CondaError: Cannot link a source that does not exist. C:\Users\...\Anaconda3\Scripts\conda.exe #6057

AVSuni · 2017-10-02T15:08:43Z

I get this error when trying to conda install tqdm. Pip install works fine. However, when trying conda install spacy, I still get the same error because the conda installation for spacy attempts to conda install tqdm.

kalefranz · 2017-10-02T21:01:14Z

Do you still get the error after running conda clean --all --yes?

kalefranz · 2017-10-02T21:02:35Z

If you need additional help, please include more details. At a minimum, conda info, the command that gave the error, and the full stack trace. Whatever details are necessary to independently reproduce the issue you're seeing.

AVSuni · 2017-10-03T09:30:30Z

Thanks @kalefranz. I had tried Conda clean --all. The error went away when I updated everything with conda update anaconda

jochem4207 · 2017-10-04T07:44:17Z

Had the same error and @AVSuni thank you so much! Also thanks to @kalefranz (it occured when installing spacy)

…that does not exist'

minrk · 2017-10-31T11:27:25Z

We've run into this with nbconvert as well. I setup a repo to do some testing:

On AppVeyor, installing nbconvert from conda-forge has started failing with:

ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'conda-forge::nbconvert-5.3.1-py_1'.
CondaError: Cannot link a source that does not exist. C:\Miniconda-x64\Scripts\conda.exe
Attempting to roll back.
CondaError: Cannot link a source that does not exist. C:\Miniconda-x64\Scripts\conda.exe

Possibly relevant bits of info:

conda clean --all does not help
Failure only occurs on Windows + Python 2
It only occurs when conda is upgraded or downgraded during the same install. Disabling auto_update_conda fixes the issue
Appears to be a regression between conda 4.3.8 and 4.3.9
nbconvert has noarch: python and an entry-point, as does tqdm
installing last nbconvert release prior to noarch has no issue
installing other, lighter packages with noarch + entrypoint (geojsonio) doesn't reproduce the issue so there might be something else special about nbconvert+tqdm, or it could just be the ordering of packages causing the correct sequence of events to occur that conda.exe is removed while it's attempted to be linked.

dhirschfeld · 2017-11-07T23:59:35Z

I'm seeing this in damianavila/RISE#315 on win64 / py36 / conda 4.3.22

conda clean --all doesn't help - same error.

Reverting to conda=4.2.16 "fixed" the problem for me.

Whereby "fixed" means the broken post-install script didn't run. That was easily fixed with a jupyter nbextension enable ... command so perhaps thre should be an --ignore-errors flag to allow users to proceed at their own risk rather than forcing them to downgrade conda to do so.

mccolem19 · 2017-11-08T00:28:46Z

Hi all, I've run into this issue while trying to install the "tweepy" package. [win10 / conda 4.3.30 / Python 3.6.3]

Command: conda install -c conda-forge tweepy

Error:
oauthlib-2.0.6 100% |###############################| Time: 0:00:00 0.00 B/s
conda-4.3.29-p 100% |###############################| Time: 0:00:00 3.20 MB/s
requests-oauth 100% |###############################| Time: 0:00:00 0.00 B/s
tweepy-3.5.0-p 100% |###############################| Time: 0:00:00 3.37 MB/s
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'conda-forge::pyjwt-1.5.3-py_0'.
CondaError: Cannot link a source that does not exist. C:\Users\Maurice\Anaconda3\Scripts\conda.exe
Running conda clean --packages may resolve your problem.
Attempting to roll back.

CondaError: Cannot link a source that does not exist. C:\Users\Maurice\Anaconda3\Scripts\conda.exe
Running conda clean --packages may resolve your problem.
Error End

I tried the above steps of conda clean --all --yes and conda update anaconda but I didn't have any success.
Any recommendations on what else I could try? Thanks.

kalefranz · 2017-11-08T01:27:25Z

It's clear to me that this is an issue with entry point creation for python noarch packages on windows. Looking into it.

kalefranz · 2017-11-08T01:44:24Z

or it could just be the ordering of packages causing the correct sequence of events to occur that conda.exe is removed while it's attempted to be linked.

That's exactly what's happening.

DEBUG conda.core.link:create_from_dists(119): instantiating UnlinkLinkTransaction with
  target_prefix: C:\Users\builder\Miniconda3
  unlink_dists:
    defaults::conda-4.3.24-py36_0
    defaults::conda-env-2.6.0-0
    defaults::openssl-1.0.2l-vc14_0
  link_dists:
    conda-forge::ca-certificates-2017.7.27.1-0
    conda-forge::conda-env-2.6.0-0
    conda-forge::openssl-1.0.2l-vc14_0
    conda-forge::vc-14-0
    conda-forge::pyjwt-1.5.3-py_0
    conda-forge::conda-4.3.29-py36_0

Sometime around 4.3.8, we removed the embedded cli-64.exe / cli-32.exe files like what's in conda-build (https://github.com/conda/conda-build/tree/master/conda_build), realizing we already had the identical python entry point binary already available with conda.exe.

As you can see in the above operation plan, conda is unlinked, but then installed last, after pyjwt, which is what needs the entry point binary to hard link.

cspipaon · 2017-11-21T13:21:55Z

Hi I'm kind of new to Python, completely new to Github and I have the same problem as @mccolem19. Was it possible to resolve the problem? Could someone give me a n00b-proof guideline?
Thanks

jbrant · 2017-11-22T02:19:22Z

Are there any work-arounds for this?

dhirschfeld · 2017-11-22T02:40:33Z

You could try:

conda install conda=4.2.16

...until conda is released with the bugfix.

fix #6057 unlink-link order for python noarch packages on windows 4.4.x

fix #6057 unlink-link order for python noarch packages on windows

jsantanders · 2018-12-18T08:09:18Z

Thanks, @henryfbp your solution work for me.

muhammediqbal · 2019-01-21T10:51:32Z

Fails under conda install -c conda-forge -c dlr-sc -c pythonocc -c oce pythonocc-core==0.18.1 automat on Windows 7, conda 4.5.11

I've done conda update anaconda and conda config --add pinned_packages defaults::conda.

The automat package seems responsible:
ERROR conda.core.link:_execute(502): An error occurred while installing package 'conda-forge/label/g
cc7::automat-0.7.0-py_1'.
EDIT: Succeeds under conda install -c conda-forge -c dlr-sc -c pythonocc -c oce automat==0.6.0 pythonocc-core==0.18.1!

Seems to be an issue with automat's most recent version, 0.7.0, not being released for Windows.

How can i amend your install command for scrapy as i am also having an issue with installing automats recent version ?

meltingscales · 2019-01-21T22:54:31Z

Fails under conda install -c conda-forge -c dlr-sc -c pythonocc -c oce pythonocc-core==0.18.1 automat on Windows 7, conda 4.5.11
I've done conda update anaconda and conda config --add pinned_packages defaults::conda.
The automat package seems responsible:
ERROR conda.core.link:_execute(502): An error occurred while installing package 'conda-forge/label/g
cc7::automat-0.7.0-py_1'.
EDIT: Succeeds under conda install -c conda-forge -c dlr-sc -c pythonocc -c oce automat==0.6.0 pythonocc-core==0.18.1!
Seems to be an issue with automat's most recent version, 0.7.0, not being released for Windows.
How can i amend your install command for scrapy as i am also having an issue with installing automats recent version ?

That I'm not sure of...I don't use scrapy.

Try conda install -c conda-forge -c dlr-sc -c pythonocc -c oce automat==0.6.0?

That command shouldn't install pythonocc-core, which is some CAD Python library.

mfansler · 2019-03-21T19:26:19Z

I find it strange that you are all Windows users, but it seems that Conda is showing preference to install from the noarch platform channel, even though in the nbconvert and automat cases there is clearly a win-64 build of the latest version. When I --dry-run install these on OSX, Conda resolves to the osx-64 builds.

I wonder, would installing the platform-specific build make a difference? For the Automat example (@henryfbp):

conda install conda-forge/win-64::automat

nanqiaobei · 2019-07-10T11:10:14Z

Cannot link a source that does not exist. D:\Anaconda3\Scripts\conda.exe
sorry i don"t know to slove this problem ,i try to conda clean --all then conda update anaconda but don't work,can you help me thank

meltingscales · 2019-07-11T01:58:50Z

Cannot link a source that does not exist. D:\Anaconda3\Scripts\conda.exe
sorry i don"t know to slove this problem ,i try to conda clean --all then conda update anaconda but don't work,can you help me thank

Does conda install -c conda-forge -c dlr-sc -c pythonocc -c oce automat==0.6.0 work for you?

FergusonShuai · 2019-07-31T16:20:44Z

Tried to run conda update conda but still get error message:
menuinst-1.4.1 100% |###############################| Time: 0:00:00 6.03 MB/s openssl-1.0.2p 100% |###############################| Time: 0:00:00 18.05 MB/s freetds-1.00.9 100% |###############################| Time: 0:00:00 14.18 MB/s libxml2-2.9.8- 100% |###############################| Time: 0:00:00 10.65 MB/s pymssql-2.1.4- 100% |###############################| Time: 0:00:00 12.23 MB/s ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.32.1-py_0'. CondaError: Cannot link a source that does not exist. C:\ProgramData\Anaconda3\S cripts\conda.exe Running conda clean --packages` may resolve your problem.
Attempting to roll back.

CondaError: Cannot link a source that does not exist. C:\ProgramData\Anaconda3\S
cripts\conda.exe
Running conda clean --packages may resolve your problem.`

shubing13 · 2019-08-04T07:13:28Z

Do you still get the error after running conda clean --all --yes?
And here's my conda info:
after running the 'conda clean --all --y' the problem still remains
active environment : base
active env location : D:\Anaconda3
shell level : 1
user config file : C:\Users\shubi.condarc
populated config files : C:\Users\shubi.condarc
conda version : 4.6.14
conda-build version : 3.10.5
python version : 3.6.5.final.0
base environment : D:\Anaconda3 (writable)
channel URLs : https://repo.anaconda.com/pkgs/main/win-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/free/win-64
https://repo.anaconda.com/pkgs/free/noarch
https://repo.anaconda.com/pkgs/r/win-64
https://repo.anaconda.com/pkgs/r/noarch
https://repo.anaconda.com/pkgs/msys2/win-64
https://repo.anaconda.com/pkgs/msys2/noarch
package cache : D:\Anaconda3\pkgs
C:\Users\shubi.conda\pkgs
C:\Users\shubi\AppData\Local\conda\conda\pkgs
envs directories : D:\Anaconda3\envs
C:\Users\shubi.conda\envs
C:\Users\shubi\AppData\Local\conda\conda\envs
platform : win-64
user-agent : conda/4.6.14 requests/2.18.4 CPython/3.6.5 Windows/10 Windows/10.0.17134
administrator : False
netrc file : None
offline mode : False

jason-s · 2019-08-21T23:30:30Z

I have more or less the same issue. I'm on Windows 10 using 64-bit python. I need to install Anaconda 5.0 to setup a conda environment with a particular fixed set of package versions for my application. The more recent version (2019.1? 2017.1? I forget) is somehow not compatible and I cannot install that set of versions for some reason, so I had to go back to install the Anaconda 5.0.

But then when I go to do "conda install markdown" it fails with this issue.

>conda install markdown
Fetching package metadata .............
Solving package specifications: .

Package plan for installation in environment c:\app\python\anaconda\2:

The following NEW packages will be INSTALLED:

    conda-package-handling: 1.3.11-py27_0
    libarchive:             3.3.3-h96cdc4e_5
    lz4-c:                  1.8.1.2-h3cc03e0_0
    markdown:               3.1.1-py27_0
    python-libarchive-c:    2.8-py27_13
    tqdm:                   4.32.1-py_0
    xz:                     5.2.4-h3cc03e0_4
    zstd:                   1.3.7-h1b0e4d7_0

The following packages will be UPDATED:

    bzip2:                  1.0.6-vc9h563fc2e_1   --> 1.0.8-h0c8e037_0
    conda:                  4.3.30-py27he817781_0 --> 4.7.11-py27_0
    conda-env:              2.6.0-h36134e3_1      --> 2.6.0-1
    libxml2:                2.9.4-vc9h17753f3_5   --> 2.9.9-h325896a_0
    menuinst:               1.4.10-py27hf5e3df7_0 --> 1.4.16-py27h0c8e037_0
    openssl:                1.0.2l-vc9h02d068b_2  --> 1.0.2s-h0c8e037_0
    pycosat:                0.6.2-py27h96ae2ec_1  --> 0.6.3-py27h0c8e037_0

Proceed ([y]/n)? y

menuinst-1.4.1 100% |###############################| Time: 0:00:00  20.90 MB/s
conda-env-2.6. 100% |###############################| Time: 0:00:00   2.82 MB/s
lz4-c-1.8.1.2- 100% |###############################| Time: 0:00:00  23.91 MB/s
openssl-1.0.2s 100% |###############################| Time: 0:00:00  35.50 MB/s
xz-5.2.4-h3cc0 100% |###############################| Time: 0:00:00  27.68 MB/s
libxml2-2.9.9- 100% |###############################| Time: 0:00:00  45.09 MB/s
pycosat-0.6.3- 100% |###############################| Time: 0:00:00  20.61 MB/s
tqdm-4.32.1-py 100% |###############################| Time: 0:00:00  16.33 MB/s
markdown-3.1.1 100% |###############################| Time: 0:00:00  26.68 MB/s
python-libarch 100% |###############################| Time: 0:00:00   7.97 MB/s
conda-package- 100% |###############################| Time: 0:00:00  20.48 MB/s
conda-4.7.11-p 100% |###############################| Time: 0:00:00  31.15 MB/s
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.32.1-py_0'.
CondaError: Cannot link a source that does not exist. c:\app\python\anaconda\2\Scripts\conda.exe
Running `conda clean --packages` may resolve your problem.
Attempting to roll back.


CondaError: Cannot link a source that does not exist. c:\app\python\anaconda\2\Scripts\conda.exe
Running `conda clean --packages` may resolve your problem.

for reference:

>conda list conda
# packages in environment at c:\app\python\anaconda\2:
#
anaconda                  5.0.1            py27hdb50712_1
anaconda-client           1.6.5            py27h9642776_0
anaconda-navigator        1.6.9            py27hd588ecf_0
anaconda-project          0.8.0            py27h56b7296_0
conda                     4.3.30           py27he817781_0
conda-build               3.0.27           py27hdc961ca_0
conda-env                 2.6.0                h36134e3_1
conda-verify              2.0.0            py27h5217224_0

It looks like the conda=4.2.16 does the trick and removes these bizarre dependencies and errors:

>conda install conda=4.2.16 markdown -c anaconda
Fetching package metadata ...........
Solving package specifications: ..........

Package plan for installation in environment c:\app\python\anaconda\2:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    markdown-3.1.1             |           py27_0         130 KB  anaconda
    conda-4.2.16               |           py27_0         468 KB  anaconda
    ------------------------------------------------------------
                                           Total:         599 KB

The following NEW packages will be INSTALLED:

    markdown: 3.1.1-py27_0  anaconda

The following packages will be SUPERCEDED by a higher-priority channel:

    conda:    4.2.16-py27_0          --> 4.2.16-py27_0 anaconda

Proceed ([y]/n)? y

It doesn't quite work the same without -c anaconda (uninstall step skipped here) --- I get an older version of markdown.

>conda install conda=4.2.16 markdown
Fetching package metadata .........
Solving package specifications: ..........

Package plan for installation in environment c:\app\python\anaconda\2:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    conda-4.2.16               |           py27_0         468 KB

The following NEW packages will be INSTALLED:

    markdown: 2.6.9-py27_0

The following packages will be SUPERCEDED by a higher-priority channel:

    conda:    4.2.16-py27_0 anaconda --> 4.2.16-py27_0

Proceed ([y]/n)? y

Pruning fetched packages from the cache ...
Fetching packages ...
conda-4.2.16-p 100% |###############################| Time: 0:00:00  29.97 MB/s
Extracting packages ...
[      COMPLETE      ]|##################################################| 100%
Unlinking packages ...
[      COMPLETE      ]|##################################################| 100%
Linking packages ...
[      COMPLETE      ]|##################################################| 100%

JeanReneN · 2019-09-05T04:56:33Z

Thanks. It works.

QtRoS · 2019-10-21T07:04:40Z

conda update conda finally did the trick.

sdk2116 · 2020-02-12T18:45:50Z

for those of you who are still stuck on this issue:
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.32.1-py_0'.
CondaError: Cannot link a source that does not exist. C:..........\conda.exe
Running conda clean --packages may resolve your problem.

running conda install tqdm -f before running conda update conda solved the issue for me

ojoayokunnumi · 2020-05-20T06:41:36Z

reverting to 4.2.16 worked for me
conda install conda=4.2.16 markdown -c anaconda

15703396763 · 2020-06-11T06:24:14Z

I am trying to install "conda install -c plotly plotly-orca==1.2.1 psutil requests" in anaconda prompt but its not working properly it showed the following problem.

ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.46.0-py_0'. CondaError: Cannot link a source that does not exist. D:\Anaconda3\Scripts\conda.exe Attempting to roll back.

CondaError: Cannot link a source that does not exist. D:\Anaconda3\Scripts\conda.exe

(D:\Anaconda3) C:\Users\Dell\Documents>

jimtalksdata · 2020-09-20T21:01:04Z

for those of you who are still stuck on this issue:
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.32.1-py_0'. CondaError: Cannot link a source that does not exist. C:..........\conda.exe Running conda clean --packages may resolve your problem.

running conda install tqdm -f before running conda update conda solved the issue for me

This worked for me.

baileywellen · 2020-10-07T20:51:08Z

I have more or less the same issue. I'm on Windows 10 using 64-bit python. I need to install Anaconda 5.0 to setup a conda environment with a particular fixed set of package versions for my application. The more recent version (2019.1? 2017.1? I forget) is somehow not compatible and I cannot install that set of versions for some reason, so I had to go back to install the Anaconda 5.0.

But then when I go to do "conda install markdown" it fails with this issue.

>conda install markdown
Fetching package metadata .............
Solving package specifications: .

Package plan for installation in environment c:\app\python\anaconda\2:

The following NEW packages will be INSTALLED:

    conda-package-handling: 1.3.11-py27_0
    libarchive:             3.3.3-h96cdc4e_5
    lz4-c:                  1.8.1.2-h3cc03e0_0
    markdown:               3.1.1-py27_0
    python-libarchive-c:    2.8-py27_13
    tqdm:                   4.32.1-py_0
    xz:                     5.2.4-h3cc03e0_4
    zstd:                   1.3.7-h1b0e4d7_0

The following packages will be UPDATED:

    bzip2:                  1.0.6-vc9h563fc2e_1   --> 1.0.8-h0c8e037_0
    conda:                  4.3.30-py27he817781_0 --> 4.7.11-py27_0
    conda-env:              2.6.0-h36134e3_1      --> 2.6.0-1
    libxml2:                2.9.4-vc9h17753f3_5   --> 2.9.9-h325896a_0
    menuinst:               1.4.10-py27hf5e3df7_0 --> 1.4.16-py27h0c8e037_0
    openssl:                1.0.2l-vc9h02d068b_2  --> 1.0.2s-h0c8e037_0
    pycosat:                0.6.2-py27h96ae2ec_1  --> 0.6.3-py27h0c8e037_0

Proceed ([y]/n)? y

menuinst-1.4.1 100% |###############################| Time: 0:00:00  20.90 MB/s
conda-env-2.6. 100% |###############################| Time: 0:00:00   2.82 MB/s
lz4-c-1.8.1.2- 100% |###############################| Time: 0:00:00  23.91 MB/s
openssl-1.0.2s 100% |###############################| Time: 0:00:00  35.50 MB/s
xz-5.2.4-h3cc0 100% |###############################| Time: 0:00:00  27.68 MB/s
libxml2-2.9.9- 100% |###############################| Time: 0:00:00  45.09 MB/s
pycosat-0.6.3- 100% |###############################| Time: 0:00:00  20.61 MB/s
tqdm-4.32.1-py 100% |###############################| Time: 0:00:00  16.33 MB/s
markdown-3.1.1 100% |###############################| Time: 0:00:00  26.68 MB/s
python-libarch 100% |###############################| Time: 0:00:00   7.97 MB/s
conda-package- 100% |###############################| Time: 0:00:00  20.48 MB/s
conda-4.7.11-p 100% |###############################| Time: 0:00:00  31.15 MB/s
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.32.1-py_0'.
CondaError: Cannot link a source that does not exist. c:\app\python\anaconda\2\Scripts\conda.exe
Running `conda clean --packages` may resolve your problem.
Attempting to roll back.


CondaError: Cannot link a source that does not exist. c:\app\python\anaconda\2\Scripts\conda.exe
Running `conda clean --packages` may resolve your problem.

for reference:

>conda list conda
# packages in environment at c:\app\python\anaconda\2:
#
anaconda                  5.0.1            py27hdb50712_1
anaconda-client           1.6.5            py27h9642776_0
anaconda-navigator        1.6.9            py27hd588ecf_0
anaconda-project          0.8.0            py27h56b7296_0
conda                     4.3.30           py27he817781_0
conda-build               3.0.27           py27hdc961ca_0
conda-env                 2.6.0                h36134e3_1
conda-verify              2.0.0            py27h5217224_0

It looks like the conda=4.2.16 does the trick and removes these bizarre dependencies and errors:

>conda install conda=4.2.16 markdown -c anaconda
Fetching package metadata ...........
Solving package specifications: ..........

Package plan for installation in environment c:\app\python\anaconda\2:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    markdown-3.1.1             |           py27_0         130 KB  anaconda
    conda-4.2.16               |           py27_0         468 KB  anaconda
    ------------------------------------------------------------
                                           Total:         599 KB

The following NEW packages will be INSTALLED:

    markdown: 3.1.1-py27_0  anaconda

The following packages will be SUPERCEDED by a higher-priority channel:

    conda:    4.2.16-py27_0          --> 4.2.16-py27_0 anaconda

Proceed ([y]/n)? y

It doesn't quite work the same without -c anaconda (uninstall step skipped here) --- I get an older version of markdown.

>conda install conda=4.2.16 markdown
Fetching package metadata .........
Solving package specifications: ..........

Package plan for installation in environment c:\app\python\anaconda\2:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    conda-4.2.16               |           py27_0         468 KB

The following NEW packages will be INSTALLED:

    markdown: 2.6.9-py27_0

The following packages will be SUPERCEDED by a higher-priority channel:

    conda:    4.2.16-py27_0 anaconda --> 4.2.16-py27_0

Proceed ([y]/n)? y

Pruning fetched packages from the cache ...
Fetching packages ...
conda-4.2.16-p 100% |###############################| Time: 0:00:00  29.97 MB/s
Extracting packages ...
[      COMPLETE      ]|##################################################| 100%
Unlinking packages ...
[      COMPLETE      ]|##################################################| 100%
Linking packages ...
[      COMPLETE      ]|##################################################| 100%

this worked for me, thanks

mountain-shui · 2021-04-24T10:33:16Z

for those of you who are still stuck on this issue:
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.32.1-py_0'. CondaError: Cannot link a source that does not exist. C:..........\conda.exe Running conda clean --packages may resolve your problem.

running conda install tqdm -f before running conda update conda solved the issue for me

thanks,this worked for me!

BAkrseddik · 2021-04-29T00:46:17Z

i can't install jupyter or numpy and always give me this msg
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::tqdm-4.59.0-pyhd3eb1b0_1'.
CondaError: Cannot link a source that does not exist. C:\Users\20100\Anaconda3\Scripts\conda.exe
Running conda clean --packages may resolve your problem.
Attempting to roll back.
platform : win-64
conda version : 4.3.30
conda is private : False
conda-env version : 4.3.30
conda-build version : not installed
python version : 3.6.1.final.0
requests version : 2.14.2
root environment : C:\Users\20100\Anaconda3 (writable)
default environment : C:\Users\20100\Anaconda3
envs directories : C:\Users\20100\Anaconda3\envs
C:\Users\20100\AppData\Local\conda\conda\envs
C:\Users\20100.conda\envs
package cache : C:\Users\20100\Anaconda3\pkgs
C:\Users\20100\AppData\Local\conda\conda\pkgs
channel URLs : https://repo.continuum.io/pkgs/main/win-64
https://repo.continuum.io/pkgs/main/noarch
https://repo.continuum.io/pkgs/free/win-64
https://repo.continuum.io/pkgs/free/noarch
https://repo.continuum.io/pkgs/r/win-64
https://repo.continuum.io/pkgs/r/noarch
https://repo.continuum.io/pkgs/pro/win-64
https://repo.continuum.io/pkgs/pro/noarch
https://repo.continuum.io/pkgs/msys2/win-64
https://repo.continuum.io/pkgs/msys2/noarch
config file : None
netrc file : None
offline mode : False
user-agent : conda/4.3.30 requests/2.14.2 CPython/3.6.1 Windows/10 Windows/10.0.18362
administrator : False

Per this comment: conda/conda#6057 (comment) According to --help, it will "Remove index cache, lock files, unused cache packages, and tarballs." I don't think this will have an effect since we should be installing into a shiny new VM for CI?

The issue that appears to be happening, where during the update of conda conda.exe is removed and not put back before it's needed by a package (see conda/conda#6057), but I think it's supposed to be solved in a later version of conda? First I need to find out what is installed, hence this change.

The issue that appears to be happening is that during the update of conda conda.exe is removed and not put back before it's needed by a package (see conda/conda#6057). I think it's supposed to be solved in a later version of conda? First I need to find out what is installed, hence this change.

It's possible conda is attempting to install the noarch package version per conda/conda#6057 (comment). So, try deliberately specifying that we want the win64 version installed. Of course this isn't portable to Linux and MacOS when we hopefully add those, but we can deal with special casing later if necessary. Let's just find what the issue is and what works.

Per this comment: conda/conda#6057 (comment) I'm curious how our current situation might differ from the one in the issue. It appears that the symptoms are the same, but are the causes? So far I've been trying out suggestions based on a little guessing and research, but it's getting to the point where doing a deep dive and really grokking what's happening might be more productive than quickly firing off half thought through fix attempts.

github-actions · 2022-04-29T06:01:45Z

Hi there, thank you for your contribution!

This issue has been automatically locked because it has not had recent activity after being closed.

Please open a new issue if needed.

Thanks!

kalefranz added a commit to kalefranz/conda that referenced this issue Oct 5, 2017

fix conda#6057 add additional detail for message 'cannot link source …

5856da4

…that does not exist'

kalefranz mentioned this issue Oct 5, 2017

fix #6057 add additional detail for message 'cannot link source that does not exist' #6082

Merged

kalefranz added a commit to kalefranz/conda that referenced this issue Oct 11, 2017

fix conda#6057 add additional detail for message 'cannot link source …

508ec0c

…that does not exist'

kalefranz added type::bug describes erroneous operation, use severity::* to classify the type source::community catch-all for issues filed by community members labels Nov 8, 2017

kalefranz added a commit to kalefranz/conda that referenced this issue Nov 8, 2017

fix conda#6057 unlink-link order for python noarch packages on windows

f02c294

kalefranz added a commit to kalefranz/conda that referenced this issue Nov 8, 2017

fix conda#6057 unlink-link order for python noarch packages on windows

e9ff5a9

kalefranz mentioned this issue Nov 8, 2017

fix #6057 unlink-link order for python noarch packages on windows #6277

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kalefranz added a commit to kalefranz/conda that referenced this issue Nov 8, 2017

fix conda#6057 unlink-link order for python noarch packages on windows

624596d

kalefranz added a commit to kalefranz/conda that referenced this issue Nov 8, 2017

fix conda#6057 unlink-link order for python noarch packages on windows

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kalefranz closed this as completed in db01899 Nov 13, 2017

mjscosta mentioned this issue Nov 15, 2017

CondaError: Cannot link a source that does not exist. C:\Miniconda\Scripts\conda.exe conda-forge/conda-smithy#612

Closed

dhirschfeld mentioned this issue Dec 11, 2017

Update to 0.0.21 conda-forge/prometheus_client-feedstock#4

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kalefranz added a commit to kalefranz/conda that referenced this issue Dec 19, 2017

fix conda#6057 unlink-link order for python noarch packages on windows

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kalefranz added a commit to kalefranz/conda that referenced this issue Dec 19, 2017

fix conda#6057 unlink-link order for python noarch packages on windows

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mcg1969 added a commit that referenced this issue Dec 20, 2017

Merge pull request #6494 from kalefranz/fix-6057-4.4.x

bb7b264

fix #6057 unlink-link order for python noarch packages on windows 4.4.x

mcg1969 added a commit that referenced this issue Dec 20, 2017

Merge pull request #6277 from kalefranz/fix-6057-2

c12f2e8

fix #6057 unlink-link order for python noarch packages on windows

danineamati mentioned this issue Aug 11, 2020

Actual trajectory optimization code danineamati/TrajOptSOCPs.jl#2

Merged

lhoestq mentioned this issue Aug 31, 2021

Fix windows CI CondaError huggingface/datasets#2855

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CondaError: Cannot link a source that does not exist. C:\Users\...\Anaconda3\Scripts\conda.exe #6057

CondaError: Cannot link a source that does not exist. C:\Users\...\Anaconda3\Scripts\conda.exe #6057

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CondaError: Cannot link a source that does not exist. C:\Users\...\Anaconda3\Scripts\conda.exe #6057

CondaError: Cannot link a source that does not exist. C:\Users\...\Anaconda3\Scripts\conda.exe #6057

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nanqiaobei commented Jul 10, 2019

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