pixi-pack no such file or directory error when using local conda packages

[htarnacki]

Reproducible example

cat pyproject.toml

[tool.pixi.feature.XXX.dependencies]
xxx = { path = ".conda/channel/noarch/xxx-3.0.0-pyhbf21a9e_0.conda" }

pixi install -e release
✔ The release environment has been installed.

pixi exec pixi-pack -e release
⏳ Downloading 22 packages...
Error: could not download package: No such file or directory (os error 2)

cat .pixi/envs/release/conda-meta/xxx-3.0.0-pyhbf21a9e_0.json

  "fn": "file:///home/zzz/.conda/channel/noarch/xxx-3.0.0-pyhbf21a9e_0.conda",
  "url": "file:///home/zzz/.conda/channel/noarch/xxx-3.0.0-pyhbf21a9e_0.conda",
  "channel": null,
  "extracted_package_dir": "/home/zzz/.cache/rattler/cache/pkgs/xxx-3.0.0-pyhbf21a9e_0",

Issue description

I have a dependency defined like this:

[tool.pixi.feature.XXX.dependencies]
xxx = { path = ".conda/channel/noarch/xxx-3.0.0-pyhbf21a9e_0.conda" }

Installation is succesfull:

pixi install -e release

But when I try to package the environment, I get an error:

pixi exec pixi-pack -e release
⏳ Downloading 22 packages...
Error: could not download package: No such file or directory (os error 2)

Expected behavior

Succesfull execution of command:

pixi exec pixi-pack -e release

[delsner]

Thanks, this is actually conda/rattler#1721

[delsner]

We'll add a test and potentially a fix here: #230