Handle OS compatibility (Linux and Windows for now)

[Hellfar]

Right now we are only compatible with Linux.
It is essential that we also approach Windows.

I will need help to test the same features on Windows (different versions) and Linux.

[naturallymitchell]

android too

[Hellfar]

I propose:

Linux

HOME = os.getenv("HOME")
REPOSITORY_HOME = HOME .. "/.mp/packages/"
MP_HOME = "/usr/share/mp/"
INSTALL_HOME = "/usr/share/"
BIN_HOME = "/usr/bin/"

DEFAULT_PATH           = "./"
DEFAULT_SAVE_DIRECTORY = ".mp/"

Windows

REPOSITORY_HOME = "%AppData%/Roaming/.mp/packages/"
MP_HOME = "%ProgramFiles%/mp/"
INSTALL_HOME = MP_HOME
BIN_HOME = MP_HOME

DEFAULT_PATH           = "./"
DEFAULT_SAVE_DIRECTORY = ".mp/"

(I will take care of the separators).

Android

Open to suggestions.

[sh-zam]

We are using Cmder for Windows, so we could do the way torchbear does it: https://github.com/foundpatterns/torchbear/blob/master/install.sh#L144

Similar with Android.

[dariusc93]

For windows, it would be best to make sure that any variables youre using will work (eg %AppData%, etc) within lua. Using os.getenv may work but that is something that should be up for testing. Like @sh-zam mentioned we do use cmder and there is a environment variable used to detect if cmder is being used which. It probably would be wise to store any packages in AppData or probably have them stored in the "home" directory (since cmder do have a $HOME variable which points to the user profile directory in windows). For android, it technically can be the same as what is being done with linux but the MP_HOME, INSTALL_HOME, and BIN_HOME would have to be changed to fit the path that is used on termux.

On a side note: It would be best to use /usr/local over /usr

[Hellfar]

How was it handled in the end ?