I have a series of patches coming soon that fix both named issues.
- bug#42385: guile-based jupyter kernels mix guile3 and gui... Jesse Gibbons
- bug#42385: guile-based jupyter kernels mix guile3 an... Jesse Gibbons
- bug#42385: guile-based jupyter kernels mix guile3 an... Ludovic Courtès
- bug#42385: guile-based jupyter kernels mix guile... Jesse Gibbons
- bug#42385: guile-based jupyter kernels mix g... Ludovic Courtès
