[jira] [Created] (ARROW-6459) [C++] Remove "python" from conda_env_cpp.yml

["Wes McKinney (Jira)" <ji...@apache.org>]

Wes McKinney created ARROW-6459:
-----------------------------------

             Summary: [C++] Remove "python" from conda_env_cpp.yml
                 Key: ARROW-6459
                 URL: https://issues.apache.org/jira/browse/ARROW-6459
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Wes McKinney


I'm not sure why "python" is in this dependency file -- if it is used to maintain a toolchain external to a particular Python environment then it confuses CMake like

{code}
CMake Warning at cmake_modules/BuildUtils.cmake:529 (add_executable):
  Cannot generate a safe runtime search path for target arrow-python-test
  because there is a cycle in the constraint graph:

    dir 0 is [/home/wesm/code/arrow/cpp/build/debug]
    dir 1 is [/home/wesm/miniconda/envs/arrow-3.7/lib]
      dir 2 must precede it due to runtime library [libcrypto.so.1.1]
    dir 2 is [/home/wesm/cpp-toolchain/lib]
      dir 1 must precede it due to runtime library [libpython3.7m.so.1.0]

  Some of these libraries may not be found correctly.
Call Stack (most recent call first):
  src/arrow/CMakeLists.txt:52 (add_test_case)
  src/arrow/python/CMakeLists.txt:139 (add_arrow_test)
{code}



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