[Nix-dev] Python & installation &

[Marc Weber]

Those are my results

- python27.buildEnv worked

- nixos wiki: still contained the myEnv solution on the python page. I
  guess that should be replaced by buildEnv for "my use case".


  I tried fixing the article but can no longer login.
  Trying to reset password yields "Error sending mail: Unknown error in PHP's mail() function."


manual:

SOLUTION 1:
https://github.com/proger/python2nix
  pip installed, PYTHONPATH set, error failed to load / import "log".
  => README should be updated about how to install it?


SOLUTION 2:
https://github.com/garbas/pypi2nix
  => fails on matplotlib (png dependencies or such), thus some
  additional hint in the README about how to provide them would be nice.
  I can guess, but I don't like guessing.

  Then it looks very promising.



SOLUTION 3:
offlinehacker-pypi2nix/pypi2nix

%pypi2nix requirements.json out

  these derivations will be built:
    /nix/store/5lbb4vnbyxp9f9wcx1ifq910c8xklb8c-pypi2nix-requests-py27.drv
  building path(s) ‘/nix/store/f0zakhamn9c0pyqnp7mvwl81bw0hhip1-pypi2nix-requests-py27’
  --2016-04-23 10:08:45--  https://raw.github.com/buildout/buildout/master/bootstrap/bootstrap.py
  Resolving raw.github.com (raw.github.com)... 185.31.17.133
  Connecting to raw.github.com (raw.github.com)|185.31.17.133|:443... connected.
  ERROR: cannot verify raw.github.com's certificate, issued by 'CN=DigiCert SHA2 High Assurance Server CA,OU=www.digicert.com,O=DigiCert Inc,C=US':
    Unable to locally verify the issuer's authority.
  To connect to raw.github.com insecurely, use `--no-check-certificate'.
  builder for ‘/nix/store/5lbb4vnbyxp9f9wcx1ifq910c8xklb8c-pypi2nix-requests-py27.drv’ failed with exit code 5
  error: build of ‘/nix/store/5lbb4vnbyxp9f9wcx1ifq910c8xklb8c-pypi2nix-requests-py27.drv’ failed
  Traceback (most recent call last):
    File "/nix/store/pw96jxliw0f1nsr91jl71c0mmk5j98gk-python2.7-pypi2nix-1.0_04a68d8577acbceb88bdf51b1231a9dbdead7003/bin/.pypi2nix-wrapped", line 12, in <module>
      sys.exit(main())
    File "/nix/store/pw96jxliw0f1nsr91jl71c0mmk5j98gk-python2.7-pypi2nix-1.0_04a68d8577acbceb88bdf51b1231a9dbdead7003/lib/python2.7/site-packages/pypi2nix/cli.py", line 143, in main
      tmp = run_buildout(eggsdir, config)
    File "/nix/store/pw96jxliw0f1nsr91jl71c0mmk5j98gk-python2.7-pypi2nix-1.0_04a68d8577acbceb88bdf51b1231a9dbdead7003/lib/python2.7/site-packages/pypi2nix/buildout.py", line 248, in run_buildout
      return buildout.run(eggsdir)
    File "/nix/store/pw96jxliw0f1nsr91jl71c0mmk5j98gk-python2.7-pypi2nix-1.0_04a68d8577acbceb88bdf51b1231a9dbdead7003/lib/python2.7/site-packages/pypi2nix/buildout.py", line 104, in run
      cwd=buildout_dir, shell=True
    File "/home/anton_lvov/.nix-profile/lib/python2.7/subprocess.py", line 573, in check_output
      raise CalledProcessError(retcode, cmd, output=output)
  subprocess.CalledProcessError: Command '['/run/current-system/sw/bin/nix-build']' returned non-zero exit status 100

%cat requirements.json
  [
  "requests",
  "unidecode",
  "pysqlite",
  "pandas",
  "matplotlib",
  "scipy",
  "scrapy",
  "mpl_toolkits",
  "statsmodels",
  "BeautifulSoup4"
  ]

Marc Weber