Update .appveyor.yml

Author: martin-frbg

.appveyor.yml

@@ -19,15 +19,15 @@ environment:
     CONDA_INSTALL_LOCN: C:\\Miniconda36-x64
 
 install:
-  - conda update --yes conda
+  - call %CONDA_INSTALL_LOCN%\conda update --yes conda
   - call %CONDA_INSTALL_LOCN%\Scripts\activate.bat
 #  - conda config --set auto_update_conda false
 #  - conda install --yes conda=4.3.8 --force
 #  - conda install --yes -c conda-forge charset-normalizer=2.0.5 --force  
 #  - conda update --yes -n base conda
 #  - conda config --add channels conda-forge --force
 #  - conda clean --all --yes
-  - %CONDA_INSTALL_LOCN%\conda install -c conda-forge --yes --quiet flang
+  - conda install -c conda-forge --yes --quiet flang
   - call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
   - set "LIB=%CONDA_INSTALL_LOCN%\Library\lib;%LIB%"
   - set "CPATH=%CONDA_INSTALL_LOCN%\Library\include;%CPATH%"