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gnome-flashback: add module support to gnome-panel for installing applets

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Co-authored-by: Jan Tojnar <jtojnar@gmail.com>
This commit is contained in:
Patrick Chilton 2021-06-01 09:59:58 +02:00
parent 424cd7d999
commit 6bcd4fe4ef
4 changed files with 84 additions and 10 deletions
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12
nixos/modules/services/x11/desktop-managers/gnome.nix
View file

@ -261,6 +261,17 @@ in
default = [];
description = "Other GNOME Flashback sessions to enable.";
};
panelModulePackages = mkOption {
default = [ pkgs.gnome.gnome-applets ];
type = types.listOf types.path;
description = ''
Packages containing modules that should be made available to <literal>gnome-panel</literal> (usually for applets).
If you're packaging something to use here, please install the modules in <literal>$out/lib/gnome-panel/modules</literal>.
'';
example = literalExample "[ pkgs.gnome.gnome-applets ]";
};
};
};
@ -323,6 +334,7 @@ in
(wm:
pkgs.gnome.gnome-flashback.mkSessionForWm {
inherit (wm) wmName wmLabel wmCommand enableGnomePanel;
inherit (cfg.flashback) panelModulePackages;
}
) flashbackWms;

44
pkgs/desktops/gnome/misc/gnome-flashback/default.nix
View file

@ -23,10 +23,10 @@
, pam
, wrapGAppsHook
, writeTextFile
, writeShellScriptBin
, xkeyboard_config
, xorg
, runCommand
, buildEnv
}:
let
pname = "gnome-flashback";
@ -126,7 +126,7 @@ let
versionPolicy = "odd-unstable";
};
mkSessionForWm = { wmName, wmLabel, wmCommand, enableGnomePanel }:
mkSessionForWm = { wmName, wmLabel, wmCommand, enableGnomePanel, panelModulePackages }:
let
wmApplication = writeTextFile {
name = "gnome-flashback-${wmName}-wm";
@ -155,15 +155,39 @@ let
'';
};
executable = writeShellScriptBin "gnome-flashback-${wmName}" ''
if [ -z $XDG_CURRENT_DESKTOP ]; then
export XDG_CURRENT_DESKTOP="GNOME-Flashback:GNOME"
fi
# gnome-panel will only look for applets in a single directory so symlink them into here.
panelModulesEnv = buildEnv {
name = "gnome-panel-modules-env";
# We always want to find the built-in panel applets.
paths = [ gnome-panel gnome-flashback ] ++ panelModulePackages;
pathsToLink = [ "/lib/gnome-panel/modules" ];
};
export XDG_DATA_DIRS=${wmApplication}/share:${gnomeSession}/share:${gnome-flashback}/share:${gnome-panel}/share:$XDG_DATA_DIRS
executable = stdenv.mkDerivation {
name = "gnome-flashback-${wmName}";
nativeBuildInputs = [ glib wrapGAppsHook ];
buildInputs = [ gnome-flashback ] ++ lib.optionals enableGnomePanel ([ gnome-panel ] ++ panelModulePackages);
exec ${gnome-session}/bin/gnome-session --session=gnome-flashback-${wmName} "$@"
'';
# We want to use the wrapGAppsHook mechanism to wrap gnome-session
# with the environment that gnome-flashback and gnome-panel need to
# run, including the configured applet packages. This is only possible
# in the fixup phase, so turn everything else off.
dontUnpack = true;
dontConfigure = true;
dontBuild = true;
dontInstall = true;
dontWrapGApps = true; # We want to do the wrapping ourselves.
# gnome-flashback and gnome-panel need to be added to XDG_DATA_DIRS so that their .desktop files can be found by gnome-session.
preFixup = ''
makeWrapper ${gnome-session}/bin/gnome-session $out \
--add-flags "--session=gnome-flashback-${wmName}" \
--set-default XDG_CURRENT_DESKTOP 'GNOME-Flashback:GNOME' \
--prefix XDG_DATA_DIRS : '${lib.makeSearchPath "share" ([ wmApplication gnomeSession gnome-flashback ] ++ lib.optional enableGnomePanel gnome-panel)}' \
"''${gappsWrapperArgs[@]}" \
${lib.optionalString enableGnomePanel "--set NIX_GNOME_PANEL_MODULESDIR '${panelModulesEnv}/lib/gnome-panel/modules'"}
'';
};
in
writeTextFile
@ -174,7 +198,7 @@ let
[Desktop Entry]
Name=GNOME Flashback (${wmLabel})
Comment=This session logs you into GNOME Flashback with ${wmLabel}
Exec=${executable}/bin/gnome-flashback-${wmName}
Exec=${executable}
TryExec=${wmCommand}
Type=Application
DesktopNames=GNOME-Flashback;GNOME;

7
pkgs/desktops/gnome/misc/gnome-panel/default.nix
View file

@ -32,6 +32,13 @@ stdenv.mkDerivation rec {
hash = "sha256-nxNQde3GZs8rnKkd41xnA+KxdxwQp3B0FPtlbCilmzs=";
};
patches = [
# Load modules from path in `NIX_GNOME_PANEL_MODULESDIR` environment variable
# instead of gnome-panel’s libdir so that the NixOS module can make gnome-panel
# load modules from other packages as well.
./modulesdir-env-var.patch
];
# make .desktop Exec absolute
postPatch = ''
patch -p0 <<END_PATCH

31
pkgs/desktops/gnome/misc/gnome-panel/modulesdir-env-var.patch Normal file
View file

@ -0,0 +1,31 @@
diff --git a/gnome-panel/gp-module-manager.c b/gnome-panel/gp-module-manager.c
index 58447fd84..7af99de7d 100644
--- a/gnome-panel/gp-module-manager.c
+++ b/gnome-panel/gp-module-manager.c
@@ -49,8 +49,16 @@ load_modules (GpModuleManager *self)
{
GDir *dir;
const gchar *name;
+ const gchar *modules_dir;
- dir = g_dir_open (MODULESDIR, 0, NULL);
+ modules_dir = g_getenv ("NIX_GNOME_PANEL_MODULESDIR");
+
+ if (!modules_dir) {
+ g_warning ("The NIX_GNOME_PANEL_MODULESDIR environment variable was not set, modules will not be loaded.");
+ return;
+ }
+
+ dir = g_dir_open (modules_dir, 0, NULL);
if (!dir)
return;
@@ -63,7 +71,7 @@ load_modules (GpModuleManager *self)
if (!g_str_has_suffix (name, ".so"))
continue;
- path = g_build_filename (MODULESDIR, name, NULL);
+ path = g_build_filename (modules_dir, name, NULL);
module = gp_module_new_from_path (path);
g_free (path);