1st error in verify Ledger Nano S

sudo easy_install virtualenv
[sudo] password for lulu2:
Searching for virtualenv
Best match: virtualenv 15.1.0
Adding virtualenv 15.1.0 to easy-install.pth file
Installing virtualenv script to /usr/local/bin

Using /usr/local/lib/python2.7/dist-packages
Processing dependencies for virtualenv
Finished processing dependencies for virtualenv
lulu2@linux:~$ mkdir /tmp/nanos
lulu2@linux:~$ virtualenv /tmp/nanos/
New python executable in /tmp/nanos/bin/python
Installing setuptools, pip, wheel...done.
lulu2@linux:~$ source /tmp/nanos/bin/activate
(nanos) lulu2@linux:~$ pip install — no-cache-dir ledgerblue
ERROR: unknown command "install — no-cache-dir"
(nanos) lulu2@linux:~$ pip install --no-cache-dir ledgerblue
Collecting ledgerblue
  Downloading ledgerblue-0.1.16.tar.gz
Collecting hidapi>=0.7.99 (from ledgerblue)
  Downloading hidapi-0.7.99.post21.tar.gz (51kB)
    100% |████████████████████████████████| 61kB 101kB/s
Collecting protobuf>=2.6.1 (from ledgerblue)  Downloading protobuf-3.5.1-cp27-cp27mu-manylinux1_x86_64.whl (6.4MB)
    100% |████████████████████████████████| 6.4MB 107kB/s
Collecting pycrypto>=2.6.1 (from ledgerblue)
  Downloading pycrypto-2.6.1.tar.gz (446kB)
    100% |████████████████████████████████| 450kB 2.2MB/s
Collecting future (from ledgerblue)
  Downloading future-0.16.0.tar.gz (824kB)
    100% |████████████████████████████████| 829kB 1.6MB/s
Collecting ecpy>=0.8.1 (from ledgerblue)
  Downloading ECPy-0.8.3.tar.gz
ECPy requires Python '>=3' but the running Python is 2.7.14
(nanos) lulu2@linux:~$ pip3  install --no-cache-dir ledgerblue
Collecting ledgerblue
  Downloading ledgerblue-0.1.16.tar.gz
Collecting hidapi>=0.7.99 (from ledgerblue)
  Downloading hidapi-0.7.99.post21.tar.gz (51kB)
    100% |████████████████████████████████| 61kB 667kB/s
Collecting protobuf>=2.6.1 (from ledgerblue)
  Downloading protobuf-3.5.1-cp36-cp36m-manylinux1_x86_64.whl (6.4MB)
    100% |████████████████████████████████| 6.4MB 3.2MB/s
Collecting pycrypto>=2.6.1 (from ledgerblue)
  Downloading pycrypto-2.6.1.tar.gz (446kB)
    100% |████████████████████████████████| 450kB 292kB/s
Collecting future (from ledgerblue)  Downloading future-0.16.0.tar.gz (824kB)
    100% |████████████████████████████████| 829kB 599kB/s
Collecting ecpy>=0.8.1 (from ledgerblue)
  Downloading ECPy-0.8.3.tar.gz
Collecting pillow>=3.4.0 (from ledgerblue)
  Downloading Pillow-5.0.0-cp36-cp36m-manylinux1_x86_64.whl (5.9MB)
    100% |████████████████████████████████| 5.9MB 1.6MB/s
Collecting setuptools>=19.0 (from hidapi>=0.7.99->ledgerblue)
  Downloading setuptools-38.4.0-py2.py3-none-any.whl (489kB)
    100% |████████████████████████████████| 491kB 1.4MB/s
Collecting six>=1.9 (from protobuf>=2.6.1->ledgerblue)
  Downloading six-1.11.0-py2.py3-none-any.whl
Installing collected packages: setuptools, hidapi, six, protobuf, pycrypto, future, ecpy, pillow, ledgerblue
  Running setup.py install for hidapi ... error
    Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-4bxb8sp_/hidapi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-mdwixcpn-record/install-record.txt --single-version-externally-managed --compile --user --prefix=:
    running install
    running build
    running build_ext
    cythoning hid.pyx to hid.c
    building 'hid' extension
    creating build
    creating build/temp.linux-x86_64-3.6
    creating build/temp.linux-x86_64-3.6/hidapi
    creating build/temp.linux-x86_64-3.6/hidapi/libusb
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.6-sXpGnM/python3.6-3.6.3=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Ihidapi/hidapi -I/usr/include/libusb-1.0 -I/usr/include/python3.6m -c hid.c -o build/temp.linux-x86_64-3.6/hid.o
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.6-sXpGnM/python3.6-3.6.3=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Ihidapi/hidapi -I/usr/include/libusb-1.0 -I/usr/include/python3.6m -c hidapi/libusb/hid.c -o build/temp.linux-x86_64-3.6/hidapi/libusb/hid.o
    hidapi/libusb/hid.c:47:10: fatal error: libusb.h: No such file or directory
     #include <libusb.h>
              ^~~~~~~~~~
    compilation terminated.
    error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

    ----------------------------------------Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-4bxb8sp_/hidapi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-mdwixcpn-record/install-record.txt --single-version-externally-managed --compile --user --prefix=" failed with error code 1 in /tmp/pip-build-4bxb8sp_/hidapi/
(nanos) lulu2@linux:~$ python -m ledgerblue.checkGenuine --targetId 0x31100002
/tmp/nanos/bin/python: No module named ledgerblue
(nanos) lulu2@linux:~$ python3 -m ledgerblue.checkGenuine --targetId 0x31100002
/usr/bin/python3: Error while finding module specification for 'ledgerblue.checkGenuine' (ModuleNotFoundError: No module named 'ledgerblue')
(nanos) lulu2@linux:~$