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xwayland: introduce WLR_XWAYLAND for specifying which Xwayland to use

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When debugging Xwayland-related issues, a common first step in debugging
has been to ask the reporter to move their real Xwayland to
/usr/bin/Xwayland.bin, and create a shell script starting Xwayland with
extra arguments under the original /usr/bin/Xwayland location.

Introducing a `WLR_XWAYLAND` environment variable makes this less
invasive, by allowing the user to swap out Xwayland without resorting to
global system changes (or source patches).
This commit is contained in:
Tudor Brindus 2020-10-03 14:16:54 -04:00 • committed by Simon Ser
parent feb0e1c74d
commit 1b0e4c7e6e
2 changed files with 11 additions and 1 deletions
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docs/env_vars.md
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@ -9,6 +9,8 @@ wlroots reads these environment variables
* *WLR_SESSION*: specifies the wlr\_session to be used (available sessions:
logind/systemd, direct)
* *WLR_DIRECT_TTY*: specifies the tty to be used (instead of using /dev/tty)
* *WLR_XWAYLAND*: specifies the path to an Xwayland binary to be used (instead
of following shell search semantics for "Xwayland")
## DRM backend