Cannot build espruino: Linux

I'm sure it's me, but I get the following error :

jv@Emp:~/Espruino$ source scripts/provision.sh PUCKJS
Provision BOARDNAME = PUCKJS
Provision FAMILY = NRF52
===== NRF52
Installing nrfutil
Downloading/unpacking nrfutil
  Downloading nrfutil-6.1.2.tar.gz (844kB): 844kB downloaded
  Running setup.py (path:/tmp/pip-build-X12V_8/nrfutil/setu­p.py) egg_info for package nrfutil
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'zipfile'
      warnings.warn(msg)
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'python_requires'
      warnings.warn(msg)
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'console'
      warnings.warn(msg)
    error in nrfutil setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers
    Complete output from command python setup.py egg_info:
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'zipfile'

  warnings.warn(msg)

/usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'python_requires'

  warnings.warn(msg)

/usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'console'

  warnings.warn(msg)

error in nrfutil setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers

----------------------------------------­
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-X12V_8/nrfutil
Storing debug log for failure in /root/.pip/pip.log
===== ARM
arm-none-eabi-gcc installed

and the contents of pip.log:

 Downloading from URL https://files.pythonhosted.org/packages/­dd/f9/75351eeaaaec8e3f45e3e0f4bd0858aada­06e815a8dde70e47fcb63ae63d/nrfutil-6.1.2­.tar.gz#sha256=1786013611dc43057231808da­2e1d469c26cd4debc3e2468db021b3fdd0ddb5f (from https://pypi.org/simple/nrfutil/)
  Running setup.py (path:/tmp/pip-build-X12V_8/nrfutil/setu­p.py) egg_info for package nrfutil
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'zipfile'
      warnings.warn(msg)
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'python_requires'
      warnings.warn(msg)
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'console'
      warnings.warn(msg)
    error in nrfutil setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers
    Complete output from command python setup.py egg_info:
    /usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'zipfile'

  warnings.warn(msg)

/usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'python_requires'

  warnings.warn(msg)

/usr/lib/python2.7/distutils/dist.py:267­: UserWarning: Unknown distribution option: 'console'

  warnings.warn(msg)

error in nrfutil setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers

----------------------------------------­
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-X12V_8/nrfutil
Exception information:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/ba­secommand.py", line 122, in main
    status = self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/co­mmands/install.py", line 290, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/lib/python2.7/dist-packages/pip/re­q.py", line 1230, in prepare_files
    req_to_install.run_egg_info()
  File "/usr/lib/python2.7/dist-packages/pip/re­q.py", line 326, in run_egg_info
    command_desc='python setup.py egg_info')
  File "/usr/lib/python2.7/dist-packages/pip/ut­il.py", line 716, in call_subprocess
    % (command_desc, proc.returncode, cwd))
InstallationError: Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-X12V_8/nrfutil

My system:

cat /proc/version
Linux version 3.16.0 (mockbuild@builder7.eng.sw.ru) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) ) #1 SMP Tue Jun 9 12:58:54 MSK 2020
jv@Emp:~/Espruino$ cat /etc/*-release
PRETTY_NAME="Debian GNU/Linux 8 (jessie)"
NAME="Debian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=debian
HOME_URL="http://www.debian.org/"
SUPPORT_URL="http://www.debian.org/suppo­rt"
BUG_REPORT_URL="https://bugs.debian.org/­"

Any help appreciated!