Installation script doesn't work on DietPi OS

[ydogandjiev]

Hi, I'm hitting an error with your installation script:

Installing Unicorn HAT/pHAT library for Python 2...

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting unicornhat
Using cached https://files.pythonhosted.org/packages/84/81/bd52bd6119e5b807adf975b33c310c167013afd27bcc1c98cd21e91b45e2/unicornhat-2.2.3.tar.gz
Collecting rpi_ws281x>=3.0.3 (from unicornhat)
Downloading https://files.pythonhosted.org/packages/4b/ac/1bbae8f7c916150f4260214392d68c8c166e414d8ea6f103a299a0e04179/rpi_ws281x-4.2.5.tar.gz (62kB)
100% |████████████████████████████████| 71kB 445kB/s
Building wheels for collected packages: unicornhat, rpi-ws281x
Running setup.py bdist_wheel for unicornhat ... error
Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;file='/tmp/pip-install-uFkBwH/unicornhat/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" bdist_wheel -d /tmp/pip-wheel-G3FjAy --python-tag cp27:
usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
or: -c --help [cmd1 cmd2 ...]
or: -c --help-commands
or: -c cmd --help

error: invalid command 'bdist_wheel'

---

Failed building wheel for unicornhat
Running setup.py clean for unicornhat
Running setup.py bdist_wheel for rpi-ws281x ... error
Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;file='/tmp/pip-install-uFkBwH/rpi-ws281x/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" bdist_wheel -d /tmp/pip-wheel-7RDAaZ --python-tag cp27:
usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
or: -c --help [cmd1 cmd2 ...]
or: -c --help-commands
or: -c cmd --help

error: invalid command 'bdist_wheel'

---

Failed building wheel for rpi-ws281x
Running setup.py clean for rpi-ws281x
Failed to build unicornhat rpi-ws281x
Installing collected packages: rpi-ws281x, unicornhat
Running setup.py install for rpi-ws281x ... error
Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;file='/tmp/pip-install-uFkBwH/rpi-ws281x/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-record-tujBWS/install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_py
Compiling ws281x library...
creating build
creating build/lib.linux-armv6l-2.7
creating build/lib.linux-armv6l-2.7/rpi_ws281x
copying rpi_ws281x/rpi_ws281x.py -> build/lib.linux-armv6l-2.7/rpi_ws281x
copying rpi_ws281x/init.py -> build/lib.linux-armv6l-2.7/rpi_ws281x
running build_ext
building '_rpi_ws281x' extension
creating build/temp.linux-armv6l-2.7
creating build/temp.linux-armv6l-2.7/lib
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-InigCj/python2.7-2.7.16=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I. -I/usr/include/python2.7 -c rpi_ws281x_wrap.c -o build/temp.linux-armv6l-2.7/rpi_ws281x_wrap.o
unable to execute 'arm-linux-gnueabihf-gcc': No such file or directory
error: command 'arm-linux-gnueabihf-gcc' failed with exit status 1

----------------------------------------

Command "/usr/bin/python -u -c "import setuptools, tokenize;file='/tmp/pip-install-uFkBwH/rpi-ws281x/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-record-tujBWS/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-install-uFkBwH/rpi-ws281x/
Python 2 library install failed!
If problems persist, visit forums.pimoroni.com for support

[ydogandjiev]

First I had to install python-setuptools:
sudo apt-get install -y python-setuptools

Now I need to install wheel:
pip install wheel

It would be good if the installation script installed all of these missing dependencies instead of failing.

[ydogandjiev]

Looks like one more dependency is missing. I am now installing it:
sudo apt-get install gcc-arm-linux-gnueabihf