rattler-build does not copy directories unless the file path ends in /

[AaronOpfer]

Found this discrepency between how rattler-build and conda build handle file paths specified as test-time source dependencies.

recipe.yaml

package:
  name: bug_reproduction
  version: 0

source:
  path: .

build:
  script:
    - echo hi

tests:
  - files:
      source:
        - subdirectory
    script:
      - test -f subdirectory/file

source tree

$ find -type f
./subdirectory/file
./recipe.yaml

rattler-build build --recipe recipe.yaml --output-dir /some/other/place

... snip ...
 │ Installing test environment
 │ ✔ Successfully updated the test environment
 │ Testing commands:
 │ + test -f subdirectory/file
 │ × error Script failed with status 1
 │ × error Work directory: '/tmp/.tmpPel2kW'
 │ × error To debug the build, run it manually in the work directory (execute the `./conda_build.sh` or `conda_build.bat` script)
 │
 ╰─────────────────── (took 1 second)

Expected Result

subdirectory's content to be copied into the test work directory and the build passes.

Actual Result

Build fails.

Workaround is possible: append a / to the path in the recipe.yaml i.e

tests:
  - files:
      source:
        - subdirectory/

tested on rattler-build 0.35.9

[wolfv]

Yeah, I think we already have a report about it. Should get fixed.

[mgorny]

I guess this is #1055 with a WIP fix in #1067.