title: Anaconda missing matplotlib
body: <pre><code>G:\Git\advsol\projects\autotune&gt;conda env create -f env.yml -n auto-tune
  Using Anaconda API: https://api.anaconda.org
  Fetching package metadata .................
  
  ResolvePackageNotFound:
    - matplotlib 2.1.1 py35_0
  
  
  G:\Git\advsol\projects\autotune&gt;
  </code></pre>
  
  <p>I have tried "conda install matplotlib==2.1.1"
  it doesn't work </p>
  
  <p>this is the env.yml file </p>
  
  <pre><code>name: auto-tune
  channels:
  - menpo
  - conda-forge
  - defaults
  dependencies:
  - backports=1.0=py35_1
  - backports.functools_lru_cache=1.4=py35_1
  - boost-cpp=1.64.0=vc14_1
  - ca-certificates=2017.7.27.1=0
  - certifi=2017.7.27.1=py35_0
  - cloudpickle=0.4.0=py35_0
  - colorama=0.3.9=py35_0
  - cycler=0.10.0=py35_0
  - dask-core=0.16.0=py_0
  - decorator=4.1.2=py35_0
  - eigen=3.3.3=0
  - expat=2.2.5=vc14_0
  - freetype=2.7=vc14_2
  - future=0.16.0=py35_0
  - icu=58.1=vc14_1
  - imageio=2.2.0=py35_0
  - ipykernel=4.6.1=py35_0
  - ipyparallel=6.0.2=py35_0
  - ipython=6.2.1=py35_0
  - ipython_genutils=0.2.0=py35_0
  - jedi=0.10.2=py35_0
  - jpeg=9b=vc14_2
  - jupyter_client=5.2.2=py35_0
  - jupyter_core=4.4.0=py_0
  - libiconv=1.14=vc14_4
  - libpng=1.6.28=vc14_2
  - libsodium=1.0.15=vc14_1
  - libtiff=4.0.7=vc14_1
  - libxml2=2.9.5=vc14_1
  - matplotlib=2.1.1=py35_0
  - mayavi=4.5.0=np111py35_vc14_1
  - networkx=1.11=py35_0
  - nlopt=2.4.2=py35_vc14_2
  - olefile=0.44=py35_0
  - openssl=1.0.2l=vc14_0
  - pagmo=2.4=vc14_1
  - pickleshare=0.7.4=py35_0
  - pillow=4.3.0=py35_1
  - prompt_toolkit=1.0.15=py35_0
  - pygments=2.2.0=py35_0
  - pygmo=2.4=np111py35_0
  - pyparsing=2.2.0=py35_0
  - pyqt=5.6.0=py35_4
  - python=3.5.4=0
  - python-dateutil=2.6.1=py35_0
  - pytz=2017.3=py_2
  - pywavelets=0.5.2=py35_1
  - pyzmq=16.0.2=py35_3
  - qt=5.6.2=vc14_1
  - scikit-image=0.13.0=py35_3
  - setuptools=36.6.0=py35_1
  - simplegeneric=0.8.1=py35_0
  - sip=4.18=py35_1
  - six=1.11.0=py35_1
  - sqlite=3.20.1=vc14_2
  - tbb=2018_20170919=vc14_0
  - tk=8.5.19=vc14_1
  - toolz=0.8.2=py_2
  - tornado=4.5.2=py35_0
  - traitlets=4.3.2=py35_0
  - traits=4.6.0=py35_1
  - vc=14=0
  - vs2015_runtime=14.0.25420=0
  - vtk=7.1.0=py35_vc14_4
  - wcwidth=0.1.7=py35_0
  - wheel=0.30.0=py35_2
  - win_unicode_console=0.5=py35_0
  - wincertstore=0.2=py35_0
  - yaml=0.1.7=vc14_0
  - zeromq=4.2.3=vc14_2
  - zlib=1.2.11=vc14_0
  - configobj=5.0.6=py35_0
  - icc_rt=2017.0.4=h97af966_0
  - intel-openmp=2018.0.0=hcd89f80_7
  - mkl=2018.0.0=h36b65af_4
  - numpy=1.11.3=py35h4fc39be_3
  - pip=9.0.1=py35_0
  - scikit-learn=0.19.1=py35h2037775_0
  - scipy=1.0.0=py35h75710e8_0
  - apptools=4.4.0=py35_0
  - boost=1.63.0=py35_vc14_2
  - envisage=4.5.1=py35_0
  - opencv3=3.1.0=py35_0
  - pyface=5.1.0=py35_0
  - traitsui=5.1.0=py35_0
  - pip:
    - absl-py==0.1.7
    - backports.functools-lru-cache==1.4
    - bleach==1.5.0
    - colour-demosaicing==0.1.2
    - colour-science==0.3.10
    - dask==0.16.0
    - entrypoints==0.2.3
    - exifread==2.1.2
    - gast==0.2.0
    - html5lib==0.9999999
    - ipython-genutils==0.2.0
    - ipywidgets==7.1.1
    - jinja2==2.10
    - jsonschema==2.6.0
    - jupyter==1.0.0
    - jupyter-client==5.2.2
    - jupyter-console==5.2.0
    - jupyter-core==4.4.0
    - markdown==2.6.10
    - markupsafe==1.0
    - mistune==0.8.3
    - nbconvert==5.3.1
    - nbformat==4.4.0
    - nose==1.3.7
    - notebook==5.4.0
    - pandocfilters==1.4.2
    - prompt-toolkit==1.0.15
    - protobuf==3.5.1
    - pywinpty==0.5.1
    - qtconsole==4.3.1
    - rawpy==0.10.1
    - send2trash==1.4.2
    - tb-nightly==1.5.0a20180102
    - terminado==0.8.1
    - testpath==0.3.1
    - tf-nightly==1.5.0.dev20180102
    - werkzeug==0.14.1
    - widgetsnbextension==3.1.3
    - win-unicode-console==0.5
  prefix: G:\ProgramData\Anaconda3_501\envs\auto-tune
  </code></pre>
  
  <p><strong>Update I tried conda install matplotlib=2.1.1</strong></p>
  
  <pre><code>G:\Git\advsol\projects\autotune&gt;conda install matplotlib=2.1.1
  Fetching package metadata .............
  Solving package specifications: .
  
  Package plan for installation in environment C:\ProgramData\Anaconda3:
  
  The following NEW packages will be INSTALLED:
  
      blas:                   1.0-mkl
      conda-package-handling: 1.3.11-py36_0
      libarchive:             3.3.3-h798a506_1
      lz4-c:                  1.8.1.2-h2fa13f4_0
      python-libarchive-c:    2.8-py36_11
      tqdm:                   4.32.1-py_0
      xz:                     5.2.4-h2fa13f4_4
      zstd:                   1.3.3-hfe6a214_0
  
  The following packages will be UPDATED:
  
      conda:                  4.3.30-py36h7e176b0_0 --&gt; 4.7.10-py36_0
      conda-env:              2.6.0-h36134e3_1      --&gt; 2.6.0-1
      libxml2:                2.9.4-vc14h8fd0f11_5  --&gt; 2.9.8-hadb2253_1
      matplotlib:             2.1.0-py36h11b4b9c_0  --&gt; 2.1.1-py36h2062329_0
      menuinst:               1.4.10-py36h42196fb_0 --&gt; 1.4.14-py36hfa6e2cd_0
      openssl:                1.0.2l-vc14hcac20b0_2 --&gt; 1.0.2p-hfa6e2cd_0
      pycosat:                0.6.2-py36hf17546d_1  --&gt; 0.6.3-py36hfa6e2cd_0
  
  Proceed ([y]/n)? y
  
  menuinst-1.4.1 100% |###############################| Time: 0:00:00  11.74 MB/s
  blas-1.0-mkl.t 100% |###############################| Time: 0:00:00   1.55 MB/s
  conda-env-2.6. 100% |###############################| Time: 0:00:00 938.32 kB/s
  lz4-c-1.8.1.2- 100% |###############################| Time: 0:00:00  18.51 MB/s
  openssl-1.0.2p 100% |###############################| Time: 0:00:00  34.74 MB/s
  xz-5.2.4-h2fa1 100% |###############################| Time: 0:00:00  16.77 MB/s
  libxml2-2.9.8- 100% |###############################| Time: 0:00:00  28.75 MB/s
  pycosat-0.6.3- 100% |###############################| Time: 0:00:00  16.66 MB/s
  tqdm-4.32.1-py 100% |###############################| Time: 0:00:00  11.74 MB/s
  zstd-1.3.3-hfe 100% |###############################| Time: 0:00:00  20.92 MB/s
  libarchive-3.3 100% |###############################| Time: 0:00:00  22.73 MB/s
  python-libarch 100% |###############################| Time: 0:00:00   7.77 MB/s
  conda-package- 100% |###############################| Time: 0:00:00  28.76 MB/s
  matplotlib-2.1 100% |###############################| Time: 0:00:00  29.00 MB/s
  conda-4.7.10-p 100% |###############################| Time: 0:00:00  27.90 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\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:\ProgramData\Anaconda3\Scripts\conda.exe
  Running `conda clean --packages` may resolve your problem.
  </code></pre>