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docs/source/installation.rst

+Installation
+============
+
+
+In the following, we assume a Debian-based distribution. For other
+distributions, the "apt" lines will need slight changes.
+
+NIFTy4 and its mandatory dependencies can be installed via::
+
+    sudo apt-get install git libfftw3-dev python python-pip python-dev
+    pip install --user git+https://gitlab.mpcdf.mpg.de/ift/NIFTy.git@NIFTy_4
+
+(Note: If you encounter problems related to `pyFFTW`, make sure that you are
+using a pip-installed `pyFFTW` package. Unfortunately, some distributions are
+shipping an incorrectly configured `pyFFTW` package, which does not cooperate
+with the installed `FFTW3` libraries.)
+
+Plotting support is added via::
+
+    pip install --user matplotlib
+
+Support for spherical harmonic transforms is added via:
+
+    pip install --user git+https://gitlab.mpcdf.mpg.de/ift/pyHealpix.git
+
+MPI support is added via::
+
+    sudo apt-get install openmpi-bin libopenmpi-dev
+    pip install --user mpi4py
+
+Scipy-based minimizers are enabled via::
+
+    pip install --user scipy
+
+Installation for Python 3
+-------------------------
+
+If you want to run NIFTy with Python 3, you need to make the following changes
+to the instructions above:
+
+- in all `apt-get` commands, replace `python-*` by `python3-*`
+- in all `pip` commands, replace `pip` by `pip3`
+