How can I have Kicad version v5 and the new v6 together in the same machine while v6 is not still official?

[leoheck]

Installing it from here helped me to install Kicad

I built libngspice-kicad with ngSpice 30 (latest stable version)

I noticed that the old version of ngSpice is being used with the kicad_5.0.2 package from the repository (that does not support VDMOS models). So, I made a new version of the package libngspice-kicad with ngSpice 30. I used the original source package and just replaced the source code of ngSpice, incremented the version numbers and added new entry in the changelog. libngspice-kicad_0.2-30_amd64.deb (1.9 MB) libngspice-kicad_0.2-30_amd64.deb.sha512sum (166 Bytes) I also built again the kicad…

But It should not be a dependency, I think.