Conda build 3.27.1 fails with libmamba solver with key error then an assert error when key error corrected

[hsparra]

Checklist

• I added a descriptive title
• I searched open reports and couldn't find a duplicate

What happened?

This is a continuation of issue conda/conda-build#4991. After running the new version the same exception occured at conda/export.py, line 208

File "/home/<username>/.conda/envs/conda-23.9/lib/python3.11/site-packages/conda/exports.py", line 208, in display_actions
actions["LINK"] = [index[d] for d in actions["LINK"]]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/<username>/.conda/envs/conda-23.9/lib/python3.11/site-packages/conda/exports.py", line 208, in <listcomp>
actions["LINK"] = [index[d] for d in actions["LINK"]]
~~~~~^^^
KeyError: Dist(channel='https://<v4 url>/cbuild-test', dist_name='_libgcc_mutex-0.1-main', name='_libgcc_mutex', fmt='.tar.bz2', version='0.1', build_string='main', build_number=0, base_url=None, platform=None)

Per a recommendation line 208 in conda/exports.py was replaced locally with and tested:
actions["LINK"] = [index.get(d, d) for d in actions["LINK"]]

This seemed to address the KeyError but a new AssertError occurs:

assert isinstance(prec, PackageRecord)
AssertionError
-----
conda info......
conda: 23.9.0
conda-build: 3.27.1.dev15
python version: 3.11.5.final.0
conda-libmamba-solver: 23.9.1
libmaba: 1.5.1```

The error was reconfirmed with the released version of 3.27.1.


### Conda Info

```shell
conda: 23.9.0
conda-build: 3.27.1.dev15
python version: 3.11.5.final.0
conda-libmamba-solver: 23.9.1
libmaba: 1.5.1

Conda Config

See conda/conda-build#4991

Conda list

See conda/conda-build#4991

Additional Context

See conda/conda-build#4991

[desilinguist]

FYI, we use a local Artifactory instance to host our internal packages and a conda-forge cache, and we are still unable to build conda packages unless we set CONDA_SOLVER=classic when calling conda build. We get a KeyError with the mamba solver that looks like this:

Traceback

# >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

    Traceback (most recent call last):
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda/exception_handler.py", line 17, in __call__
        return func(*args, **kwargs)
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda/cli/main.py", line 83, in main_subshell
        exit_code = do_call(args, parser)
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda/cli/conda_argparse.py", line 170, in do_call
        result = plugin_subcommand.action(getattr(args, "_args", args))
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda_build/plugin.py", line 10, in build
        execute(*args, **kwargs)
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda_build/cli/main_build.py", line 572, in execute
        outputs = api.build(
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda_build/api.py", line 254, in build
        return build_tree(
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda_build/build.py", line 3808, in build_tree
        test(pkg, config=metadata.config.copy(), stats=stats)
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda_build/build.py", line 3551, in test
        environ.create_env(
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda_build/environ.py", line 1050, in create_env
        display_actions(actions, index)
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda/exports.py", line 214, in display_actions
        actions["LINK"] = [index[d] for d in actions["LINK"]]
      File "/home/ec2-user/miniconda/lib/python3.10/site-packages/conda/exports.py", line 214, in <listcomp>
        actions["LINK"] = [index[d] for d in actions["LINK"]]
    KeyError: Dist(channel='defaults', dist_name='jdk11-ac-11.0.18.10.1-0', name='jdk11-ac', fmt='.tar.bz2', version='11.0.18.10.1', build_string='0', build_number=0, base_url=None, platform=None)

This happens with:

conda/23.11.0 requests/2.31.0 CPython/3.10.13 Linux/6.1.61-85.141.amzn2023.x86_64 amzn/2023 glibc/2.34 solver/libmamba conda-libmamba-solver/23.11.1 libmambapy/1.5.5

[jaimergp]

We just released 23.12.0, which should alleviate this when paired with conda-build 3.28. Can you check with those versions? If it keeps happening with those versions, please open a new issue with these details. Thanks!

[desilinguist]

Still fails with conda-libmamba-solver=23.12.0 and conda-build=3.28.1. I have filled #409.