
I thinked that the package would be uninstalled if the PPA were disabled.

[ian-weisser]

I thinked that the package would be uninstalled if the PPA were disabled.

A repository or PPA is simply a source for a package. Installing/Uninstalling is YOUR decision.

If you disable a PPA, the package remains installed in your system.
The package merely won't be upgraded,