Figure out how to not use nixGL for alacritty

alacritty/default.nix

@@ -38,12 +38,24 @@
       (builtins.readFile ./alacritty.yml)
     );
 
+  shellEntrypoint = pkgs.writeShellScript "alacritty-shell-entrypoint" ''
+    unset LD_LIBRARY_PATH
+    unset __EGL_VENDOR_LIBRARY_DIRS
+    exec "${zsh}/bin/zsh" "$@"
+  '';
+
   alacritty = pkgs.writeScriptBin "alacritty" ''
     #!${pkgs.bash}/bin/bash
 
-    exec ${pkgs.nixgl}/bin/nixGL ${pkgs.alacritty}/bin/alacritty \
+    # TODO this might break things, especially if the machine is not using
+    # nvidia, but more investigation is needed. But it at least lets us get rid
+    # of nixGL.
+    export LD_LIBRARY_PATH=/usr/lib
+    export __EGL_VENDOR_LIBRARY_DIRS=/usr/share/glvnd/egl_vendor.d
+
+    exec ${pkgs.alacritty}/bin/alacritty \
       -o font.size=${builtins.toString config.alacritty.fontSize} \
       --config-file ${configFile} \
-      -e "${zsh}/bin/zsh"
+      -e "${shellEntrypoint}"
   '';
 }

config/default.nix

@@ -26,4 +26,6 @@
   };
 
   binExtra = [];
+
+  xorgConfExtra = "";
 }

default.nix

@@ -87,6 +87,8 @@ in rec {
       pkgs.tomb
       pkgs.udiskie
 
+      pkgs.xterm # nice to have a backup
+
       ((import ./nvim) {}).nvim
       zsh
       ((import ./alacritty) { inherit config zsh; }).alacritty

x/default.nix

@@ -11,7 +11,6 @@
       pkgs.xorg.xinit
       pkgs.xorg.xauth
       pkgs.xorg.xset
-      #pkgs.xorg.xf86inputevdev
       pkgs.xorg.xf86inputlibinput
 
       (pkgs.runCommand "xorg-conf-inner" {} ''
@@ -26,11 +25,14 @@
 Section "Files"
     ModulePath "${innerEnv}/lib/xorg/modules"
 EndSection
+
+${config.xorgConfExtra}
 EOF
 
     for f in $(ls ${innerEnv}/share/X11/xorg.conf.d | sort); do
       cat ${innerEnv}/share/X11/xorg.conf.d/"$f" >> "$out"
     done
+
   '';
 
   startx = pkgs.writeShellScriptBin "startx" ''