rattler already supports this feature while solving, it's build in this PR: conda/rattler#660

Pixi would benefit from this feature.

On a quick look, I would propose to add it with the following toml addition:

[workspace]
solve-strategy = "highest" # "lowest", "lowest-direct"

[feature.test]
solve-strategy = "lowest-direct" # "lowest", "highest"

This should then also be added to the pixi.lock to make sure the lockfile gets invalidated when you change this.

environments:
  default:
    channels:
    - url: https://prefix.dev/conda-forge/
    solve-strategy: highest # <<<<
    packages:
      linux-64:
      - conda: xxx
      ...

Questions:

• Should this be target specific?
• Should this be automatically be translated to the uv resolution-strategy?
• Should we use resolution-strategy as a name to align with uv?