A few questions related to upgrading esp-hal

[yanshay]

I want to upgrade a pretty large application from 0.23.1 to 1.0.0 .

I saw that MSRV is now 1.88 and I'm still on 1.84.

• will 1.88 work with 0.23.1 (since I still need my previous version working until I complete the upgrade)?
• Is there a way to have several esp compiler/toolchains in parallel in the system? I'm using espup and it seems like it switches toolchain on every install
• Are the various other toolsets coming from esp-idf (those that get used when I run . $HOME/export-esp.sh) common to the different rust toolchains?

[bugadani]

Is there a way to have several esp compiler/toolchains in parallel in the system?

espup install -v 1.88.0 -n esp188 then you can use cargo +esp for 1.84 and cargp +esp188 for 1.88