问题
A little backstory. I was trying to install a git project csv2ofx and it has a requirement, pkutils. In my haste I installed peakutils. (I can only fine pkutils on pypi, but that's another story.)
> conda install -c anaconda peakutils.
[...]
The following packages will be downloaded:
package | build
---------------------------|-----------------
bzip2-1.0.8 | he774522_0 150 KB anaconda
ca-certificates-2019.5.15 | 0 166 KB anaconda
certifi-2019.6.16 | py36_0 155 KB anaconda
conda-4.7.10 | py36_0 3.0 MB anaconda
conda-package-handling-1.3.11| py36_0 280 KB anaconda
libarchive-3.3.3 | h0643e63_5 1.4 MB anaconda
libiconv-1.15 | h1df5818_7 664 KB anaconda
libxml2-2.9.9 | h464c3ec_0 3.5 MB anaconda
lz4-c-1.8.1.2 | h2fa13f4_0 217 KB anaconda
lzo-2.10 | h6df0209_2 154 KB anaconda
peakutils-1.3.2 | py_0 10 KB conda-forge
python-libarchive-c-2.8 | py36_11 23 KB anaconda
scipy-1.2.1 | py36h29ff71c_0 14.0 MB anaconda
tqdm-4.32.1 | py_0 48 KB anaconda
xz-5.2.4 | h2fa13f4_4 812 KB anaconda
zlib-1.2.11 | h62dcd97_3 128 KB anaconda
zstd-1.3.7 | h508b16e_0 536 KB anaconda
------------------------------------------------------------
Total: 25.3 MB
The following NEW packages will be INSTALLED:
bzip2 anaconda/win-64::bzip2-1.0.8-he774522_0
conda-package-han~ anaconda/win-64::conda-package-handling-1.3.11-py36_0
libarchive anaconda/win-64::libarchive-3.3.3-h0643e63_5
libiconv anaconda/win-64::libiconv-1.15-h1df5818_7
libxml2 anaconda/win-64::libxml2-2.9.9-h464c3ec_0
lz4-c anaconda/win-64::lz4-c-1.8.1.2-h2fa13f4_0
lzo anaconda/win-64::lzo-2.10-h6df0209_2
peakutils conda-forge/noarch::peakutils-1.3.2-py_0
python-libarchive~ anaconda/win-64::python-libarchive-c-2.8-py36_11
tqdm anaconda/noarch::tqdm-4.32.1-py_0
xz anaconda/win-64::xz-5.2.4-h2fa13f4_4
zlib anaconda/win-64::zlib-1.2.11-h62dcd97_3
zstd anaconda/win-64::zstd-1.3.7-h508b16e_0
The following packages will be UPDATED:
ca-certificates 2019.1.23-0 --> 2019.5.15-0
certifi 2019.3.9-py36_0 --> 2019.6.16-py36_0
conda 4.6.14-py36_0 --> 4.7.10-py36_0
scipy pkgs/main::scipy-1.0.0-py36h1260518_0 --> anaconda::scipy-1.2.1-py36h29ff71c_0
Next, from inside the package directory, I tried to pip install the original git package, csv2ofx and this happened:
> pip install .
[...]
PackagesNotFoundError: The following packages are missing from the target environment:
- defaults/win-64::vs2015_runtime==15.5.2=3
- defaults/win-64::vc==14.1=h0510ff6_3
And at that point, I couldn't get conda to do anything (ie. conda list) I'm running python 3.6 in Miniconda3_64 on Windows 10.
Any idea what happened here? Any information in the packages I'm installing that would give you an idea that I was going to clobber conda?
来源：https://stackoverflow.com/questions/57340661/why-would-conda-package-installation-and-update-clobber-conda