fix: Go version propagation

[ldez]

• isolates code related to cache
• isolates the code borrowed from x/tools
• updates the code borrowed from x/tools
• fix Go version propagation

1 commit, 1 change.

I did some benchmarks and I didn't notice any performance improvements or regression after the update.

Fixes #4948
Related to #4907, #4905
Follows #5100

I will become an archaeologist with all this work on old code.
Next time, I will try to find the Lost Ark 😹