pixi global sync should collect errors rather than returning early

[Hofer-Julian]

Problem description

Running pixi global sync on this pixi-global.toml

version = 1

[envs.test]
channels = ["https://prefix.dev/conda-forge"]
dependencies = { invalid_package = "*" }
exposed = {}

[envs.test2]
channels = ["https://prefix.dev/conda-forge"]
dependencies = { invalid_package_2 = "*" }
exposed = {}

[envs.typos]
channels = ["https://prefix.dev/conda-forge"]
dependencies = { typos = "*" }
exposed = { typos = "typos" }

gives the following error:

  × failed to solve environment
  ╰─▶ Cannot solve the request because of: No candidates were found for invalid_package *.

Also, typos is not available afterward.

As discussed with @wolfv, it would be good if:

• all errors would be collected, and
• correct environments would still be evaluated

[wolfv]

Thanks for writing this up! :)