simplify travis and conda installation

Author: mtezzele

.travis.yml

@@ -30,20 +30,12 @@ before_script:
 before_install:
     # We do this conditionally because it saves us some downloading if the
     # version is the same.
-    - if [[ "$TRAVIS_PYTHON_VERSION" == "2.7" ]]; then
+    - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
         wget https://repo.continuum.io/miniconda/Miniconda2-latest-Linux-x86_64.sh -O miniconda.sh;
-      fi
-    - if [[ "$TRAVIS_PYTHON_VERSION" == "3.6" ]]; then
-        wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
-      fi
-    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
+      else
         brew update;
         brew install python;
-        if [[ "$TOXENV" == "py27" ]]; then
-            wget https://repo.continuum.io/miniconda/Miniconda2-latest-MacOSX-x86_64.sh -O miniconda.sh;
-        else
-            wget https://repo.continuum.io/miniconda/Miniconda3-latest-MacOSX-x86_64.sh -O miniconda.sh;
-        fi
+        wget https://repo.continuum.io/miniconda/Miniconda2-latest-MacOSX-x86_64.sh -O miniconda.sh;
       fi
     - chmod +x miniconda.sh
     - bash miniconda.sh -b -p $HOME/miniconda
@@ -69,14 +61,12 @@ install:
     - echo $LD_LIBRARY_PATH
     - echo $DYLD_LIBRARY_PATH
     - echo $PATH
-    - pip install numpy scipy matplotlib vtk nose
+    - conda install numpy scipy matplotlib vtk nose setuptools coveralls
     - if [[ "$TOXENV" == "py27" ]]; then
         conda install --yes -c conda-forge -c dlr-sc -c pythonocc -c oce pythonocc-core=0.17 python=2.7;
       else
         conda install --yes -c conda-forge -c dlr-sc -c pythonocc -c oce pythonocc-core=0.17 python=3.6;
       fi
-    - pip install setuptools
-    - pip install coveralls
     - python setup.py install
 
 script: