PyROOT cannot open file: "Error in <TNetXNGFile::Open>: [FATAL] Auth failed"

@ksmith @amadio Yes, sorry, what I get for working exhausted.
@amadio I’m using ROOT from the build directory:

$ which root
/Applications/root_build/bin/root

But I’m afraid making doesn’t solve the problem. If I cmake against python2 (which I think is the homebrew version):

$ cd /Applications/root_build/
$ cmake ../root -DPYTHON_EXECUTABLE=/usr/local/bin/python2
-- Found a Mac OS X System 10.13
-- Found a 64bit system
-- Found LLVM compiler collection
-- ROOT Platform: macosx
-- ROOT Architecture: macosx64
-- Build Type: RelWithDebInfo
-- Compiler Flags:  -Wc++11-narrowing -Wsign-compare -Wsometimes-uninitialized -Wconditional-uninitialized -Wheader-guard -Warray-bounds -Wcomment -Wtautological-compare -Wstrncat-size -Wloop-analysis -Wbool-conversion -m64 -pipe -W -Wshadow -Wall -Woverloaded-virtual -fsigned-char -fno-common -Qunused-arguments -pthread -std=c++11 -stdlib=libc++ -O2 -g -DNDEBUG
-- Looking for ZLib
-- Building freetype version 2.6.1 included in ROOT itself
-- Building pcre version 8.37 included in ROOT itself
-- Building LZMA version 5.2.1 included in ROOT itself
-- Building LZ4 version v1.7.5 included in ROOT itself
-- Could NOT find GIF (missing: GIF_LIBRARY GIF_INCLUDE_DIR) 
-- Could NOT find TIFF (missing: TIFF_LIBRARY TIFF_INCLUDE_DIR) 
-- Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR) 
-- Building AfterImage library included in ROOT itself
-- Looking for Python
-- Found PythonInterp: /usr/local/bin/python2 (found version "2.7.14") 
-- Found Python interpreter version 2.7
-- Looking for OpenGL
-- Looking for Bonjour
-- Checking whether Bonjour/Avahi is supported
-- Looking for Kerberos 5
-- Looking for LibXml2
-- Looking for SQLite
-- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE) 
-- Downloading and building XROOTD version 
-- Looking for BLAS for optional parts of TMVA
-- A library with BLAS API found.
-- Enabled support for:  asimage astiff bonjour builtin_afterimage builtin_freetype builtin_ftgl builtin_gl2ps builtin_glew builtin_llvm builtin_lzma builtin_lz4 builtin_pcre builtin_tbb builtin_unuran builtin_veccore builtin_xrootd cling cocoa cxx11 exceptions explicitlink fortran gdml genvector http imt krb5 ldap libcxx memstat minuit2 opengl pch python roofit shared sqlite table thread tmva unuran veccore xml xrootd
-- Found libtool - /Library/Developer/CommandLineTools/usr/bin/libtool
-- Native target architecture is X86
-- Threads disabled.
-- Doxygen disabled.
-- Go bindings disabled.
-- Found ld64 - /Library/Developer/CommandLineTools/usr/bin/ld
-- Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH) 
-- Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH) 
-- OCaml bindings disabled.
-- LLVM host triple: x86_64-apple-darwin17.0.0
-- LLVM default target triple: x86_64-apple-darwin17.0.0
-- Building with -fPIC
-- Constructing LLVMBuild project information
-- Targeting X86
-- Could NOT find Z3 (missing: Z3_LIBRARIES Z3_INCLUDE_DIR) (Required is at least version "4.5")
-- Clang version: 5.0.0
-- Cling version (from VERSION file): ROOT_0.5~dev
-- Cling will look for C++ headers in '/Library/Developer/CommandLineTools/usr/include/c++/v1' at runtime.
-- And if not found, will invoke: '/Library/Developer/CommandLineTools/usr/bin/c++ ' for them.
-- TMVA: Deactivate PyMVA because numpy is not found
-- Configuring done
-- Generating done
-- Build files have been written to: /Applications/root_build
$ make -j8
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Generating PCH for bindings/pyroot core/base core/clingutils core/imt core/multiproc core/rint core/thread graf2d/asimage graf2d/cocoa graf2d/gpad graf2d/graf graf2d/postscript graf2d/quartz graf3d/g3d graf3d/gl gui/fitpanel gui/gui hist/hist hist/histpainter hist/spectrum hist/spectrumpainter hist/unfold io/io math/genetic math/genvector math/mathcore math/matrix math/minuit math/minuit2 math/physics math/smatrix math/splot net/net net/netx net/netxng roofit/histfactory roofit/roofit roofit/roofitcore roofit/roostats tmva/pymva tmva/tmva tmva/tmvagui tree/tree tree/treeplayer tree/treeviewer

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$ root
   -----------------------------------------------------------------
  | Welcome to ROOT 6.11/03                     http://root.cern.ch |
  |                                    (c) 1995-2017, The ROOT Team |
  | Built for macosx64                                              |
  | From heads/master@v6-11-02-3-g9bb8349ee6, Oct 10 2017, 13:40:35 |
  | Try '.help', '.demo', '.license', '.credits', '.quit'/'.q'      |
   -----------------------------------------------------------------

root [0] .q

So far so good. I have to fix the relative rpaths again, as in my previous thread, and then:

$ python
Python 2.7.10 (default, Jul 15 2017, 17:16:57) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ROOT; f = ROOT.TFile.Open('root://eoslhcb.cern.ch/eos/lhcb/user/m/mwilkins/bfractions_fromGanga/MC/Up16/579.0/DVnTuples.root')
Error in <TNetXNGFile::Open>: [FATAL] Auth failed

System python gives me the same error as before. But python2:

$ python2
Python 2.7.14 (default, Sep 25 2017, 09:54:19) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.37)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ROOT; f = ROOT.TFile.Open('root://eoslhcb.cern.ch/eos/lhcb/user/m/mwilkins/bfractions_fromGanga/MC/Up16/579.0/DVnTuples.root')
Fatal Python error: PyThreadState_Get: no current thread
Abort trap: 6

doesn’t work at all. FYI:

$ which python
/usr/bin/python
$ which python2
/usr/local/bin/python2