Will widespread vaccination for 'chickenpox' eventually cause or contribute to a mutation of the virus that is vaccine resistant?

Doubt it: We have viruses that tend to remain stable, like measles, mumps, rubella and so far varicella. We have viruses that tend to mutate, like the various flu strains. We have been vaccinating against the big 3 MMR for at least 4 decades and the varicella for more than 2. There is no evidence of change in these. The flu, however, mutates quire often and makes the vaccine a best guess and sometimes wrong