For now, some CMake versions are tested.
I don't know why, but it seems some Python packages cannot be downloaded from Travis.
cmake3.14 create: /home/travis/build/iblancasa/cid/src/python/.tox/cmake3.14
cmake3.14 installdeps: scikit-build, pytest, cmake==3.14.4
ERROR: invocation failed (exit code 1), logfile: /home/travis/build/iblancasa/cid/src/python/.tox/cmake3.14/log/cmake3.14-1.log
================================== log start ===================================
Collecting scikit-build
Downloading https://files.pythonhosted.org/packages/8a/b5/c6ca60421991c22e69b9a950b0d046e06d714f79f7071946ab885c7115fb/scikit_build-0.10.0-py2.py3-none-any.whl (66kB)
Collecting pytest
Downloading https://files.pythonhosted.org/packages/19/cf/711f1d887cb92c5155c9a1eb338f1b5d2411b50e4492a3b20e4a188a22b2/pytest-5.3.2-py3-none-any.whl (234kB)
Collecting cmake==3.14.4
Could not find a version that satisfies the requirement cmake==3.14.4 (from versions: 0.1.0, 0.2.0, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.7.1, 0.8.0, 0.9.0, 3.6.3, 3.6.3.post1, 3.7.2, 3.8.2, 3.9.6, 3.10.3, 3.11.0, 3.11.4, 3.11.4.post1, 3.12.0, 3.13.0, 3.13.1, 3.13.2, 3.13.2.post1, 3.13.3)
No matching distribution found for cmake==3.14.4
=================================== log end ====================================
ERROR: could not install deps [scikit-build, pytest, cmake==3.14.4]; v = InvocationError('/home/travis/build/iblancasa/cid/src/python/.tox/cmake3.14/bin/python -m pip install scikit-build pytest cmake==3.14.4 --no-cache-dir', 1)
cmake3.15 create: /home/travis/build/iblancasa/cid/src/python/.tox/cmake3.15
cmake3.15 installdeps: scikit-build, pytest, cmake==3.15.3
ERROR: invocation failed (exit code 1), logfile: /home/travis/build/iblancasa/cid/src/python/.tox/cmake3.15/log/cmake3.15-1.log
================================== log start ===================================
Collecting scikit-build
Downloading https://files.pythonhosted.org/packages/8a/b5/c6ca60421991c22e69b9a950b0d046e06d714f79f7071946ab885c7115fb/scikit_build-0.10.0-py2.py3-none-any.whl (66kB)
Collecting pytest
Downloading https://files.pythonhosted.org/packages/19/cf/711f1d887cb92c5155c9a1eb338f1b5d2411b50e4492a3b20e4a188a22b2/pytest-5.3.2-py3-none-any.whl (234kB)
Collecting cmake==3.15.3
Could not find a version that satisfies the requirement cmake==3.15.3 (from versions: 0.1.0, 0.2.0, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.7.1, 0.8.0, 0.9.0, 3.6.3, 3.6.3.post1, 3.7.2, 3.8.2, 3.9.6, 3.10.3, 3.11.0, 3.11.4, 3.11.4.post1, 3.12.0, 3.13.0, 3.13.1, 3.13.2, 3.13.2.post1, 3.13.3)
No matching distribution found for cmake==3.15.3
=================================== log end ====================================
ERROR: could not install deps [scikit-build, pytest, cmake==3.15.3]; v = InvocationError('/home/travis/build/iblancasa/cid/src/python/.tox/cmake3.15/bin/python -m pip install scikit-build pytest cmake==3.15.3 --no-cache-dir', 1)
___________________________________ summary ____________________________________
py: commands succeeded
cmake3.8: commands succeeded
cmake3.9: commands succeeded
cmake3.10: commands succeeded
cmake3.11: commands succeeded
cmake3.12: commands succeeded
cmake3.13: commands succeeded
ERROR: cmake3.14: could not install deps [scikit-build, pytest, cmake==3.14.4]; v = InvocationError('/home/travis/build/iblancasa/cid/src/python/.tox/cmake3.14/bin/python -m pip install scikit-build pytest cmake==3.14.4 --no-cache-dir', 1)
ERROR: cmake3.15: could not install deps [scikit-build, pytest, cmake==3.15.3]; v = InvocationError('/home/travis/build/iblancasa/cid/src/python/.tox/cmake3.15/bin/python -m pip install scikit-build pytest cmake==3.15.3 --no-cache-dir', 1)
The command "tox" exited with 1.