cmake not found

Traceback (most recent call last):
  File "setup.py", line 55, in <module>
    boost_modules = ['system', 'iostreams', 'filesystem'],
  File "/local/builds/bob/bob.core/miniconda/conda-bld/bob.core_1516127586861/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehol/lib/python2.7/site-packages/bob/blitz/extension.py", line 92, in __init__
    BobLibrary.__init__(self, *args, **kwargs)
  File "/local/builds/bob/bob.core/miniconda/conda-bld/bob.core_1516127586861/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehol/lib/python2.7/site-packages/bob/extension/__init__.py", line 557, in __init__
    raise OSError("The Library class needs CMake version >= 2.8 to be installed, but CMake cannot be found")
OSError: The Library class needs CMake version >= 2.8 to be installed, but CMake cannot be found
source tree in: /local/builds/bob/bob.core/miniconda/conda-bld/bob.core_1516127586861/work
Traceback (most recent call last):
  File "/local/builds/bob/bob.core/miniconda/bin/conda-build", line 11, in <module>
    sys.exit(main())
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/site-packages/conda_build/cli/main_build.py", line 399, in main
    execute(sys.argv[1:])
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/site-packages/conda_build/cli/main_build.py", line 390, in execute
    verify=args.verify)
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/site-packages/conda_build/api.py", line 188, in build
    need_source_download=need_source_download, config=config, variants=variants)
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/site-packages/conda_build/build.py", line 1916, in build_tree
    notest=notest,
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/site-packages/conda_build/build.py", line 1218, in build
    utils.check_call_env(cmd, env=env, cwd=src_dir)
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/site-packages/conda_build/utils.py", line 677, in check_call_env
    return _func_defaulting_env_to_os_environ(subprocess.check_call, *popenargs, **kwargs)
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/site-packages/conda_build/utils.py", line 673, in _func_defaulting_env_to_os_environ
    return func(_args, **kwargs)
  File "/local/builds/bob/bob.core/miniconda/lib/python3.6/subprocess.py", line 291, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/bin/bash', '-e', '/local/builds/bob/bob.core/miniconda/conda-bld/bob.core_1516127586861/work/conda_build.sh']' returned non-zero exit status 1.

See: https://gitlab.idiap.ch/bob/bob.core/-/jobs/115968