Rework how X session is started

hm/desktop.nix

@@ -1,20 +1,35 @@
 { pkgs, config, lib, ... }:
+let
+  nixgl = import
+    (builtins.fetchGit {
+      url = "https://github.com/nix-community/nixGL";
+      rev = "489d6b095ab9d289fe11af0219a9ff00fe87c7c5";
+    })
+    { };
+  nixGLIntelPrefix = "${nixgl.nixVulkanIntel}/bin/nixVulkanIntel ${nixgl.nixGLIntel}/bin/nixGLIntel ";
+  wmPrefix = "${lib.optionalString config.frogeye.desktop.nixGLIntel nixGLIntelPrefix}";
+in
 {
+  imports = [
+    ./frobar
+  ];
   config = lib.mkIf config.frogeye.desktop.xorg {
     frogeye.shellAliases = {
       noise = ''${pkgs.sox}/bin/play -c 2 -n synth $'' + ''{1}noise'';
       beep = ''${pkgs.sox}/bin/play -n synth sine E5 sine A4 remix 1-2 fade 0.5 1.2 0.5 2> /dev/null'';
 
       # n = "$HOME/.config/i3/terminal & disown"; # Not used anymore since alacritty daemon mode doesn't preserve environment variables
-      x = "startx ${config.xdg.configHome}/xinitrc; logout";
+      x = "startx ${config.home.homeDirectory}/${config.xsession.scriptPath}; logout";
-      nx = "nvidia-xrun ${config.xdg.configHome}/xinitrc; sudo systemctl start nvidia-xrun-pm; logout";
+      # TODO Is it possible to not start nvidia stuff on nixOS?
-      # Was also thinking of not storing the config in .config and use nix-store instead,
+      # nx = "nvidia-xrun ${config.xsession.scriptPath}; sudo systemctl start nvidia-xrun-pm; logout";
-      # but maybe it's a bad idea as home-manager switch doesn't replace aliases in running shells
-      # FIXME Is it still relevant with NixOS?
     };
     xsession = {
       enable = true;
+      # Not using config.xdg.configHome because it needs to be $HOME-relative paths and path manipulation is hard
+      scriptPath = ".config/xsession";
+      profilePath = ".config/xprofile";
       windowManager = {
+        command = lib.mkForce "${wmPrefix} ${config.xsession.windowManager.i3.package}/bin/i3";
         i3 = {
           enable = true;
           config =
@@ -68,7 +83,6 @@
             {
               modifier = "Mod4";
               terminal = "alacritty";
-              bars = [ ]; # Using frobar
               colors = let ignore = "#ff00ff"; in
                 with config.lib.stylix.colors.withHashtag; lib.mkForce {
                   focused = { border = base0B; background = base0B; text = base00; indicator = base00; childBorder = base0B; };
@@ -310,7 +324,6 @@
                 ];
               };
               startup = [
-                { notification = false; command = "${pkgs.autorandr}/bin/autorandr --change"; }
                 # Lock screen after 10 minutes
                 { notification = false; command = "${pkgs.xautolock}/bin/xautolock -time 10 -locker '${pkgs.xorg.xset}/bin/xset dpms force standby' -killtime 1 -killer ${locker}"; }
                 {
@@ -498,13 +511,8 @@
       };
       autorandr = {
         enable = true;
-        hooks.postswitch =
+        hooks.postswitch = {
-          let
+            background = "${pkgs.feh}/bin/feh --no-fehbg --bg-fill ${config.stylix.image}";
-            frobar = (pkgs.callPackage (import ./frobar) { });
-          in
-          {
-            "background" = "${pkgs.feh}/bin/feh --no-fehbg --bg-fill ${config.stylix.image}";
-            "frobar" = "${pkgs.i3}/bin/i3-msg exec ${frobar}/bin/frobar_launcher";
         };
       };
       mpv = {
@@ -553,23 +561,6 @@
         "pulse/client.conf" = {
           text = ''cookie-file = .config/pulse/pulse-cookie'';
         };
-        "xinitrc" =
-          let
-            nixgl = import
-              (builtins.fetchGit {
-                url = "https://github.com/nix-community/nixGL";
-                rev = "489d6b095ab9d289fe11af0219a9ff00fe87c7c5";
-              })
-              { };
-            nixGLIntelPrefix = "${nixgl.nixVulkanIntel}/bin/nixVulkanIntel ${nixgl.nixGLIntel}/bin/nixGLIntel ";
-            wmPrefix = "${lib.optionalString config.frogeye.desktop.nixGLIntel nixGLIntelPrefix}";
-          in
-          {
-            source = pkgs.writeShellScript "xinitrc" ''
-              ${pkgs.xorg.xrdb}/bin/xrdb ${config.xresources.path}
-              ${wmPrefix}${config.xsession.windowManager.command}
-            '';
-          };
         "rofimoji.rc" = {
           text = ''
             skin-tone = neutral
@@ -593,7 +584,6 @@
     };
     services = {
       unclutter.enable = true;
-      # FIXME Not starting on curacao_test
       dunst =
         {
           enable = true;

hm/frobar/default.nix

@@ -1,4 +1,4 @@
-{ pkgs ? import <nixpkgs> { config = { }; overlays = [ ]; } }:
+{ pkgs ? import <nixpkgs> { config = { }; overlays = [ ]; }, ... }:
 # Tried using pyproject.nix but mpd2 dependency wouldn't resolve,
 # is called pyton-mpd2 on PyPi but mpd2 in nixpkgs.
 let
@@ -6,6 +6,7 @@ let
     pname = "frobar";
     version = "2.0";
 
+    runtimeInputs = with pkgs; [ lemonbar-xft wirelesstools ];
     propagatedBuildInputs = with pkgs.python3Packages; [
       coloredlogs
       notmuch
@@ -15,21 +16,33 @@ let
       pulsectl
       pyinotify
     ];
+    makeWrapperArgs = [ "--prefix PATH : ${pkgs.lib.makeBinPath (with pkgs; [ lemonbar-xft wirelesstools ])}" ];
 
     src = ./.;
   };
-  frobar_launcher = pkgs.writeShellApplication
-    {
-      name = "frobar_launcher";
-      runtimeInputs = with pkgs; [ lemonbar-xft wirelesstools ];
-      text = ''
-        pidfile=$XDG_RUNTIME_DIR/frobar/$DISPLAY.pid
-        ${pkgs.coreutils}/bin/mkdir -p "$(${pkgs.coreutils}/bin/dirname "$pidfile")"
-        ([ -f "$pidfile" ] && ${pkgs.procps}/bin/kill "$(<"$pidfile")") || true
-        ${frobar}/bin/frobar & disown
-        echo $! > "$pidfile"
-      '';
-    };
 in
-frobar_launcher
+{
-# TODO Connection with i3 is lost sometimes, more often than with Arch?
+  config = {
+    xsession.windowManager.i3.config.bars = [ ];
+    programs.autorandr.hooks.postswitch = {
+      frobar = "${pkgs.systemd}/bin/systemctl --user restart frobar";
+    };
+    systemd.user.services.frobar = {
+      Unit = {
+        Description = "frobar";
+        After = [ "graphical-session-pre.target" ];
+        PartOf = [ "graphical-session.target" ];
+      };
+
+      Service = {
+        # Wait for i3 to start. Can't use ExecStartPre because otherwise it blocks graphical-session.target, and there's nothing i3/systemd
+        # TODO Do that better
+        ExecStart = ''${pkgs.bash}/bin/bash -c "while ! ${pkgs.i3}/bin/i3-msg; do ${pkgs.coreutils}/bin/sleep 1; done; ${frobar}/bin/frobar"''; 
+      };
+
+      Install = { WantedBy = [ "graphical-session.target" ]; };
+    };
+  };
+}
+# TODO Connection with i3 is lost on start sometimes, more often than with Arch?
+# TODO Restore ability to build frobar with nix-build