No puedo instalar Cura 3.1 en mi Ubuntu 16.04

No puedo instalar Cura 3.1 en mi Ubuntu 16.04

Estoy intentando descargar el software Cura Slicer a mi computadora y sigo deteniéndome en seco. Lo he intentado sudo apt update y me sale este mensaje:

Aborted (core dumped)
Reading package lists... Done
N: Ignoring file 'sp' in directory '/etc/apt/sources.list.d/' as it has no filename extension
N: Ignoring file 'google-chrome.lis' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh > /dev/null; fi'
E: Sub-process returned an error code

He intentado instalar con

sudo apt-get install cura    

pero luego me sale:

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:
 cura : Depends: python3-uranium but it is not going to be installed
        Depends: qml-module-qtqml-models2 but it is not installable
        Depends: qml-module-qtquick-controls but it is not installable
        Depends: qml-module-qtquick-dialogs but it is not installable
        Recommends: cura-resources-firmware but it is not going to be installed
        Recommends: cura-plugins-all but it is not going to be installed
        Recommends: python3-numpy-stl but it is not installable
N: Ignoring file 'sp' in directory '/etc/apt/sources.list.d/' as it has no filename extension
N: Ignoring file 'google-chrome.lis' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
E: Unable to correct problems, you have held broken packages.

Yo he tratado

sudo ppa-purge ppa:thopiekar/cura    

pero me dice:sudo: ppa-purge: command not found

Soy nuevo en Linux y tengo poca experiencia. Por favor, explique lo que intenta decirme en términos sencillos. Gracias de antemano.

Respuesta1

La versión estable actual de Cura está disponible mediante PPA: ppa:thopiekar/cura:

sudo add-apt-repository ppa:thopiekar/cura
sudo apt-get update 
sudo apt-get install cura

Si desea una versión de vanguardia de Cura, puede usarppa:thopiekar/cura-master

sudo add-apt-repository ppa:thopiekar/cura-master
sudo apt-get update
sudo apt-get install cura

Respuesta2

El repositorio mencionado en la respuesta aceptada está desactualizado, solo tiene la versión 2.7 de cura. Actualmente, la mejor manera de instalarlo es descargarlo desdesitio curadirectamente.

wget https://download.ultimaker.com/current/Cura-3.4.1.AppImage
sudo mv Cura-3.4.1.AppImage /usr/bin/cura
sudo chmod +x /usr/bin/cura

Ahora puedes simplemente corrercura

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