Mamba does'nt find a solution when mixing conda-forge/defaults and not specifying Python explicitely #1102
Closed as not planned
Description
on mamba >= 0.15 the following environment file (adapted from the quetz repo) fails to find a solution and progress to installation of the packages
name: quetz
channels:
- defaults
- https://repo.mamba.pm/conda-forge
dependencies:
#- python>=3.7
- pip
- fastapi
- typer
- authlib
- psycopg2
- httpx=0.16.0
- sqlalchemy<1.4.0
- sqlalchemy-utils
- sqlite
- python-multipart
- uvicorn
- zstandard
- conda-build
- appdirs
- toml
- quetz-client
- fsspec
- requests
- h2<4.0.0
- pluggy
- jinja2
- itsdangerous
- alembic
- zchunk
- s3fs
- sphinx
- sphinx-book-theme
- tenacity
- xattr
- aiofiles
- pyyaml
- ujson
- prometheus_client
- pamela
- typing_extensions
- adlfsAny of the following actions resolves the issue
- removing the defaults channel
- uncommenting the python requirement
- downgrading to mamba 0.14
- reducing the number of requirements in the file.