Respect XDG_DATA_DIRS

[Serpentian]

Currently path to the power icons is hardcoded to /usr/share/.... However, XDG_DATA_DIRS doesn't always include this directory on read-only OSs, like NixOS. There this data is stored inside $HOME/.nix-profile/share/

nwg-drawer/main.go

Line 589 in 71ce3b5

btn := powerButton("/usr/share/nwg-drawer/img/lock.svg", *pbLock)

$XDG_DATA_DIRS should be respected, when we search for the power icons. The same thing applies to the desktop-entries.

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The possible solution would be to add $HOME/.nix-profile/share to the xdgDataDirs. Or we can get env variable XDG_DATA_DIRS directly, without hardcoding it (it seems better).

nwg-drawer/tools.go

Line 243 in 71ce3b5

xdgDataDirs = "/usr/local/share/:/usr/share/"

[nwg-piotr]

I don't care much about Nix, but yes, it could be done. If it comes to .desktop dirs, XDG_DATA_DIRS are already respected.