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.

18 files changed, 18 insertions, 676 deletions

diff --git a/nixos/lib/testing-python.nix b/nixos/lib/testing-python.nix
index 21f6172e9671d..22a6e7a6cc037 100644
--- a/nixos/lib/testing-python.nix
+++ b/nixos/lib/testing-python.nix
@@ -258,7 +258,6 @@ in rec {
           inherit require;
           virtualisation.memorySize = 1024;
           services.xserver.enable = true;
-          services.xserver.displayManager.slim.enable = false;
           services.xserver.displayManager.auto.enable = true;
           services.xserver.windowManager.default = "icewm";
           services.xserver.windowManager.icewm.enable = true;
diff --git a/nixos/lib/testing.nix b/nixos/lib/testing.nix
index 7670687710363..a5f060a8d8e30 100644
--- a/nixos/lib/testing.nix
+++ b/nixos/lib/testing.nix
@@ -248,7 +248,6 @@ in rec {
           inherit require;
           virtualisation.memorySize = 1024;
           services.xserver.enable = true;
-          services.xserver.displayManager.slim.enable = false;
           services.xserver.displayManager.auto.enable = true;
           services.xserver.windowManager.default = "icewm";
           services.xserver.windowManager.icewm.enable = true;
diff --git a/nixos/modules/hardware/video/nvidia.nix b/nixos/modules/hardware/video/nvidia.nix
index 3ab2afc974070..1e18e927ec6ee 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 b6fb7218da6f6..b48ca3fad9390 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 bf6b048654b39..b66856fd4d44e 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 124660a43f076..4b0948a5b7a54 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 a8406544a72f5..70f01dbdbf597 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;
 
diff --git a/nixos/release-combined.nix b/nixos/release-combined.nix
index 9e2109d88b5fc..1bcab5cab098f 100644
--- a/nixos/release-combined.nix
+++ b/nixos/release-combined.nix
@@ -133,7 +133,6 @@ in rec {
         (all nixos.tests.proxy)
         (all nixos.tests.sddm.default)
         (all nixos.tests.simple)
-        (all nixos.tests.slim)
         (all nixos.tests.switchTest)
         (all nixos.tests.udisks2)
         (all nixos.tests.xfce)
diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index 9db505a27d41c..2f480f9ea3e58 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -247,7 +247,6 @@ in
   shiori = handleTest ./shiori.nix {};
   signal-desktop = handleTest ./signal-desktop.nix {};
   simple = handleTest ./simple.nix {};
-  slim = handleTest ./slim.nix {};
   slurm = handleTest ./slurm.nix {};
   smokeping = handleTest ./smokeping.nix {};
   snapper = handleTest ./snapper.nix {};
diff --git a/nixos/tests/slim.nix b/nixos/tests/slim.nix
deleted file mode 100644
index 42c87dfa039d2..0000000000000
--- a/nixos/tests/slim.nix
+++ /dev/null
@@ -1,66 +0,0 @@
-import ./make-test.nix ({ pkgs, ...} : {
-  name = "slim";
-
-  meta = with pkgs.stdenv.lib.maintainers; {
-    maintainers = [ aszlig ];
-  };
-
-  machine = { pkgs, ... }: {
-    imports = [ ./common/user-account.nix ];
-    services.xserver.enable = true;
-    services.xserver.windowManager.default = "icewm";
-    services.xserver.windowManager.icewm.enable = true;
-    services.xserver.desktopManager.default = "none";
-    services.xserver.displayManager.slim = {
-      enable = true;
-
-      # Use a custom theme in order to get best OCR results
-      theme = pkgs.runCommand "slim-theme-ocr" {
-        nativeBuildInputs = [ pkgs.imagemagick ];
-      } ''
-        mkdir "$out"
-        convert -size 1x1 xc:white "$out/background.jpg"
-        convert -size 200x100 xc:white "$out/panel.jpg"
-        cat > "$out/slim.theme" <<EOF
-        background_color #ffffff
-        background_style tile
-
-        input_fgcolor #000000
-        msg_color #000000
-
-        session_color #000000
-        session_font Verdana:size=16:bold
-
-        username_msg Username:
-        username_font Verdana:size=16:bold
-        username_color #000000
-        username_x 50%
-        username_y 40%
-
-        password_msg Password:
-        password_x 50%
-        password_y 40%
-        EOF
-      '';
-    };
-  };
-
-  enableOCR = true;
-
-  testScript = { nodes, ... }: let
-    user = nodes.machine.config.users.users.alice;
-  in ''
-    startAll;
-    $machine->waitForText(qr/Username:/);
-    $machine->sendChars("${user.name}\n");
-    $machine->waitForText(qr/Password:/);
-    $machine->sendChars("${user.password}\n");
-
-    $machine->waitForFile('${user.home}/.Xauthority');
-    $machine->succeed('xauth merge ${user.home}/.Xauthority');
-    $machine->waitForWindow('^IceWM ');
-
-    # Make sure SLiM doesn't create a log file
-    $machine->fail('test -e /var/log/slim.log');
-  '';
-})
diff --git a/pkgs/applications/display-managers/slim/default.nix b/pkgs/applications/display-managers/slim/default.nix
deleted file mode 100644
index e504c09e43e6b..0000000000000
--- a/pkgs/applications/display-managers/slim/default.nix
+++ /dev/null
@@ -1,55 +0,0 @@
-{ stdenv, fetchurl, fetchpatch, cmake, pkgconfig, xorg, libjpeg, libpng
-, fontconfig, freetype, pam, dbus, makeWrapper }:
-
-stdenv.mkDerivation rec {
-  name = "slim-1.3.6";
-
-  src = fetchurl {
-    url = "mirror://sourceforge/slim.berlios/${name}.tar.gz";
-    sha256 = "1pqhk22jb4aja4hkrm7rjgbgzjyh7i4zswdgf5nw862l2znzxpi1";
-  };
-
-  patches =
-    [ # Allow the paths of the configuration file and theme directory to
-      # be set at runtime.
-      ./runtime-paths.patch
-
-      # Exit after the user's session has finished.  This works around
-      # slim's broken PAM session handling (see
-      # http://developer.berlios.de/bugs/?func=detailbug&bug_id=19102&group_id=2663).
-      ./run-once.patch
-
-      # Ensure that sessions appear in sort order, rather than in
-      # directory order.
-      ./sort-sessions.patch
-
-      # Allow to set logfile to a special "/dev/stderr" in order to continue
-      # logging to stderr and thus to the journal.
-      ./no-logfile.patch
-    ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl (fetchpatch {
-      url = "https://raw.githubusercontent.com/gentoo/musl/8eddda8072add075ebf56cf6d288bc1450d6b5f8/x11-misc/slim/files/slim-1.3.6-add-missing-libgen_h.patch";
-      sha256 = "0f82672s2r2cmdqfn2mbg3di76mbla9n0ik20p2gv4igi6p866xm";
-    });
-
-  preConfigure = "substituteInPlace CMakeLists.txt --replace /lib $out/lib";
-
-  cmakeFlags = [ "-DUSE_PAM=1" ];
-
-  NIX_CFLAGS_COMPILE = "-I${freetype.dev}/include/freetype -std=c++11";
-
-  enableParallelBuilding = true;
-
-  buildInputs =
-    [ cmake pkgconfig libjpeg libpng fontconfig freetype
-      pam dbus
-      xorg.libX11 xorg.libXext xorg.libXrandr xorg.libXrender xorg.libXmu xorg.libXft makeWrapper
-    ];
-
-  NIX_CFLAGS_LINK = "-lXmu";
-
-  meta = {
-    homepage = https://sourceforge.net/projects/slim.berlios/; # berlios shut down; I found no replacement yet
-    platforms = stdenv.lib.platforms.linux;
-    license = stdenv.lib.licenses.gpl2;
-  };
-}
diff --git a/pkgs/applications/display-managers/slim/no-logfile.patch b/pkgs/applications/display-managers/slim/no-logfile.patch
deleted file mode 100644
index f2f5f15499307..0000000000000
--- a/pkgs/applications/display-managers/slim/no-logfile.patch
+++ /dev/null
@@ -1,80 +0,0 @@
-diff --git a/log.cpp b/log.cpp
-index b44677a..7c89dda 100644
---- a/log.cpp
-+++ b/log.cpp
-@@ -1,23 +1,31 @@
- #include "log.h"
- #include <iostream>
-+#include <cstring>
- 
- bool
- LogUnit::openLog(const char * filename)
- {
--	if (logFile.is_open()) {
-+	if (isFile && logFile.is_open()) {
- 		cerr << APPNAME
- 			<< ": opening a new Log file, while another is already open"
- 			<< endl;
--		logFile.close();
-+		closeLog();
- 	}
--	logFile.open(filename, ios_base::app);
- 
--	return !(logFile.fail());
-+	if (strcmp(filename, "/dev/stderr") == 0) {
-+		isFile = false;
-+		return true;
-+	} else {
-+		logFile.open(filename, ios_base::app);
-+		isFile = true;
-+		return !(logFile.fail());
-+	}
- }
- 
- void
- LogUnit::closeLog()
- {
-+	if (!isFile) return;
- 	if (logFile.is_open())
- 		logFile.close();
- }
-diff --git a/log.h b/log.h
-index b7810be..ad548a2 100644
---- a/log.h
-+++ b/log.h
-@@ -9,11 +9,14 @@
- #endif
- #include "const.h"
- #include <fstream>
-+#include <iostream>
- 
- using namespace std;
- 
- static class LogUnit {
- 	ofstream logFile;
-+	bool isFile;
-+	inline ostream &getStream() { return isFile ? logFile : cerr; }
- public:
- 	bool openLog(const char * filename);
- 	void closeLog();
-@@ -22,17 +25,17 @@ public:
- 
- 	template<typename Type>
- 	LogUnit & operator<<(const Type & text) {
--		logFile << text; logFile.flush();
-+		getStream() << text; getStream().flush();
- 		return *this;
- 	}
- 
- 	LogUnit & operator<<(ostream & (*fp)(ostream&)) {
--		logFile << fp; logFile.flush();
-+		getStream() << fp; getStream().flush();
- 		return *this;
- 	}
- 
- 	LogUnit & operator<<(ios_base & (*fp)(ios_base&)) {
--		logFile << fp; logFile.flush();
-+		getStream() << fp; getStream().flush();
- 		return *this;
- 	}
- } logStream;
diff --git a/pkgs/applications/display-managers/slim/run-once.patch b/pkgs/applications/display-managers/slim/run-once.patch
deleted file mode 100644
index 78f1454a883e0..0000000000000
--- a/pkgs/applications/display-managers/slim/run-once.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -ru -x '*~' slim-1.3.6-orig/app.cpp slim-1.3.6/app.cpp
---- slim-1.3.6-orig/app.cpp	2013-10-15 11:02:55.629263422 +0200
-+++ slim-1.3.6/app.cpp	2013-10-15 13:00:10.141210784 +0200
-@@ -816,7 +822,7 @@
- 	StopServer();
- 	RemoveLock();
- 	while (waitpid(-1, NULL, WNOHANG) > 0); /* Collects all dead childrens */
--	Run();
-+	exit(OK_EXIT);
- }
- 
- void App::KillAllClients(Bool top) {
diff --git a/pkgs/applications/display-managers/slim/runtime-paths.patch b/pkgs/applications/display-managers/slim/runtime-paths.patch
deleted file mode 100644
index 5a8e07bfbf07e..0000000000000
--- a/pkgs/applications/display-managers/slim/runtime-paths.patch
+++ /dev/null
@@ -1,70 +0,0 @@
-diff -ru slim-1.3.6-orig/app.cpp slim-1.3.6/app.cpp
---- slim-1.3.6-orig/app.cpp	2013-10-02 00:38:05.000000000 +0200
-+++ slim-1.3.6/app.cpp	2014-03-30 19:01:04.115414201 +0200
-@@ -200,7 +200,9 @@
- 
- 	/* Read configuration and theme */
- 	cfg = new Cfg;
--	cfg->readConf(CFGFILE);
-+	char *cfgfile = getenv("SLIM_CFGFILE");
-+	if (!cfgfile) cfgfile = CFGFILE;
-+	cfg->readConf(cfgfile);
- 	string themebase = "";
- 	string themefile = "";
- 	string themedir = "";
-@@ -208,7 +210,9 @@
- 	if (testing) {
- 		themeName = testtheme;
- 	} else {
--		themebase = string(THEMESDIR) + "/";
-+		char *themesdir = getenv("SLIM_THEMESDIR");
-+		if (!themesdir) themesdir = THEMESDIR;
-+		themebase = string(themesdir) + "/";
- 		themeName = cfg->getOption("current_theme");
- 		string::size_type pos;
- 		if ((pos = themeName.find(",")) != string::npos) {
-diff -ru slim-1.3.6-orig/CMakeLists.txt slim-1.3.6/CMakeLists.txt
---- slim-1.3.6-orig/CMakeLists.txt	2013-10-02 00:38:05.000000000 +0200
-+++ slim-1.3.6/CMakeLists.txt	2014-03-30 19:16:48.445069729 +0200
-@@ -23,7 +23,7 @@
- 
- set(CMAKE_INSTALL_PREFIX "/usr/local" CACHE PATH "Installation Directory")
- set(PKGDATADIR "${CMAKE_INSTALL_PREFIX}/share/slim")
--set(SYSCONFDIR "/etc")
-+set(SYSCONFDIR "$ENV{out}/etc")
- set(LIBDIR "/lib")
- set(MANDIR "${CMAKE_INSTALL_PREFIX}/share/man")
- 
-@@ -40,7 +40,7 @@
- set(SLIM_DEFINITIONS ${SLIM_DEFINITIONS} "-DPACKAGE=\"slim\"")
- set(SLIM_DEFINITIONS ${SLIM_DEFINITIONS} "-DVERSION=\"${SLIM_VERSION}\"")
- set(SLIM_DEFINITIONS ${SLIM_DEFINITIONS} "-DPKGDATADIR=\"${PKGDATADIR}\"")
--set(SLIM_DEFINITIONS ${SLIM_DEFINITIONS} "-DSYSCONFDIR=\"${SYSCONFDIR}\"")
-+set(SLIM_DEFINITIONS ${SLIM_DEFINITIONS} "-DSYSCONFDIR=\"/etc\"")
- 
- # Flags
- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -g -O2")
-Only in slim-1.3.6: CMakeLists.txt~
-diff -ru slim-1.3.6-orig/slimlock.cpp slim-1.3.6/slimlock.cpp
---- slim-1.3.6-orig/slimlock.cpp	2013-10-02 00:38:05.000000000 +0200
-+++ slim-1.3.6/slimlock.cpp	2014-03-30 19:01:04.115414201 +0200
-@@ -106,13 +106,17 @@
- 	unsigned int cfg_passwd_timeout;
- 	// Read user's current theme
- 	cfg = new Cfg;
--	cfg->readConf(CFGFILE);
-+	char *cfgfile = getenv("SLIM_CFGFILE");
-+	if (!cfgfile) cfgfile = CFGFILE;
-+	cfg->readConf(cfgfile);
- 	cfg->readConf(SLIMLOCKCFG);
- 	string themebase = "";
- 	string themefile = "";
- 	string themedir = "";
- 	themeName = "";
--	themebase = string(THEMESDIR) + "/";
-+	char *themesdir = getenv("SLIM_THEMESDIR");
-+	if (!themesdir) themesdir = THEMESDIR;
-+	themebase = string(themesdir) + "/";
- 	themeName = cfg->getOption("current_theme");
- 	string::size_type pos;
- 	if ((pos = themeName.find(",")) != string::npos) {
diff --git a/pkgs/applications/display-managers/slim/sort-sessions.patch b/pkgs/applications/display-managers/slim/sort-sessions.patch
deleted file mode 100644
index cab5610f44fb6..0000000000000
--- a/pkgs/applications/display-managers/slim/sort-sessions.patch
+++ /dev/null
@@ -1,40 +0,0 @@
-diff -ru -x '*~' slim-1.3.6-orig/cfg.cpp slim-1.3.6/cfg.cpp
---- slim-1.3.6-orig/cfg.cpp	2013-10-02 00:38:05.000000000 +0200
-+++ slim-1.3.6/cfg.cpp	2016-01-30 10:35:51.108766802 +0100
-@@ -14,6 +14,7 @@
- #include <iostream>
- #include <unistd.h>
- #include <stdlib.h>
-+#include <algorithm>
- 
- #include <sys/types.h>
- #include <sys/stat.h>
-@@ -293,6 +294,8 @@
- 
- 	sessions.clear();
- 
-+        typedef pair<string,string> session_t;
-+
- 	if( !strSessionDir.empty() ) {
- 		DIR *pDir = opendir(strSessionDir.c_str());
- 
-@@ -325,7 +328,7 @@
-                                      }
-                              }
-                              desktop_file.close();
--                             pair<string,string> session(session_name,session_exec);
-+                             session_t session(session_name,session_exec);
-                              sessions.push_back(session);
-                              cout << session_exec << " - " << session_name << endl;
-                         }
-@@ -341,6 +344,10 @@
-         pair<string,string> session("","");
-         sessions.push_back(session);
- 	}
-+
-+        std::sort(sessions.begin(), sessions.end(), [](session_t& a, session_t& b) -> bool{
-+                return a.first < b.first;
-+        });
- }
- 
- pair<string,string> Cfg::nextSession() {
diff --git a/pkgs/applications/display-managers/slim/themes.nix b/pkgs/applications/display-managers/slim/themes.nix
deleted file mode 100644
index b1be24f3e1d6f..0000000000000
--- a/pkgs/applications/display-managers/slim/themes.nix
+++ /dev/null
@@ -1,183 +0,0 @@
-{ stdenv, fetchurl, slim }:
-
-# Inspired on aspell buildDict expression
-
-let
-  buildTheme =
-    {fullName, src, version ? "testing"}:
-
-    stdenv. mkDerivation rec {
-      name = "${fullName}-${version}";
-
-      inherit src;
-
-      buildInputs = [ slim ];
-
-      dontBuild = true;
-
-      installPhase = ''
-        install -dm755 $out/share/slim/themes/${name}
-        install -m644 * $out/share/slim/themes/${name}
-      '';
-
-      meta = {
-        description = "Slim theme for ${fullName}";
-        platforms = stdenv.lib.platforms.linux;
-      };
-    };
-
-in {
-
-  archlinuxSimple = buildTheme {
-    fullName = "archlinux-simple";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-archlinux-simple.tar.gz";
-      sha256 = "7d60d6782fa86302646fe67253467c04692d247f89bdbe87178f690f32b270db";
-    };
-  };
-
-  capernoited = buildTheme {
-    fullName = "capernoited";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-capernoited.tar.gz";
-      sha256 = "fb9163c6a2656d60f088dc4f2173aa7556a6794495122acfa7d3be7182f16b41";
-    };
-  };
-
-  debianMoreblue = buildTheme {
-    fullName = "debian-moreblue";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-debian-moreblue.tar.bz2";
-      sha256 = "5b76929827d4a4d604ddca4f42668cca3309b6f7bd659901021c6f49d6d2c481";
-    };
-  };
-
-  fingerprint = buildTheme {
-    fullName = "fingerprint";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-fingerprint.tar.gz";
-      sha256 = "48b703f84ce7b814cda0824f65cafebf695cd71a14166b481bb44616097d3144";
-    };
-  };
-
-  flat = buildTheme {
-    fullName = "flat";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-flat.tar.gz";
-      sha256 = "0092d531540f9da8ef07ad173e527c4ef9c088d04962d142be3c11f0c5c0c5e9";
-    };
-  };
-
-  flower2 = buildTheme {
-    fullName = "flower2";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-flower2.tar.gz";
-      sha256 = "840faf6459ffd6c2c363160c85cb98000717f9a425102976336f5d8f68ed95ee";
-    };
-  };
-
-  gentooSimple = buildTheme {
-    fullName = "gentoo-simple";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-gentoo-simple.tar.bz2";
-      sha256 = "27c8614cc930ca200acf81f1192febc102501744939d5cbe997141e37c96d8c2";
-    };
-  };
-
-  lake = buildTheme {
-    fullName = "lake";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-lake.tar.gz";
-      sha256 = "f7d662e37068a6c64cbf910adf3c192f1b50724baa427a8c9487cb9f7ed95851";
-    };
-  };
-
-  lunar = buildTheme {
-    fullName = "lunar-0.4";
-    version = "";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-lunar-0.4.tar.bz2";
-      sha256 = "1543eb45e4d664377e0dd4f7f954aba005823034ba9692624398b3d58be87d76";
-    };
-  };
-
-  mindlock = buildTheme {
-    fullName = "mindlock";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-mindlock.tar.gz";
-      sha256 = "99a6e6acd55bf55ece18a3f644299517b71c1adc49efd87ce2d7e654fb67033c";
-    };
-  };
-
-  parallelDimensions = buildTheme {
-    fullName = "parallel-dimensions";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-parallel-dimensions.tar.gz";
-      sha256 = "2b17c3e6d3967a6a0744e20e6e05c9d3938f4ef04c62d49ddbd416bc4743046f";
-    };
-  };
-
-  previous = buildTheme {
-    fullName = "previous";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-previous.tar.gz";
-      sha256 = "1f2a69f8fc0dc8ed8eb86a4c1d1087ba7be486973fb81efab52a63c661d726f8";
-    };
-  };
-
-  rainbow = buildTheme {
-    fullName = "rainbow";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-rainbow.tar.gz";
-      sha256 = "d83e3afdb05be50cff7da037bb31208b2c152539d1a009740b13857f5f910072";
-    };
-  };
-
-  rear-window = buildTheme {
-    fullName = "rear-window";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-rear-window.tar.gz";
-      sha256 = "0b123706ccb67e94f626c183530ec5732b209bab155bc661d6a3f5cd5ee39511";
-    };
-  };
-
-  scotlandRoad = buildTheme {
-    fullName = "scotland-road";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-scotland-road.tar.gz";
-      sha256 = "fd60a434496ed39b968ffa1e5457b36cd12f64a4e2ecedffc675f97ca3f3bba1";
-    };
-  };
-
-  subway = buildTheme {
-    fullName = "subway";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-subway.tar.gz";
-      sha256 = "0205568e3e157973b113a83b26d8829ce9962a85ef7eb8a33d3ae2f3f9292253";
-    };
-  };
-
-  wave = buildTheme {
-    fullName = "wave";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-wave.tar.gz";
-      sha256 = "be75676da5bf8670daa48379bb9cc1be0b9a5faa09adbea967dfd7125320b959";
-    };
-  };
-
-  zenwalk = buildTheme {
-    fullName = "zenwalk";
-    src = fetchurl {
-      url = "mirror://sourceforge/slim.berlios/slim-zenwalk.tar.gz";
-      sha256 = "f0f41d17ea505b0aa96a036e978fabaf673a51d3f81a919cb0d43364d4bc7a57";
-    };
-  };
-
-  nixosSlim = buildTheme {
-    fullName = "nixos-slim";
-    src = fetchurl {
-      url = "https://github.com/jagajaga/nixos-slim-theme/archive/2.0.tar.gz";
-      sha256 = "0lldizhigx7bjhxkipii87y432hlf5wdvamnfxrryf9z7zkfypc8";
-    };
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 262304cdbf0cc..99d412da8c170 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -351,6 +351,8 @@ mapAliases ({
   slurm-llnl-full = slurm-full; # renamed July 2017
   slurm-full = slurm; # added 2018-05-1
   smbclient = samba; # added 2018-04-25
+  slim = throw "slim has been removed. Please use a different display-manager"; # added 2019-11-11
+  slimThemes = throw "slimThemes has been removed because slim has been also"; # added 2019-11-11
   spaceOrbit = space-orbit; # addewd 2016-05-23
   speech_tools = speech-tools; # added 2018-04-25
   speedtest_cli = speedtest-cli;  # added 2015-02-17
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 37ee1237d581d..36599a6722a14 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21068,16 +21068,10 @@ in
 
   skrooge = libsForQt5.callPackage ../applications/office/skrooge {};
 
-  slim = callPackage ../applications/display-managers/slim {
-    libpng = libpng12;
-  };
-
   smartgithg = callPackage ../applications/version-management/smartgithg {
     jre = openjdk11;
   };
 
-  slimThemes = recurseIntoAttrs (callPackage ../applications/display-managers/slim/themes.nix {});
-
   smartdeblur = callPackage ../applications/graphics/smartdeblur { };
 
   snapper = callPackage ../tools/misc/snapper { };