spacefm: sudo and gksu fixes #15758 and license update

nixos/modules/module-list.nix

···
   ./programs/screen.nix
   ./programs/shadow.nix
   ./programs/shell.nix
+  ./programs/spacefm.nix
   ./programs/ssh.nix
   ./programs/ssmtp.nix
   ./programs/tmux.nix

nixos/modules/programs/spacefm.nix

···
+# Global configuration for spacefm.
+
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let cfg = config.programs.spacefm;
+
+in
+{
+  ###### interface
+
+  options = {
+
+    programs.spacefm = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to install SpaceFM and create <filename>/etc/spacefm/spacefm.conf<filename>.
+        '';
+      };
+
+      settings = mkOption {
+        type = types.attrs;
+        default = {
+          tmp_dir = "/tmp";
+          terminal_su = "${pkgs.sudo}/bin/sudo";
+          graphical_su = "${pkgs.gksu}/bin/gksu";
+        };
+        example = literalExample ''{
+          tmp_dir = "/tmp";
+          terminal_su = "''${pkgs.sudo}/bin/sudo";
+          graphical_su = "''${pkgs.gksu}/bin/gksu";
+        }'';
+        description = ''
+          The system-wide spacefm configuration.
+          Parameters to be written to <filename>/etc/spacefm/spacefm.conf</filename>.
+          Refer to the <link xlink:href="https://ignorantguru.github.io/spacefm/spacefm-manual-en.html#programfiles-etc">relevant entry</link> in the SpaceFM manual.
+        '';
+      };
+
+    };
+  };
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.spaceFM ];
+
+    environment.etc."spacefm/spacefm.conf".text =
+      concatStrings (mapAttrsToList (n: v: "${n}=${toString v}\n") cfg.settings);
+  };
+}

pkgs/applications/misc/spacefm/default.nix

···
-{ pkgs, fetchFromGitHub, stdenv, gtk3, udev, desktop_file_utils, shared_mime_info
-, intltool, pkgconfig, wrapGAppsHook, ffmpegthumbnailer, jmtpfs, ifuse, lsof, udisks
-, hicolor_icon_theme, adwaita-icon-theme }:
+{ pkgs, fetchFromGitHub, stdenv, gtk3, udev, desktop_file_utils
+, shared_mime_info, intltool, pkgconfig, wrapGAppsHook, ffmpegthumbnailer
+, jmtpfs, ifuse, lsof, udisks, hicolor_icon_theme, adwaita-icon-theme }:
 
 stdenv.mkDerivation rec {
   name = "spacefm-${version}";
···
 
   configureFlags = [
     "--with-bash-path=${pkgs.bash}/bin/bash"
-    "--with-preferable-sudo=${pkgs.sudo}/bin/sudo"
   ];
 
   preConfigure = ''
     configureFlags="$configureFlags --sysconfdir=$out/etc"
   '';
 
-  buildInputs = [ gtk3 udev desktop_file_utils shared_mime_info intltool pkgconfig wrapGAppsHook ffmpegthumbnailer jmtpfs ifuse lsof udisks ];
+  postInstall = ''
+    rm -f $out/etc/spacefm/spacefm.conf
+    ln -s /etc/spacefm/spacefm.conf $out/etc/spacefm/spacefm.conf 
+  '';
+
+  buildInputs = [
+    gtk3 udev desktop_file_utils shared_mime_info intltool pkgconfig
+    wrapGAppsHook ffmpegthumbnailer jmtpfs ifuse lsof udisks
+  ];
 
   meta = with stdenv.lib;  {
     description = "A multi-panel tabbed file manager";
···
     '';
     homepage = http://ignorantguru.github.io/spacefm/;
     platforms = platforms.linux;
-    license = licenses.gpl3;
+    license = licenses.gpl3Plus;
     maintainers = with maintainers; [ jagajaga obadz ];
   };
 }