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{ lib
, stdenv
, fetchurl
, fetchpatch
, substituteAll
, meson
, ninja
, rsync
, pkg-config
, glib
, itstool
, xorg
, accountsservice
, libX11
, gnome
, systemd
, dconf
, gtk3
, libcanberra-gtk3
, pam
, libgudev
, libselinux
, keyutils
, audit
, gobject-introspection
, plymouth
, coreutils
, xorgserver
, xwayland
, dbus
, nixos-icons
, runCommand
}:
let
override = substituteAll {
src = ./org.gnome.login-screen.gschema.override;
icon = "${nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake-white.svg";
};
in
stdenv.mkDerivation (finalAttrs: {
pname = "gdm";
version = "44.1";
outputs = [ "out" "dev" ];
src = fetchurl {
url = "mirror://gnome/sources/gdm/${lib.versions.major finalAttrs.version}/${finalAttrs.pname}-${finalAttrs.version}.tar.xz";
sha256 = "aCZrOr59KPxGnQBnqsnF2rsMp5UswffCOKBJUfPcWw0=";
};
mesonFlags = [
"-Dgdm-xsession=true"
# TODO: Setup a default-path? https://gitlab.gnome.org/GNOME/gdm/-/blob/6fc40ac6aa37c8ad87c32f0b1a5d813d34bf7770/meson_options.txt#L6
"-Dinitial-vt=${finalAttrs.passthru.initialVT}"
"-Dudev-dir=${placeholder "out"}/lib/udev/rules.d"
"-Dsystemdsystemunitdir=${placeholder "out"}/lib/systemd/system"
"-Dsystemduserunitdir=${placeholder "out"}/lib/systemd/user"
"--sysconfdir=/etc"
"--localstatedir=/var"
];
nativeBuildInputs = [
dconf
glib # for glib-compile-schemas
itstool
meson
ninja
pkg-config
rsync
gobject-introspection
];
buildInputs = [
accountsservice
audit
glib
gtk3
keyutils
libX11
libcanberra-gtk3
libgudev
libselinux
pam
plymouth
systemd
xorg.libXdmcp
];
patches = [
# GDM fails to find g-s with the following error in the journal.
# gdm-x-session[976]: dbus-run-session: failed to exec 'gnome-session': No such file or directory
# https://gitlab.gnome.org/GNOME/gdm/-/merge_requests/92
(fetchpatch {
url = "https://gitlab.gnome.org/GNOME/gdm/-/commit/ccecd9c975d04da80db4cd547b67a1a94fa83292.patch";
sha256 = "5hKS9wjjhuSAYwXct5vS0dPbmPRIINJoLC0Zm1naz6Q=";
revert = true;
})
# Change hardcoded paths to nix store paths.
(substituteAll {
src = ./fix-paths.patch;
inherit coreutils plymouth xorgserver xwayland dbus;
})
# The following patches implement certain environment variables in GDM which are set by
# the gdm configuration module (nixos/modules/services/x11/display-managers/gdm.nix).
./gdm-x-session_extra_args.patch
# Allow specifying a wrapper for running the session command.
./gdm-x-session_session-wrapper.patch
# Forwards certain environment variables to the gdm-x-session child process
# to ensure that the above two patches actually work.
./gdm-session-worker_forward-vars.patch
# Set up the environment properly when launching sessions
# https://github.com/NixOS/nixpkgs/issues/48255
./reset-environment.patch
];
postPatch = ''
# Upstream checks some common paths to find an `X` binary. We already know it.
echo #!/bin/sh > build-aux/find-x-server.sh
echo "echo ${lib.getBin xorg.xorgserver}/bin/X" >> build-aux/find-x-server.sh
patchShebangs build-aux/find-x-server.sh
'';
preInstall = ''
install -D ${override} $DESTDIR/$out/share/glib-2.0/schemas/org.gnome.login-screen.gschema.override
'';
postInstall = ''
# Move stuff from DESTDIR to proper location.
# We use rsync to merge the directories.
rsync --archive "$DESTDIR/etc" "$out"
rm --recursive "$DESTDIR/etc"
for o in $(getAllOutputNames); do
if [[ "$o" = "debug" ]]; then continue; fi
rsync --archive "$DESTDIR/''${!o}" "$(dirname "''${!o}")"
rm --recursive "$DESTDIR/''${!o}"
done
# Ensure the DESTDIR is removed.
rmdir "$DESTDIR/nix/store" "$DESTDIR/nix" "$DESTDIR"
# We are setting DESTDIR so the post-install script does not compile the schemas.
glib-compile-schemas "$out/share/glib-2.0/schemas"
'';
# HACK: We want to install configuration files to $out/etc
# but GDM should read them from /etc on a NixOS system.
# With autotools, it was possible to override Make variables
# at install time but Meson does not support this
# so we need to convince it to install all files to a temporary
# location using DESTDIR and then move it to proper one in postInstall.
DESTDIR = "${placeholder "out"}/dest";
separateDebugInfo = true;
passthru = {
updateScript = gnome.updateScript {
packageName = "gdm";
attrPath = "gnome.gdm";
};
# Used in GDM NixOS module
# Don't remove.
initialVT = "7";
dconfDb = "${finalAttrs.finalPackage}/share/gdm/greeter-dconf-defaults";
dconfProfile = "user-db:user\nfile-db:${finalAttrs.passthru.dconfDb}";
tests = {
profile = runCommand "gdm-profile-test" { } ''
if test "${finalAttrs.passthru.dconfProfile}" != "$(cat ${finalAttrs.finalPackage}/share/dconf/profile/gdm)"; then
echo "GDM dconf profile changed, please update gdm.nix"
exit 1
fi
touch $out
'';
};
};
meta = with lib; {
description = "A program that manages graphical display servers and handles graphical user logins";
homepage = "https://wiki.gnome.org/Projects/GDM";
license = licenses.gpl2Plus;
maintainers = teams.gnome.members;
platforms = platforms.linux;
};
})
|