Cannot choose rust version in core22?

snapcraft
1

Hi,

How to choose version of Rust in snapcraft file? Currently file looks that

parts:
  user-part:
    source: .
    plugin: rust
    build-packages: [cargo, rustc]
  szyszka:
    plugin: rust
    source: https://github.com/qarmin/szyszka.git
    build-packages:
      - curl
      - gcc
      - git

apps:
  szyszka:
    command: bin/szyszka
    extensions: [gnome]
    plugs:
      - home
      - removable-media
      - udisks2

and error is

:: error: failed to compile `szyszka v2.0.0 (/build/szyszka/parts/szyszka/build)`, intermediate artifacts can be found at `/build/szyszka/parts/szyszka/build/target`
::
:: Caused by:
::   package `cairo-sys-rs v0.17.0` cannot be built because it requires rustc 1.64 or newer, while the currently active rustc version is 1.61.0
Failed to run the build script for part 'szyszka'.
Full execution log: '/root/.cache/snapcraft/log/snapcraft-20230211-093356.131656.log'

In The rust plugin I see that there is no version parameter in core22, to set rust version

2

The rust plugin uses the rust/cargo that’s available in the build environment, so you can install them from a different location (by manually downloading instead of using build-packages or even building them in a separate part if needed).