You can install one of the packages provided by FEM on Colab by adding the following cell at the top of your notebook.
netgen, ngsolve, ngsxfem & ngsPETSc
A complete list of all dependencies is reported below. Users should typically not install any such dependency, since FEM on Colab automatically downloads and installs any required dependency of the aforementioned packages.
HDF5 & h5py
openmpi & mpi4py
Open CASCADE Technology
PETSc & petsc4py
SLEPc & slepc4py
VTK & pyvista
For convenience, text files containing links to all FEM on Colab tests can be downloaded below: