upgrade-all is slow

[flying-sheep]

How would this feature be useful?

When running topgrade, pipx is the slowest step when there are no upgrades

Describe the solution you'd like

pipx upgrade-all should check if upgrades are available in parallel. It’s fine if they’re upgraded in sequence, but taking 2 seconds to check if 3 tools have upgrades pending is a bit slow.

Maybe using a connection pool with limited size if we want to overengineer things. I assume for most users, starting x requests, where x is the number of installed tools would be fine.

Describe alternatives you've considered

none

[chrysle]

pipx upgrade-all should check if upgrades are available in parallel. It’s fine if they’re upgraded in parallel, but taking 2 seconds to check if 3 tools have upgrades pending is a bit slow.

Agreed. I'll look into this.

[flying-sheep]

Great! Small correction, I meant

It’s fine if they’re upgraded in parallelsequence

[chrysle]

I think this would best be tackled after #149 has been addressed, as then we'll be able to handle requests to the simple API for newer versions in parallel.