configs: remove alacritty and fix smug eval issue

Both smug and alacritty configs were causing an eval issue with `nix flake check
--no-build`.

To fix we basically just remove alacritty and the etc entry for smug
stuff (which isn't used anyway).

configs/alacritty.nix

@@ -1,30 +0,0 @@
-{ pkgs, ... }:
-let
-  settings = {
-    font = {
-      normal = {
-        family = "Go Mono";
-      };
-      size = 6;
-    };
-
-    colors = {
-      primary = {
-        background = "#ffffea";
-        foreground = "#000000";
-      };
-    };
-  };
-  settingsFormat = pkgs.formats.toml { };
-  settingsFile = settingsFormat.generate "alacritty.toml" settings;
-in
-{
-  config = {
-    environment = {
-      etc = {
-        "xdg/alacritty/alacritty.toml".text = builtins.readFile settingsFile;
-      };
-    };
-    fonts = { packages = with pkgs; [ go-font ]; };
-  };
-}

configs/default.nix

@@ -1,6 +1,5 @@
 { ... }: {
   imports = [
-    ./alacritty.nix
     ./ca.nix
     ./ci.nix
     ./colemak.nix

configs/smug.nix

@@ -4,15 +4,18 @@ let
   tmuxFormat = pkgs.formats.yaml { };
   mkSmugEntry = name: cfg:
     {
-      environment = {
-        systemPackages = [
-          (pkgs.writeScriptBin name ''
-            ${pkgs.smug}/bin/smug -f /etc/smug/${name}.yml start
-          '')
-        ];
-        etc."smug/${name}.yml".text = builtins.readFile
-          (tmuxFormat.generate "${name}.yml" cfg);
-      };
+      environment =
+        let
+          yamlFile = tmuxFormat.generate "${name}.yml" cfg;
+          startScript = pkgs.writeScriptBin name ''
+            ${pkgs.smug}/bin/smug -f ${yamlFile} start
+          '';
+        in
+        {
+          systemPackages = [
+            startScript
+          ];
+        };
     };
 in
 {