From 7853b4870f22b764029164454ea105e8d76c2c2d Mon Sep 17 00:00:00 2001
From: Frantisek Bohacek <rutherther@proton.me>
Date: Wed, 31 Jul 2024 11:33:05 +0200
Subject: [PATCH] feat: use desktopSessions options instead of custom .sessions
 folder

---
 home/modules/default.nix                      |  2 +
 home/modules/profiles/desktop/default.nix     | 61 +------------------
 home/modules/profiles/desktop/dwl/default.nix | 26 +++++++-
 nixos/hosts/laptop-phobos/home.nix            | 22 ++++---
 4 files changed, 41 insertions(+), 70 deletions(-)

diff --git a/home/modules/default.nix b/home/modules/default.nix
index 6116e7f..ea5821c 100644
--- a/home/modules/default.nix
+++ b/home/modules/default.nix
@@ -4,5 +4,7 @@
     ./profiles/default.nix
     ./programs/default.nix
     ./themes.nix
+    ./sessions
+    ./sessions/default-hm-impl.nix
   ];
 }
diff --git a/home/modules/profiles/desktop/default.nix b/home/modules/profiles/desktop/default.nix
index 04c2d39..e554643 100644
--- a/home/modules/profiles/desktop/default.nix
+++ b/home/modules/profiles/desktop/default.nix
@@ -14,65 +14,6 @@
   };
 
   config = lib.mkIf config.profiles.desktop.enable {
-    home.file.".start-session".source = pkgs.writeShellScript "start-session" ''
-      sessions=($(ls ~/.sessions))
-      session_indices=(''${!sessions[@]})
-
-      timeout=3
-      selected="start-dwl" # default
-
-      echo "Default session to start is $selected"
-
-      echo "Available sessions:"
-      for i in ''${!sessions[@]}; do
-          echo "  $((i+1))) ''${sessions[$i]}"
-      done
-      echo "  q) Enter tty."
-
-      echo -n "Choose session to start: "
-      read -t"$timeout" -n1 user_input
-      echo
-
-      if [[ $user_input == "q" ]]; then
-          exit
-      elif [[ $user_input ]]; then
-          user_input=$((user_input-1))
-          echo $user_input
-          echo ''${session_indices[@]}
-          if [[ " ''${session_indices[@]} " =~ " $user_input " ]]; then
-              selected="''${sessions[$user_input]}"
-              echo "Got $user_input. Going to start $selected"
-          else
-              echo "Got unknown option. Exiting."
-              exit
-          fi
-      else
-          echo "Got no input, starting $selected"
-      fi
-
-      echo "Going to start $selected"
-
-      exec "~/.sessions/$selected"
-
-    '';
-
-    programs = {
-      bash = {
-        enable = true;
-        profileExtra =  ''
-          if [[ "$(tty)" == "/dev/tty1" && "$(id -u)" != 0 ]]; then
-            ~/.start-session
-          fi
-        '';
-      };
-      zsh = {
-        enable = true;
-        profileExtra = ''
-          if [[ "$(tty)" == "/dev/tty1" && "$(id -u)" != 0 ]]; then
-            ~/.start-session
-          fi
-        '';
-      };
-    };
+    desktopSessions.enable = true;
   };
 }
diff --git a/home/modules/profiles/desktop/dwl/default.nix b/home/modules/profiles/desktop/dwl/default.nix
index c272185..a344b4d 100644
--- a/home/modules/profiles/desktop/dwl/default.nix
+++ b/home/modules/profiles/desktop/dwl/default.nix
@@ -19,6 +19,8 @@ let
   wlopmDisableScreens = wlopmScreens "off";
   wlopmEnableScreens = wlopmScreens "on";
 
+  dwl = inputs.self.packages.${pkgs.system}.dwl;
+
   emacs-anywhere = pkgs.writeShellScriptBin "emacs-anywhere" ''
     emacs --batch --script "${./emacs-anywhere.el}" | wl-copy
   '';
@@ -35,6 +37,28 @@ in {
   };
 
   config = lib.mkIf config.profiles.desktop.dwl.enable {
+    desktopSessions.instances.dwl = let
+      dwlInternal = pkgs.writeShellScript "dwl-s" ''
+        exec <&-
+        dbus-update-activation-environment --systemd WAYLAND_DISPLAY XDG_CURRENT_DESKTOP DISPLAY
+        systemctl start --user wlr-session.target
+      '';
+    in {
+      environment = {
+        XDG_CURRENT_DESKTOP = "wlroots";
+        XDG_BACKEND = "wayland";
+        QT_QPA_PLATFORM = "wayland";
+        MOZ_ENABLE_WAYLAND = "1";
+        _JAVA_AWT_WM_NONREPARENTING = "1";
+      };
+
+      executable = lib.getExe dwl;
+      arguments = [
+        "-s"
+        "${dwlInternal}"
+      ];
+    };
+
     profiles.desktop.enable = true;
     systemd.user.targets.wlr-session = {
       Unit = {
@@ -105,7 +129,7 @@ in {
 
       emacs-anywhere
 
-      inputs.self.packages.${pkgs.system}.dwl
+      dwl
     ];
 
     programs = {
diff --git a/nixos/hosts/laptop-phobos/home.nix b/nixos/hosts/laptop-phobos/home.nix
index a66e66b..4933fc5 100644
--- a/nixos/hosts/laptop-phobos/home.nix
+++ b/nixos/hosts/laptop-phobos/home.nix
@@ -5,22 +5,26 @@ let
   #   if etc-file.text != null then
   #     etc-file.text else
   #     (builtins.readFile etc-file.source);
-  readEtcFile = etc-file: lib.mkMerge [
-    (lib.mkIf (etc-file.text != null) etc-file.text)
-    (lib.mkIf (etc-file.source != null) (builtins.readFile etc-file.source))
-  ];
+  # NO IFDs, future me!!!!
+  # readEtcFile = etc-file: lib.mkMerge [
+  #   (lib.mkIf (etc-file.text != null) etc-file.text)
+  #   (lib.mkIf (etc-file.source != null) (builtins.readFile etc-file.source))
+  # ];
 in {
   profiles.development.enable = true;
   profiles.desktop.dwl.enable = true;
   profiles.matrix.enable = true;
 
+  desktopSessions.defaultSession = "dwl";
+
   # Don't Starve doesn't pick up /etc/alsa/conf.d.
   # ALSA lib conf.c:4136:(config_file_load) cannot stat file/directory /etc/alsa/conf.d
   # This is a workaround that puts the stuff from /etc/alsa/conf.d into ~/.asoundrc that
   # Don't starve is able to read.
-  home.file.".asoundrc".text = lib.mkMerge [
-    (readEtcFile osConfig.environment.etc."alsa/conf.d/49-pipewire-modules.conf")
-    (readEtcFile osConfig.environment.etc."alsa/conf.d/50-pipewire.conf")
-    (readEtcFile osConfig.environment.etc."alsa/conf.d/99-pipewire-default.conf")
-  ];
+  # home.file.".asoundrc".text = lib.mkMerge [
+    # TODO: get rid of the ifd before commenting this out!
+    # (readEtcFile osConfig.environment.etc."alsa/conf.d/49-pipewire-modules.conf")
+    # (readEtcFile osConfig.environment.etc."alsa/conf.d/50-pipewire.conf")
+    # (readEtcFile osConfig.environment.etc."alsa/conf.d/99-pipewire-default.conf")
+  # ];
 }
-- 
2.48.1