user: Current not implemented on linux/arm

[Renaud11232]

When the program is run without the USER environment variable set, it shows :

./arduino-cli board listall
Error: getting default arduino data dir: retrieving user home dir: user: Current not implemented on linux/arm
Error creating default configuration

This can happen for instance, when arduino-cli is used by a program launched using start-stop-daemon on boot with /etc/init.d/something

Here is the debug output:

./arduino-cli board listall --debug
ERRO[0000] Error creating default configuration          error="getting default arduino data dir: retrieving user home dir: user: Current not implemented on linux/arm"
ERRO[0000] Error creating default configuration          error="getting default arduino data dir: retrieving user home dir: user: Current not implemented on linux/arm"
Error: getting default arduino data dir: retrieving user home dir: user: Current not implemented on linux/arm
Error creating default configuration

It fails with the other commands as well.

To reproduce the issue simply do :

unset USER
./arduino-cli board listall

According to this issue cgo might be missing.

[SConaway]

If you're here for docker, run export USER=root on ubuntu.

[masci]

Fixed in #239