MAINT upgrade conda installation for circle-ci

Author: mfeurer

ci_scripts/circle_install.sh

@@ -6,6 +6,7 @@
 # here.
 source activate testenv
 
+export CC=`which gcc`
 # install documentation building dependencies
 pip install --upgrade numpy
 pip install --upgrade matplotlib setuptools nose coverage sphinx==1.5.5 sphinx_bootstrap_theme numpydoc
@@ -16,4 +17,4 @@ python setup.py clean
 python setup.py develop
 
 # pipefail is necessary to propagate exit codes
-set -o pipefail && cd doc && make html 2>&1 | tee ~/log.txt
+set -o pipefail && cd doc && make html 2>&1 | tee ~/log.txt

circle.yml

@@ -26,10 +26,11 @@ dependencies:
     - sudo -E apt-get -yq remove texlive-binaries --purge
     - sudo -E apt-get -yq update
     - sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install dvipng texlive-latex-base texlive-latex-extra
+    # Other stuff...
+    - sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install build-essential
     # Conda installation
     - wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O ~/miniconda.sh
     - bash ~/miniconda.sh -b -p $HOME/miniconda
-    - conda update --yes conda
     - conda create -n testenv --yes python=3.6 pip wheel nose gcc swig
 
   # The --user is needed to let sphinx see the source and the binaries