Current Behavior
After updating conda to 4.7.5, conda can no longer be downgraded to a previous version using a version spec such as conda install conda=4.6. This behavior can be changed if the auto_update_conda configuration parameter is set to false.
Steps to Reproduce
[root@chi9 build_scripts]# conda --version
conda 4.6.14
[root@chi9 build_scripts]# conda update -y -q conda conda-build
Collecting package metadata: ...working... done
Solving environment: ...working... done
## Package Plan ##
environment location: /opt/conda
added / updated specs:
- conda
- conda-build
The following packages will be downloaded:
package | build
---------------------------|-----------------
certifi-2019.6.16 | py37_0 154 KB defaults
conda-4.7.5 | py37_0 3.0 MB defaults
conda-build-3.18.5 | py37_0 517 KB defaults
conda-package-handling-1.3.10| py37_0 259 KB defaults
------------------------------------------------------------
Total: 3.9 MB
The following NEW packages will be INSTALLED:
conda-package-han~ pkgs/main/linux-64::conda-package-handling-1.3.10-py37_0
The following packages will be UPDATED:
certifi 2019.3.9-py37_0 --> 2019.6.16-py37_0
conda 4.6.14-py37_0 --> 4.7.5-py37_0
conda-build 3.17.8-py37_0 --> 3.18.5-py37_0
Preparing transaction: ...working... done
Verifying transaction: ...working... done
Executing transaction: ...working... done
[root@chi9 build_scripts]# conda --version
conda 4.7.5
[root@chi9 build_scripts]# conda install conda=4.6
Collecting package metadata (current_repodata.json): done
Solving environment: failed
Collecting package metadata (repodata.json): done
Solving environment: done
# All requested packages already installed.
Changing auto_update_conda:
root@chi9 build_scripts]# CONDA_AUTO_UPDATE_CONDA=0 conda install conda=4.6
Collecting package metadata (current_repodata.json): done
Solving environment: failed
Collecting package metadata (repodata.json): done
Solving environment: done
## Package Plan ##
environment location: /opt/conda
added / updated specs:
- conda=4.6
The following packages will be DOWNGRADED:
conda 4.7.5-py37_0 --> 4.6.14-py37_0
Proceed ([y]/n)?
Expected Behavior
Conda should allow the installation of a specific version when it is provided explicitly on the command line.
Environment Information
conda info
[root@chi9 build_scripts]# conda inf
CommandNotFoundError: No command 'conda inf'.
Did you mean 'conda info'?
[root@chi9 build_scripts]# conda info
active environment : None
user config file : /root/.condarc
populated config files : /root/.condarc
conda version : 4.7.5
conda-build version : 3.18.5
python version : 3.7.3.final.0
virtual packages :
base environment : /opt/conda (writable)
channel URLs : https://repo.anaconda.com/pkgs/main/linux-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/linux-64
https://repo.anaconda.com/pkgs/r/noarch
package cache : /opt/conda/pkgs
/root/.conda/pkgs
envs directories : /opt/conda/envs
/root/.conda/envs
platform : linux-64
user-agent : conda/4.7.5 requests/2.22.0 CPython/3.7.3 Linux/4.15.0-51-generic centos/6.9 glibc/2.12
UID:GID : 0:0
netrc file : None
offline mode : False
conda config --show-sources
[root@chi9 build_scripts]# conda config --show-sources
==> /root/.condarc <==
add_pip_as_python_dependency: False
show_channel_urls: True
conda list --show-channel-urls
[root@chi9 build_scripts]# conda list --show-channel-urls
# packages in environment at /opt/conda:
#
# Name Version Build Channel
anaconda-client 1.7.2 py37_0 defaults
asn1crypto 0.24.0 py37_0 defaults
attrs 19.1.0 py37_1 defaults
beautifulsoup4 4.7.1 py37_1 defaults
binutils_impl_linux-64 2.31.1 h6176602_1 defaults
binutils_linux-64 2.31.1 h6176602_7 defaults
bzip2 1.0.6 h14c3975_5 defaults
ca-certificates 2019.5.15 0 defaults
certifi 2019.6.16 py37_0 defaults
cffi 1.12.3 py37h2e261b9_0 defaults
chardet 3.0.4 py37_1 defaults
clyent 1.2.2 py37_1 defaults
conda 4.7.5 py37_0 defaults
conda-build 3.18.5 py37_0 defaults
conda-concourse-ci 0.1.0 pypi_0 pypi
conda-package-handling 1.3.10 py37_0 defaults
cryptography 2.7 py37h1ba5d50_0 defaults
curl 7.64.1 hbc83047_0 defaults
decorator 4.4.0 py37_1 defaults
expat 2.2.6 he6710b0_0 defaults
filelock 3.0.10 py37_0 defaults
gcc_impl_linux-64 7.3.0 habb00fd_1 defaults
gcc_linux-64 7.3.0 h553295d_7 defaults
git 2.20.1 pl526hacde149_0 defaults
glob2 0.6 py37_1 defaults
gxx_impl_linux-64 7.3.0 hdf63c60_1 defaults
gxx_linux-64 7.3.0 h553295d_7 defaults
icu 58.2 h9c2bf20_1 defaults
idna 2.8 py37_0 defaults
ipython_genutils 0.2.0 py37_0 defaults
jinja2 2.10.1 py37_0 defaults
jsonschema 3.0.1 py37_0 defaults
jupyter_core 4.4.0 py37_0 defaults
krb5 1.16.1 h173b8e3_7 defaults
libarchive 3.3.3 h5d8350f_5 defaults
libcurl 7.64.1 h20c2e04_0 defaults
libedit 3.1.20181209 hc058e9b_0 defaults
libffi 3.2.1 hd88cf55_4 defaults
libgcc-ng 8.2.0 hdf63c60_1 defaults
liblief 0.9.0 h7725739_2 defaults
libssh2 1.8.2 h1ba5d50_0 defaults
libstdcxx-ng 8.2.0 hdf63c60_1 defaults
libxml2 2.9.9 he19cac6_0 defaults
lz4-c 1.8.1.2 h14c3975_0 defaults
lzo 2.10 h49e0be7_2 defaults
markupsafe 1.1.1 py37h7b6447c_0 defaults
nbformat 4.4.0 py37_0 defaults
ncurses 6.1 he6710b0_1 defaults
openssl 1.1.1c h7b6447c_1 defaults
patchelf 0.9 he6710b0_3 defaults
perl 5.26.2 h14c3975_0 defaults
pip 19.1.1 py37_0 defaults
pkginfo 1.5.0.1 py37_0 defaults
psutil 5.6.2 py37h7b6447c_0 defaults
py-lief 0.9.0 py37h7725739_2 defaults
pycosat 0.6.3 py37h14c3975_0 defaults
pycparser 2.19 py37_0 defaults
pyopenssl 19.0.0 py37_0 defaults
pyrsistent 0.14.11 py37h7b6447c_0 defaults
pysocks 1.7.0 py37_0 defaults
python 3.7.3 h0371630_0 defaults
python-dateutil 2.8.0 py37_0 defaults
python-libarchive-c 2.8 py37_6 defaults
pytz 2019.1 py_0 defaults
pyyaml 5.1 py37h7b6447c_0 defaults
readline 7.0 h7b6447c_5 defaults
requests 2.22.0 py37_0 defaults
ruamel_yaml 0.15.46 py37h14c3975_0 defaults
setuptools 41.0.1 py37_0 defaults
six 1.12.0 py37_0 defaults
soupsieve 1.8 py37_0 defaults
sqlite 3.28.0 h7b6447c_0 defaults
tk 8.6.8 hbc83047_0 defaults
tqdm 4.31.1 py37_1 defaults
traitlets 4.3.2 py37_0 defaults
urllib3 1.24.2 py37_0 defaults
wheel 0.33.4 py37_0 defaults
xz 5.2.4 h14c3975_4 defaults
yaml 0.1.7 had09818_2 defaults
zlib 1.2.11 h7b6447c_3 defaults
zstd 1.3.7 h0b5b093_0 defaults
jjhelmus
All 3 comments
@ocefpaf I believe you mentioned this bug on the conda-forge gitter channel. A workaround if you need to downgrade conda from 4.7 is to use CONDA_AUTO_UPDATE_CONDA=0 or set the corresponding configuration value in .condarc.
jjhelmus
on 26 Jun 2019
Thanks! That worked nicely.
ocefpaf
on 26 Jun 2019
I just hit this problem as well (a "problem" because conda 4.7.5 seems several other bugs that required me to roll back). Another workaround (if you didn't start with 4.7.5) is to use conda list --revisions and conda install --revision <rev> to roll back to the environment just before you upgraded to 4.7.5.
wshanks
on 1 Jul 2019
Related issues
ark00
路
3Comments
kalefranz
路
3Comments
gnomic
路
3Comments
michaelaye
路
3Comments
mhlr
路
3Comments
Most helpful comment
@ocefpaf I believe you mentioned this bug on the conda-forge gitter channel. A workaround if you need to downgrade conda from 4.7 is to use
CONDA_AUTO_UPDATE_CONDA=0or set the corresponding configuration value in .condarc.