Make the odin root directory configurable through an environment variable

[gingerBill]

Is your feature request related to a problem? Please describe.
Make the odin root directory configurable through an environment variable. Currently and by default for the proposal, it will default to the directory that the executable exists in.

Describe the solution you'd like

set ODIN_ROOT=path/to/new/root

[ThisDevDane]

Shouldn't we also have an ODIN_SHARED so you can also separate the shared collection?

[gingerBill]

shared is weird since by default it assumes it is located in ODIN_ROOT.
You can already override shared's location with -collection:shared=path/to/shared.

Why is ODIN_ROOT different? Because I need a root directory for other tools in the future, not just the core library collection.

[ThisDevDane]

I know it's assumed to be in ODIN_ROOT by default, but you can make it so that is assumed if ODIN_SHARED is not set, but if it is, remove that assumption and just use the path in ODIN_SHARED.
I know you can override it on the CLI but would be annoying having to do that for everything of you wanna store shared somewhere differently. I don't see a good reason to not have ODIN_SHARED

[gingerBill]

I am not a fan of having two way to do things. The reason for ODIN_ROOT is purely because I will be storing more in the ODIN_ROOT beyond core:, such as many executables and DLLs for external tools like odinfmt.

It might have been better to not have shared: in the first place.

[oskarnp]

It might have been better to not have shared: in the first place.
👍

[ghost]

$ODIN_ROOT/shared < $ODIN_SHARED < -collection:shared=path
If checked in this order i think it's fine and useful. I don't want to put my shared stuff in Odin's root, and $ODIN_SHARED seems like a better alternative, since i already define a varible and call it like this for every project: -collection:shared=$ODIN_SHARED. I don't see it being an overcomplication.

[gingerBill]

Implemented in 06e0da9