Hi all,

Upon experimenting with Joe’s python3 version of kwant on OS X I found that mumps has a well maintained homebrew formula of its own in the homebrew/science tap: https://github.com/Homebrew/homebrew-science/blob/master/mumps.rb

I think it might be useful to simplify the kwant installation on OS X.

Also the tinyarray and kwant version are outdated on https://github.com/michaelwimmer/homebrew-kwant

Updating tinyarray via pip doesn’t work:

bnijholt:~> pip install tinyarray -U

Collecting tinyarray

Installing collected packages: tinyarray

Found existing installation: tinyarray 1.0.2

DEPRECATION: Uninstalling a distutils installed project (tinyarray) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.

Uninstalling tinyarray-1.0.2:

Successfully uninstalled tinyarray-1.0.2

Rolling back uninstall of tinyarray

Exception:

Traceback (most recent call last):

File "/usr/local/lib/python2.7/site-packages/pip/basecommand.py", line 223, in main

status = self.run(options, args)

File "/usr/local/lib/python2.7/site-packages/pip/commands/install.py", line 299, in run

root=options.root_path,

File "/usr/local/lib/python2.7/site-packages/pip/req/req_set.py", line 646, in install

**kwargs

File "/usr/local/lib/python2.7/site-packages/pip/req/req_install.py", line 813, in install

self.move_wheel_files(self.source_dir, root=root)

File "/usr/local/lib/python2.7/site-packages/pip/req/req_install.py", line 1008, in move_wheel_files

isolated=self.isolated,

File "/usr/local/lib/python2.7/site-packages/pip/wheel.py", line 339, in move_wheel_files

clobber(source, lib_dir, True)

File "/usr/local/lib/python2.7/site-packages/pip/wheel.py", line 317, in clobber

shutil.copyfile(srcfile, destfile)

File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 83, in copyfile

with open(dst, 'wb') as fdst:

IOError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/site-packages/tinyarray.so'

Changing the kwant tarball to the 1.0.4 file on the brew formula also doesn’t work (https://github.com/basnijholt/homebrew-kwant/blob/master/kwant.rb):

bnijholt:~> brew install kwant

==> Installing kwant from basnijholt/homebrew-kwant

==> Using Homebrew-provided fortran compiler.

This may be changed by setting the FC environment variable.

==> Building with an alternative Fortran compiler

This is unsupported.

Warning: No Fortran optimization information was provided. You may want to consider

setting FCFLAGS and FFLAGS or pass the `--default-fortran-flags` option to

`brew install` if your compiler is compatible with GCC.

If you like the default optimization level of your compiler, ignore this

warning.

==> Downloading pypi.python.org/packages/source/k/kwant/kwant-1.0.4.tar.gz

Already downloaded: /Library/Caches/Homebrew/kwant-1.0.4.tar.gz

==> Patching

patching file build.conf

==> python setup.py install --prefix=/usr/local/Cellar/kwant/1.0.4

Build configuration was:

User-configured LAPACK and BLAS

User-configured MUMPS

**********************************************************************

error: command 'clang' failed with exit status 1

READ THIS: https://git.io/brew-troubleshooting

If reporting this issue please do so at (not Homebrew/homebrew):

https://github.com/basnijholt/homebrew-kwant/issues

Best Bas