Numpy is required to build Mayavi correctly, please install it first

[loeiten]

As with #657, I'm trying to add Mayavi to a package. However, when pip installing my package I get a different error when wheel is being built for collected packages

Numpy is required to build Mayavi correctly, please install it first.

I have numpy as a dependency as shown in the trace below.
What confuses me is that it appears that the build completes successfully.

Collecting boututils
  Downloading https://files.pythonhosted.org/packages/7e/6c/9b25180e450df06dc62c6898208cd0d2c564821174da262df6d079e6243c/boututils-0.1.2-py3-none-any.whl (68kB)
Collecting netCDF4 (from boututils)
  Downloading https://files.pythonhosted.org/packages/48/94/eacbf790ceb237bee5db9c54e7c225ff0898d6dd496166a21d7c57254eb5/netCDF4-1.5.1.2-cp36-cp36m-manylinux1_x86_64.whl (4.1MB)
Collecting numpy (from boututils)
  Downloading https://files.pythonhosted.org/packages/c1/e2/4db8df8f6cddc98e7d7c537245ef2f4e41a1ed17bf0c3177ab3cc6beac7f/numpy-1.16.3-cp36-cp36m-manylinux1_x86_64.whl (17.3MB)
Collecting scipy (from boututils)
  Downloading https://files.pythonhosted.org/packages/72/4c/5f81e7264b0a7a8bd570810f48cd346ba36faedbd2ba255c873ad556de76/scipy-1.3.0-cp36-cp36m-manylinux1_x86_64.whl (25.2MB)
Collecting future (from boututils)
  Downloading https://files.pythonhosted.org/packages/90/52/e20466b85000a181e1e144fd8305caf2cf475e2f9674e797b222f8105f5f/future-0.17.1.tar.gz (829kB)
Collecting matplotlib (from boututils)
  Downloading https://files.pythonhosted.org/packages/da/83/d989ee20c78117c737ab40e0318ea221f1aed4e3f5a40b4f93541b369b93/matplotlib-3.1.0-cp36-cp36m-manylinux1_x86_64.whl (13.1MB)
Collecting h5py (from boututils)
  Downloading https://files.pythonhosted.org/packages/30/99/d7d4fbf2d02bb30fb76179911a250074b55b852d34e98dd452a9f394ac06/h5py-2.9.0-cp36-cp36m-manylinux1_x86_64.whl (2.8MB)
Collecting bunch (from boututils)
  Downloading https://files.pythonhosted.org/packages/ef/bf/a4cf1779a4ffb4f610903fa08e15d1f4a8a2f4e3353a02afbe097c5bf4a8/bunch-1.0.1.tar.gz
Collecting PyQt5 (from boututils)
  Downloading https://files.pythonhosted.org/packages/6a/f4/6a63aafcee3efd2b156dc835d9c85ca99b24e80f8af89b6da5c46054fe43/PyQt5-5.12.2-5.12.3-cp35.cp36.cp37.cp38-abi3-manylinux1_x86_64.whl (61.5MB)
Collecting mayavi (from boututils)
  Downloading https://files.pythonhosted.org/packages/83/9e/293ba57353ed258c2f64d54bf00ca1447c1f38f4eb60d0e762ddec57bf51/mayavi-4.6.2.tar.bz2 (7.0MB)
Collecting cftime (from netCDF4->boututils)
  Downloading https://files.pythonhosted.org/packages/70/64/8ceadda42af3c1b27ee77005807e38c6d77baef28a8f9216b60577fddd71/cftime-1.0.3.4-cp36-cp36m-manylinux1_x86_64.whl (305kB)
Collecting kiwisolver>=1.0.1 (from matplotlib->boututils)
  Downloading https://files.pythonhosted.org/packages/f8/a1/5742b56282449b1c0968197f63eae486eca2c35dcd334bab75ad524e0de1/kiwisolver-1.1.0-cp36-cp36m-manylinux1_x86_64.whl (90kB)
Collecting cycler>=0.10 (from matplotlib->boututils)
  Downloading https://files.pythonhosted.org/packages/f7/d2/e07d3ebb2bd7af696440ce7e754c59dd546ffe1bbe732c8ab68b9c834e61/cycler-0.10.0-py2.py3-none-any.whl
Collecting python-dateutil>=2.1 (from matplotlib->boututils)
  Downloading https://files.pythonhosted.org/packages/41/17/c62faccbfbd163c7f57f3844689e3a78bae1f403648a6afb1d0866d87fbb/python_dateutil-2.8.0-py2.py3-none-any.whl (226kB)
Collecting pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 (from matplotlib->boututils)
  Downloading https://files.pythonhosted.org/packages/dd/d9/3ec19e966301a6e25769976999bd7bbe552016f0d32b577dc9d63d2e0c49/pyparsing-2.4.0-py2.py3-none-any.whl (62kB)
Requirement already satisfied: six in /usr/lib/python3/dist-packages (from h5py->boututils)
Collecting PyQt5_sip<13,>=4.19.14 (from PyQt5->boututils)
  Downloading https://files.pythonhosted.org/packages/4a/e2/0a2ab857a85e6c09ddd4ebc0bf03274557899d79e678bc78908b3856511b/PyQt5_sip-4.19.17-cp36-cp36m-manylinux1_x86_64.whl (67kB)
Collecting apptools (from mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/78/84/64764e2c87fcb7ad7521bdabc7c44c109b80691f94218cbddd5df2ee682c/apptools-4.4.0.tar.bz2 (241kB)
Collecting envisage (from mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/24/25/63a50574fd9af66345ee6dc0d4bac342e755f9ac868927ca0beae178725a/envisage-4.7.2.tar.gz (256kB)
Collecting pyface>=6.0.0 (from mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/d2/ff/9e54cbd6748c3421d9afa82b2e119eef1d47f3ba33bb0b790bcba9a134ca/pyface-6.1.0.tar.gz (5.3MB)
Collecting pygments (from mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/6e/00/c5cb5fc7c047da4af049005d0146b3a961b1a25d9cefbbe24bf0882a11ad/Pygments-2.4.0-py2.py3-none-any.whl (882kB)
Collecting traits>=4.6.0 (from mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/81/80/2b5bb0036bbd05b971546b0d3a942b97896122681d4c657edb12d299d891/traits-5.1.1.tar.gz (436kB)
Collecting traitsui>=6.0.0 (from mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/b3/23/4a8560fd1b445e65b440ffa668cf7264764387ad0a4dda58add0d5bbfc7d/traitsui-6.1.0.tar.gz (5.1MB)
Collecting vtk (from mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/22/f5/30e11e1ad21701e1cd185b046979107930419a74a5602c6b899dc8523fe4/vtk-8.1.2-cp36-cp36m-manylinux1_x86_64.whl (48.9MB)
Requirement already satisfied: setuptools in /usr/lib/python3/dist-packages (from kiwisolver>=1.0.1->matplotlib->boututils)
Collecting configobj (from apptools->mayavi->boututils)
  Downloading https://files.pythonhosted.org/packages/64/61/079eb60459c44929e684fa7d9e2fdca403f67d64dd9dbac27296be2e0fab/configobj-5.0.6.tar.gz
Building wheels for collected packages: future, bunch, mayavi, apptools, envisage, pyface, traits, traitsui, configobj
  Running setup.py bdist_wheel for future: started
  Running setup.py bdist_wheel for future: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/0c/61/d2/d6b7317325828fbb39ee6ad559dbe4664d0896da4721bf379e
  Running setup.py bdist_wheel for bunch: started
  Running setup.py bdist_wheel for bunch: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/56/0f/19/fbbf81e5764e6d8b74501c4357a88c14c94466ec777c03734c
  Running setup.py bdist_wheel for mayavi: started
  Running setup.py bdist_wheel for mayavi: finished with status 'error'
  Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-da6mxv1x/mayavi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmp3j11y8nxpip-wheel- --python-tag cp36:
  ********************************************************************************

      Numpy is required to build Mayavi correctly, please install it first.

  ********************************************************************************
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "/tmp/pip-build-da6mxv1x/mayavi/setup.py", line 401, in <module>
      raise RuntimeError(msg)
  RuntimeError:
      Numpy is required to build Mayavi correctly, please install it first.


  ----------------------------------------
  Failed building wheel for mayavi
  Running setup.py clean for mayavi
  Running setup.py bdist_wheel for apptools: started
  Running setup.py bdist_wheel for apptools: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/f9/9e/2a/981bab2267d8f7fa546568cd79440e6b61b4fc570ee071080e
  Running setup.py bdist_wheel for envisage: started
  Running setup.py bdist_wheel for envisage: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/c6/4e/b1/7fdc3b4f5d86e82f74e962ec368bd024d91105aee07b2e5c90
  Running setup.py bdist_wheel for pyface: started
  Running setup.py bdist_wheel for pyface: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/31/07/f9/08382ddf9705b65fb4c1d457dcd3f1df3ed25fb426fce6727d
  Running setup.py bdist_wheel for traits: started
  Running setup.py bdist_wheel for traits: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/c6/77/33/5d96f09820a86a1412633269f80ca747bdf33e6e168f988e16
  Running setup.py bdist_wheel for traitsui: started
  Running setup.py bdist_wheel for traitsui: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/c1/d1/f8/ce35ed6ab6636cca12dd26dbe4622b285a5062f8602b580c6e
  Running setup.py bdist_wheel for configobj: started
  Running setup.py bdist_wheel for configobj: finished with status 'done'
  Stored in directory: /root/.cache/pip/wheels/f1/e4/16/4981ca97c2d65106b49861e0b35e2660695be7219a2d351ee0
Successfully built future bunch apptools envisage pyface traits traitsui configobj
Failed to build mayavi
Installing collected packages: numpy, cftime, netCDF4, scipy, future, kiwisolver, cycler, python-dateutil, pyparsing, matplotlib, h5py, bunch, PyQt5-sip, PyQt5, configobj, traits, pyface, traitsui, apptools, envisage, pygments, vtk, mayavi, boututils
  Running setup.py install for mayavi: started
    Running setup.py install for mayavi: finished with status 'done'

[prabhuramachandran]

Basically, it tries to install mayavi fails, then gets numpy and then succeeds building mayavi, so that seems like a red-herring. Does Mayavi work after this?

[loeiten]

For my purposes it seems to work. However, due to display issues (I'm testing through a container) I cannot fully test whether it works or not. Running

from xvfbwrapper import Xvfb
vdisplay = Xvfb(width=1920, height=1080)
vdisplay.start()

from mayavi import mlab
mlab.options.offscreen = True
s = mlab.test_plot3d()

Gives the error

/usr/local/lib/python3.6/dist-packages/traits/etsconfig/etsconfig.py:420: UserWarning: Environment variable "HOME" not set, setting home directory to /tmp
  % (environment_variable, parent_directory)
ERROR: In /work/standalone-x64-build/VTK-source/Rendering/OpenGL2/vtkXOpenGLRenderWindow.cxx, line 445
vtkXOpenGLRenderWindow (0x2a3db40): bad X server connection. DISPLAY=:961343446. Aborting.

If you have another way of testing if it works, I'll gladly help :)