我正在尝试使用arrow-nightlies通道安装 pyarrow 的夜间构建和 conda，以试验 Github 主分支中的最新代码。Conda 的版本是4.8.3. 3.8目标环境在MacOS上有python
当我运行时，conda install我收到以下错误：
$ conda install -c arrow-nightlies pyarrow=0.16.1.dev446
[...]
UnsatisfiableError: The following specifications were found
to be incompatible with the existing python installation in your environment:
Specifications:
- pyarrow=0.16.1.dev446 -> python[version='>=2.7,<2.8.0a0|>=3.5,<3.6.0a0']
Your python: python=3.8
[...]
尽管有一个用于 python 的构建3.8：
# Name Version Build Channel
pyarrow 0.16.1.dev446 py36h398749e_0 arrow-nightlies
pyarrow 0.16.1.dev446 py37h398749e_0 arrow-nightlies
pyarrow 0.16.1.dev446 py38h398749e_0 arrow-nightlies
我尝试将 python 降级为3.7, 3.6，3.5但我总是遇到同样的UnsatisfiableError异常。
有没有办法解决这个问题？
编辑：
运行@cel 建议后：
conda create -n foo -c arrow-nightlies python=3.8 pyarrow=0.16.1.dev446 --dry-run
我得到：
UnsatisfiableError: The following specifications were found to be incompatible with each other:
Output in format: Requested package -> Available versions
Package python conflicts for:
pyarrow=0.16.1.dev446 -> python[version='>=3.6,<3.7.0a0|>=3.8,<3.9.0a0|>=3.7,<3.8.0a0']
python=3.8
pyarrow=0.16.1.dev446 -> numpy[version='>=1.16,<2.0a0'] -> python[version='>=2.7,<2.8.0a0|>=3.5,<3.6.0a0']
输出conda config --show：
$ conda config --show
add_anaconda_token: True
add_pip_as_python_dependency: True
aggressive_update_packages:
- ca-certificates
- certifi
- openssl
allow_conda_downgrades: False
allow_cycles: True
allow_non_channel_urls: False
allow_softlinks: False
always_copy: False
always_softlink: False
always_yes: None
anaconda_upload: None
auto_activate_base: True
auto_stack: 0
auto_update_conda: True
bld_path:
changeps1: True
channel_alias: https://conda.anaconda.org
channel_priority: flexible
channels:
- defaults
client_ssl_cert: None
client_ssl_cert_key: None
clobber: False
conda_build: {}
create_default_packages: []
croot: /Users/XXXXXXXX/miniconda3/conda-bld
custom_channels:
pkgs/main: https://repo.anaconda.com
pkgs/r: https://repo.anaconda.com
Users/XXXXXXXX/miniconda3/conda-bld: file://
pkgs/pro: https://repo.anaconda.com
custom_multichannels:
defaults:
- https://repo.anaconda.com/pkgs/main
- https://repo.anaconda.com/pkgs/r
local:
- file:///Users/XXXXXXXX/miniconda3/conda-bld
debug: False
default_channels:
- https://repo.anaconda.com/pkgs/main
- https://repo.anaconda.com/pkgs/r
default_python: 3.6
default_threads: None
deps_modifier: not_set
dev: False
disallowed_packages: []
download_only: False
dry_run: False
enable_private_envs: False
env_prompt: ({default_env})
envs_dirs:
- /Users/XXXXXXXX/miniconda3/envs
- /Users/XXXXXXXX/.conda/envs
error_upload_url: https://conda.io/conda-post/unexpected-error
execute_threads: 1
extra_safety_checks: False
force: False
force_32bit: False
force_reinstall: False
force_remove: False
ignore_pinned: False
json: False
local_repodata_ttl: 1
migrated_channel_aliases: []
migrated_custom_channels: {}
non_admin_enabled: True
notify_outdated_conda: True
offline: False
override_channels_enabled: True
path_conflict: clobber
pinned_packages: []
pip_interop_enabled: False
pkgs_dirs:
- /Users/XXXXXXXX/miniconda3/pkgs
- /Users/XXXXXXXX/.conda/pkgs
proxy_servers: {}
quiet: False
remote_backoff_factor: 1
remote_connect_timeout_secs: 9.15
remote_max_retries: 3
remote_read_timeout_secs: 60.0
repodata_fns:
- current_repodata.json
- repodata.json
repodata_threads: None
report_errors: None
restore_free_channel: False
rollback_enabled: True
root_prefix: /Users/XXXXXXXX/miniconda3
safety_checks: warn
sat_solver: pycosat
separate_format_cache: False
shortcuts: True
show_channel_urls: None
solver_ignore_timestamps: False
ssl_verify: True
subdir: osx-64
subdirs:
- osx-64
- noarch
target_prefix_override:
track_features: []
unsatisfiable_hints: True
unsatisfiable_hints_check_depth: 2
update_modifier: update_specs
use_index_cache: False
use_local: False
use_only_tar_bz2: False
verbosity: 0
verify_threads: 1
whitelist_channels: []