My procedure for (Ana/Mini)conda users for installing new packages.

install_new_package.sh

# set package_name, replace SpiceyPy with what you need.
PACKAGE_NAME = SpiceyPy
# First make sure you have activated the conda env where you want `package_name` installed
source activate myenv
# Then update pip to newest versions, as they are usually better in handling uninstalls:
conda update pip
# Now check if `package_name` is in conda:
conda install $PACKAGE_NAME
# if not, check if it's on pypi:
pip install $PACKAGE_NAME
# if still not found, resort to GitHub installs.
# find repository needed and copy the install link as offered by GitHub
# (use the https version of the link if you haven't set up ssh access to GitHub yet
# I'm using AndrewAnnex awesome interface to NASA's solar system geometry tools SPICE
# as an example. Make sure you are in a folder where you store your codes.
git clone git@github.com:AndrewAnnex/SpiceyPy.git
# go into the new folder:
cd SpiceyPy
# if you know about a certain branch you have been recommended to install, check it out:
git checkout branch_name
# now install it, usually that's just this, but check INSTALL.txt or similar:
python setup.py install
# In case you are developing, fixing something and want your changes be active immediately
# in your Python environment, replace the previous line with:
python setup.py develop

# That should you guys get going for a while. I'm using this procedure successfully for over a year
# now with Miniconda and had only few problems. (There's always SOMETHING with Python packaging...)