nixos/gnome3: override schemas using env variable

For some reason, the GNOME 3.26 update broke the overrides. It turns
out the overrides now need to come before the overridden schemas in the
XDG_DATA_DIRS variable. This is not possible in general due to applications
prefixing the variable (e.g. in wrapGAppsHook).

To fix this, a new environment variable NIX_GSETTINGS_OVERRIDES_DIR
was introduced. It has greater priority than XDG_DATA_DIRS but lower
than GSETTINGS_SCHEMA_DIR. A separate variable was chosen in order not
to block the built-in one for users.
This commit is contained in:
Jan Tojnar 2017-11-15 03:38:20 +01:00
parent 4920d4fff2
commit 1566de20c7
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@ -153,7 +153,7 @@ in {
export XDG_DATA_DIRS=$XDG_DATA_DIRS''${XDG_DATA_DIRS:+:}${mimeAppsList}/share
# Override gsettings-desktop-schema
export XDG_DATA_DIRS=${nixos-gsettings-desktop-schemas}/share/gsettings-schemas/nixos-gsettings-overrides''${XDG_DATA_DIRS:+:}$XDG_DATA_DIRS
export NIX_GSETTINGS_OVERRIDES_DIR=${nixos-gsettings-desktop-schemas}/share/gsettings-schemas/nixos-gsettings-overrides/glib-2.0/schemas
# Let nautilus find extensions
export NAUTILUS_EXTENSION_DIR=${config.system.path}/lib/nautilus/extensions-3.0/