nixos/slim: remove

The SLIM project is abandoned and their last release was in 2013.
Because of this it poses a security risk to systems, no one is working
on it or picked up maintenance. It also lacks compatibility with systemd
and logind sessions. For users, there liikely isn't anything like slim
that's as lightweight in terms of dependencies.

5 files changed, 16 insertions, 160 deletions

diff --git a/nixos/modules/hardware/video/nvidia.nix b/nixos/modules/hardware/video/nvidia.nix
index 3ab2afc9740..1e18e927ec6 100644
--- a/nixos/modules/hardware/video/nvidia.nix
+++ b/nixos/modules/hardware/video/nvidia.nix
@@ -75,7 +75,7 @@ in
 
         Note that this configuration will only be successful when a display manager
         for which the <option>services.xserver.displayManager.setupCommands</option>
-        option is supported is used; notably, SLiM is not supported.
+        option is supported is used.
       '';
     };
 
diff --git a/nixos/modules/services/x11/desktop-managers/plasma5.nix b/nixos/modules/services/x11/desktop-managers/plasma5.nix
index b6fb7218da6..b48ca3fad93 100644
--- a/nixos/modules/services/x11/desktop-managers/plasma5.nix
+++ b/nixos/modules/services/x11/desktop-managers/plasma5.nix
@@ -232,7 +232,6 @@ in
       security.pam.services.kdm.enableKwallet = true;
       security.pam.services.lightdm.enableKwallet = true;
       security.pam.services.sddm.enableKwallet = true;
-      security.pam.services.slim.enableKwallet = true;
 
       xdg.portal.enable = true;
       xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-kde ];
diff --git a/nixos/modules/services/x11/display-managers/default.nix b/nixos/modules/services/x11/display-managers/default.nix
index bf6b048654b..b66856fd4d4 100644
--- a/nixos/modules/services/x11/display-managers/default.nix
+++ b/nixos/modules/services/x11/display-managers/default.nix
@@ -1,9 +1,9 @@
 # This module declares the options to define a *display manager*, the
-# program responsible for handling X logins (such as xdm, gdb, or
-# SLiM).  The display manager allows the user to select a *session
-# type*.  When the user logs in, the display manager starts the
+# program responsible for handling X logins (such as LightDM, GDM, or SDDM).
+# The display manager allows the user to select a *session
+# type*. When the user logs in, the display manager starts the
 # *session script* ("xsession" below) to launch the selected session
-# type.  The session type defines two things: the *desktop manager*
+# type. The session type defines two things: the *desktop manager*
 # (e.g., KDE, Gnome or a plain xterm), and optionally the *window
 # manager* (e.g. kwin or twm).
 
@@ -196,7 +196,6 @@ let
         fi
       '') cfg.displayManager.extraSessionFilePackages}
 
-      
       ${concatMapStrings (pkg: ''
         if test -d ${pkg}/share/wayland-sessions; then
           mkdir -p "$out/share/wayland-sessions"
@@ -322,7 +321,7 @@ in
         execCmd = mkOption {
           type = types.str;
           example = literalExample ''
-            "''${pkgs.slim}/bin/slim"
+            "''${pkgs.lightdm}/bin/lightdm"
           '';
           description = "Command to start the display manager.";
         };
@@ -330,7 +329,6 @@ in
         environment = mkOption {
           type = types.attrsOf types.unspecified;
           default = {};
-          example = { SLIM_CFGFILE = "/etc/slim.conf"; };
           description = "Additional environment variables needed by the display manager.";
         };
 
diff --git a/nixos/modules/services/x11/display-managers/slim.nix b/nixos/modules/services/x11/display-managers/slim.nix
index 124660a43f0..4b0948a5b7a 100644
--- a/nixos/modules/services/x11/display-managers/slim.nix
+++ b/nixos/modules/services/x11/display-managers/slim.nix
@@ -2,155 +2,15 @@
 
 with lib;
 
-let
-
-  dmcfg = config.services.xserver.displayManager;
-
-  cfg = dmcfg.slim;
-
-  slimConfig = pkgs.writeText "slim.cfg"
-    ''
-      xauth_path ${dmcfg.xauthBin}
-      default_xserver ${dmcfg.xserverBin}
-      xserver_arguments ${toString dmcfg.xserverArgs}
-      sessiondir ${dmcfg.session.desktops}/share/xsessions
-      login_cmd exec ${pkgs.runtimeShell} ${dmcfg.session.wrapper} "%session"
-      halt_cmd ${config.systemd.package}/sbin/shutdown -h now
-      reboot_cmd ${config.systemd.package}/sbin/shutdown -r now
-      logfile /dev/stderr
-      ${optionalString (cfg.defaultUser != null) ("default_user " + cfg.defaultUser)}
-      ${optionalString (cfg.defaultUser != null) ("focus_password yes")}
-      ${optionalString cfg.autoLogin "auto_login yes"}
-      ${optionalString (cfg.consoleCmd != null) "console_cmd ${cfg.consoleCmd}"}
-      ${cfg.extraConfig}
-    '';
-
-  # Unpack the SLiM theme, or use the default.
-  slimThemesDir =
-    let
-      unpackedTheme = pkgs.runCommand "slim-theme" { preferLocalBuild = true; }
-        ''
-          mkdir -p $out
-          cd $out
-          unpackFile ${cfg.theme}
-          ln -s * default
-        '';
-    in if cfg.theme == null then "${pkgs.slim}/share/slim/themes" else unpackedTheme;
-
-in
-
 {
-
-  ###### interface
-
-  options = {
-
-    services.xserver.displayManager.slim = {
-
-      enable = mkOption {
-        type = types.bool;
-        default = false;
-        description = ''
-          Whether to enable SLiM as the display manager.
-        '';
-      };
-
-      theme = mkOption {
-        type = types.nullOr types.path;
-        default = pkgs.fetchurl {
-          url = "https://github.com/jagajaga/nixos-slim-theme/archive/2.0.tar.gz";
-          sha256 = "0lldizhigx7bjhxkipii87y432hlf5wdvamnfxrryf9z7zkfypc8";
-        };
-        defaultText = ''pkgs.fetchurl {
-          url = "https://github.com/jagajaga/nixos-slim-theme/archive/2.0.tar.gz";
-          sha256 = "0lldizhigx7bjhxkipii87y432hlf5wdvamnfxrryf9z7zkfypc8";
-        }'';
-        example = literalExample ''
-          pkgs.fetchurl {
-            url = "mirror://sourceforge/slim.berlios/slim-wave.tar.gz";
-            sha256 = "0ndr419i5myzcylvxb89m9grl2xyq6fbnyc3lkd711mzlmnnfxdy";
-          }
-        '';
-        description = ''
-          The theme for the SLiM login manager.  If not specified, SLiM's
-          default theme is used.  See <link
-          xlink:href='http://slim.berlios.de/themes01.php'/> for a
-          collection of themes. TODO: berlios shut down.
-        '';
-      };
-
-      defaultUser = mkOption {
-        type = types.nullOr types.str;
-        default = null;
-        example = "login";
-        description = ''
-          The default user to load. If you put a username here you
-          get it automatically loaded into the username field, and
-          the focus is placed on the password.
-        '';
-      };
-
-      autoLogin = mkOption {
-        type = types.bool;
-        default = false;
-        description = ''
-          Automatically log in as the default user.
-        '';
-      };
-
-      extraConfig = mkOption {
-        type = types.lines;
-        default = "";
-        description = ''
-          Extra configuration options for SLiM login manager. Do not
-          add options that can be configured directly.
-        '';
-      };
-
-      consoleCmd = mkOption {
-        type = types.nullOr types.str;
-        default = ''
-          ${pkgs.xterm}/bin/xterm -C -fg white -bg black +sb -T "Console login" -e ${pkgs.shadow}/bin/login
-        '';
-        defaultText = ''
-          ''${pkgs.xterm}/bin/xterm -C -fg white -bg black +sb -T "Console login" -e ''${pkgs.shadow}/bin/login
-        '';
-        description = ''
-          The command to run when "console" is given as the username.
-        '';
-      };
-    };
-
-  };
-
-
-  ###### implementation
-
-  config = mkIf cfg.enable {
-
-    services.xserver.displayManager.job =
-      { environment =
-          { SLIM_CFGFILE = slimConfig;
-            SLIM_THEMESDIR = slimThemesDir;
-          };
-        execCmd = "exec ${pkgs.slim}/bin/slim";
-      };
-
-    services.xserver.displayManager.sessionCommands =
-      ''
-        # Export the config/themes for slimlock.
-        export SLIM_THEMESDIR=${slimThemesDir}
-      '';
-
-    # Allow null passwords so that the user can login as root on the
-    # installation CD.
-    security.pam.services.slim = { allowNullPassword = true; startSession = true; };
-
-    # Allow slimlock to work.
-    security.pam.services.slimlock = {};
-
-    environment.systemPackages = [ pkgs.slim ];
-
-  };
-
+  # added 2019-11-11
+  imports = [
+    (mkRemovedOptionModule [ "services" "xserver" "displayManager" "slim" ] ''
+      The SLIM project is abandoned and their last release was in 2013.
+      Because of this it poses a security risk to your system.
+      Other issues include it not fully supporting systemd and logind sessions.
+      Please use a different display manager such as LightDM, SDDM, or GDM.
+      You can also use the startx module which uses Xinitrc.
+    '')
+  ];
 }
diff --git a/nixos/modules/services/x11/xserver.nix b/nixos/modules/services/x11/xserver.nix
index a8406544a72..70f01dbdbf5 100644
--- a/nixos/modules/services/x11/xserver.nix
+++ b/nixos/modules/services/x11/xserver.nix
@@ -557,7 +557,6 @@ in
           default = !( dmconf.auto.enable
                     || dmconf.gdm.enable
                     || dmconf.sddm.enable
-                    || dmconf.slim.enable
                     || dmconf.xpra.enable );
       in mkIf (default) true;