Use a native container rather than through cowbuilder to speed-up package build time (cuts around 5 minutes of setup time)
Don't make eigen-lssol a project dependency if it not found when we build the project, down the line this avoids issue with CMake 3.15 and up where we use find_dependency in the generated config script
eigen-lssol
a project dependency if it not found when we build the project, down the line this avoids issue with CMake 3.15 and up where we usefind_dependency
in the generated config script