ciao!

sto cercando di installare la libreria dataset (https://dataset.readthedocs.io/en/latest/index.html), ma non riesco perchè ottengo questo errore:
codice:
# pip3 install dataset
Collecting dataset
  Using cached https://files.pythonhosted.org/packages/ba/76/5b8fe80f487bfa90b8d0094c3a27150fe797b1fbe02dec31b048fd52448d/dataset-1.1.0-py2.py3-none-any.whl
Collecting sqlalchemy>=1.1.0 (from dataset)
  Using cached https://files.pythonhosted.org/packages/0c/7d/769c5fc22c0cdefd097b91cc525b6d8c88bf2afd8b0315b1e7ca088956b4/SQLAlchemy-1.2.15.tar.gz
Collecting normality>=0.5.1 (from dataset)
  Using cached https://files.pythonhosted.org/packages/7f/38/9ed937afe0fe95a281180d8820d46eb955bc1b0f656f3b301635608a5c1f/normality-1.0.0-py2.py3-none-any.whl
Collecting six>=1.11.0 (from dataset)
  Using cached https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
Collecting alembic>=0.6.2 (from dataset)
  Using cached https://files.pythonhosted.org/packages/1c/65/b8e4f5b2f345bb13b5e0a3fddd892b0b3f0e8ad4880e954fdc6a50d00d84/alembic-1.0.5.tar.gz
Collecting pyicu>=1.9.3 (from normality>=0.5.1->dataset)
  Using cached https://files.pythonhosted.org/packages/c2/15/0af20b540c828943b6ffea5677c86e908dcac108813b522adebb75c827c1/PyICU-2.2.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "/tmp/pip-build-h33m0yky/pyicu/setup.py", line 43, in <module>
        ICU_VERSION = os.environ['ICU_VERSION']
      File "/usr/lib/python3.5/os.py", line 725, in __getitem__
        raise KeyError(key) from None
    KeyError: 'ICU_VERSION'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "/tmp/pip-build-h33m0yky/pyicu/setup.py", line 46, in <module>
        ICU_VERSION = check_output(('icu-config', '--version')).strip()
      File "/usr/lib/python3.5/subprocess.py", line 316, in check_output
        **kwargs).stdout
      File "/usr/lib/python3.5/subprocess.py", line 383, in run
        with Popen(*popenargs, **kwargs) as process:
      File "/usr/lib/python3.5/subprocess.py", line 676, in __init__
        restore_signals, start_new_session)
      File "/usr/lib/python3.5/subprocess.py", line 1282, in _execute_child
        raise child_exception_type(errno_num, err_msg)
    FileNotFoundError: [Errno 2] No such file or directory: 'icu-config'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-h33m0yky/pyicu/setup.py", line 53, in <module>
        ''')
    RuntimeError:
    Please set the ICU_VERSION environment variable to the version of
    ICU you have installed.
    
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-h33m0yky/pyicu/
ho, quindi, provato ad installare PyICU, ottenendo un altro errore:
codice:
# pip3 install PyICU
Collecting PyICU
  Using cached https://files.pythonhosted.org/packages/c2/15/0af20b540c828943b6ffea5677c86e908dcac108813b522adebb75c827c1/PyICU-2.2.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "/tmp/pip-build-1bzg0qhr/PyICU/setup.py", line 43, in <module>
        ICU_VERSION = os.environ['ICU_VERSION']
      File "/usr/lib/python3.5/os.py", line 725, in __getitem__
        raise KeyError(key) from None
    KeyError: 'ICU_VERSION'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "/tmp/pip-build-1bzg0qhr/PyICU/setup.py", line 46, in <module>
        ICU_VERSION = check_output(('icu-config', '--version')).strip()
      File "/usr/lib/python3.5/subprocess.py", line 316, in check_output
        **kwargs).stdout
      File "/usr/lib/python3.5/subprocess.py", line 383, in run
        with Popen(*popenargs, **kwargs) as process:
      File "/usr/lib/python3.5/subprocess.py", line 676, in __init__
        restore_signals, start_new_session)
      File "/usr/lib/python3.5/subprocess.py", line 1282, in _execute_child
        raise child_exception_type(errno_num, err_msg)
    FileNotFoundError: [Errno 2] No such file or directory: 'icu-config'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-1bzg0qhr/PyICU/setup.py", line 53, in <module>
        ''')
    RuntimeError:
    Please set the ICU_VERSION environment variable to the version of
    ICU you have installed.
    
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-1bzg0qhr/PyICU/
qualche idea??