[Neovim] Remove copilot LSP.

home-manager/features/hypr/hyprland.nix

@@ -111,6 +111,10 @@
     export HYPRCURSOR_SIZE="32"
     export HYPRCURSOR_THEME="phinger"
 
+    # Point SSH (and anything else that uses the ssh-agent protocol) at
+    # gnome-keyring's ssh-agent component instead of spawning a separate agent.
+    export SSH_AUTH_SOCK="$XDG_RUNTIME_DIR/keyring/ssh"
+
     # Nvidia config
     export LIBVA_DRIVER_NAME="nvidia"
     export __GLX_VENDOR_LIBRARY_NAME="nvidia"

home-manager/features/linux-desktop.nix

@@ -1,5 +1,6 @@
 {
   config,
+  lib,
   pkgs,
   ...
 }:
@@ -69,6 +70,17 @@ in
     chromium.enable = true;
   };
 
+  services = {
+    # Secret management: unlocks on login (see security.pam.*.enableGnomeKeyring at
+    # the system level) and provides the org.freedesktop.secrets D-Bus API plus an
+    # ssh-agent component.
+    gnome-keyring.enable = true;
+
+    # gnome-keyring's ssh-agent could be used in place of the plain one.
+    # Un-comment this if I'd rather use the system keyring instead of the ssh-agent.
+    # ssh-agent.enable = lib.mkForce false;
+  };
+
   # GTK settings
   gtk = {
     enable = true;

home-manager/features/neovim/config/lua/plugins/lsp.lua

@@ -16,10 +16,6 @@ return {
         vtsls = {},
         -- Haskell
         hls = {},
-        -- Copilot
-        copilot = {
-          enabled = true,
-        },
       },
       codelens = {
         enable = true,