feat(gs/home): Bump alacritty version

Bump to alacritty 0.5.0 (which is happening by fetching YANNPP (Yet
Another Nixpkgs Pin) because overriding versions of rust packages is not
very well supported) and update the relevant home-manager version and
pin to get it installed and configured with vi-mode.

Change-Id: I4fd96bd0c0611ce76500c33bf0b2c680ee7f44c3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1583
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>

users/glittershark/system/home/modules/alacritty.nix

@@ -1,17 +1,36 @@
 { config, lib, pkgs, ... }:
-{
-  home.packages = with pkgs; [
-    alacritty 
-  ];
 
+let
+
+  # TODO(grfn): Find a way to extract this to third_party without too much
+  # effort
+  alacrittyNixpkgs = import (pkgs.fetchFromGitHub {
+    owner = "NixOS";
+    repo = "nixpkgs";
+    rev = "cd9286194a5597e28b8bfb747418dd6af1567eb3";
+    sha256 = "0rwhq7cy4xy25gg2in6vah55psdizz7r187zy7z4c2a7pj2hs7ak";
+  }) {};
+
+in
+
+{
   programs.alacritty = {
     enable = true;
+    package = alacrittyNixpkgs.alacritty;
     settings = {
       font.size = 6;
       font.normal.family = "Meslo LGSDZ Nerd Font";
 
       draw_bold_text_with_bright_colors = false;
 
+      key_bindings = [
+        {
+          key = "Escape";
+          mods = "Control";
+          action = "ToggleViMode";
+        }
+      ];
+
       colors = with import ../common/solarized.nix; rec {
         # Default colors
         primary = {
@@ -43,6 +62,8 @@
           cyan = base1;
           white = base3;
         };
+
+        vi_mode_cursor.cursor = red;
       };
     };
   };

users/glittershark/system/home/modules/development.nix

@@ -55,6 +55,8 @@ with lib;
     hyperfine
 
     clj2nix
+    clojure
+    leiningen
 
     pg-dump-upsert
 
@@ -82,11 +84,11 @@ with lib;
 
     delta = {
       enable = true;
-      options = [
-        "--theme 'Solarized (light)'"
-        "--hunk-style" "plain"
-        "--commit-style" "box"
-      ];
+      options = {
+        theme = "Solarized (light)";
+        hunk-style = "plain";
+        commit-style = "box";
+      };
     };
   };