source wheels do not include all nanobind files needed for compilation (+ this is evidently not checked on CI!)

[jcurtis2]

Appears to be unable to find the submodule/dependencies for nanobind.

      -- Performing Test COMPILER_HAS_ALLOW_ARGUMENT_MISMATCH
      -- Performing Test COMPILER_HAS_ALLOW_ARGUMENT_MISMATCH - Success
      -- Performing Test COMPILER_HAS_MISMATCH_ALL
      -- Performing Test COMPILER_HAS_MISMATCH_ALL - Failed
      -- MOSAIC enabled: /Users/jcurtis2/github/mosaic
      CMake Error at gitmodules/nanobind/CMakeLists.txt:58 (message):
        The nanobind dependencies are missing! You probably did not clone the
        project with --recursive.  It is possible to recover by invoking
      
        $ git submodule update --init --recursive
      
      
      -- Configuring incomplete, errors occurred!
      
      *** CMake configuration failed
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.

[slayoo]

Just reproduced it with pip install --no-binary PyPartMC PyPartMC==2.0.2, hence renaming the issue

[slayoo]

here's a PR adding a CI job aimed at verifying if the source wheels are usable: #490

[slayoo]

OK: the CI job reproduced the problem!
https://github.com/open-atmos/PyPartMC/actions/runs/24250882599/job/70810199865

[slayoo]

and this is the CMake code that generates this error message:

 53 # ---------------------------------------------------------------------------
 54 # Check whether all dependencies are present
 55 # ---------------------------------------------------------------------------
 56 
 57 if (NB_USE_SUBMODULE_DEPS AND NOT IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/ext/robin_map/include")
 58   message(FATAL_ERROR "The nanobind dependencies are missing! "
 59     "You probably did not clone the project with --recursive. It is possible to recover "
 60     "by invoking\n$ git submodule update --init --recursive")
 61 endif()

[slayoo]

so the ext/robin_map/include folder is missing...