emacs: Install modus-themes via Nix

For some weird reason the theme broke. I suspect it is the latest cl-lib
removal, and Nixpkgs is probably not updated with it just yet. So, at
least it is working via Nix for now. Welcome to Emacs, cheers.

flake.lock

@@ -108,11 +108,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1699783872,
-        "narHash": "sha256-4zTwLT2LL45Nmo6iwKB3ls3hWodVP9DiSWxki/oewWE=",
+        "lastModified": 1700118404,
+        "narHash": "sha256-XkqpZpVoy1FV7UbiLkP+fQxxv/6KnwLYkFEHgE8z2IQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "280721186ab75a76537713ec310306f0eba3e407",
+        "rev": "c1a033122df8a3c74fda3780c83a104a7d60873c",
         "type": "github"
       },
       "original": {
@@ -123,11 +123,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1699954245,
-        "narHash": "sha256-CSnfeOHc/wco8amdA0j268OaLrMcI5gGtK6Zm+y3lT0=",
+        "lastModified": 1699997707,
+        "narHash": "sha256-ugb+1TGoOqqiy3axyEZpfF6T4DQUGjfWZ3Htry1EfvI=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "df9bb8a436607da124e8cfa0fd19e70e9d9e0b7b",
+        "rev": "5689f3ebf899f644a1aabe8774d4f37eb2f6c2f9",
         "type": "github"
       },
       "original": {
@@ -171,11 +171,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1699781429,
-        "narHash": "sha256-UYefjidASiLORAjIvVsUHG6WBtRhM67kTjEY4XfZOFs=",
+        "lastModified": 1699963925,
+        "narHash": "sha256-LE7OV/SwkIBsCpAlIPiFhch/J+jBDGEZjNfdnzCnCrY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "e44462d6021bfe23dfb24b775cc7c390844f773d",
+        "rev": "bf744fe90419885eefced41b3e5ae442d732712d",
         "type": "github"
       },
       "original": {

modules/emacs/doom/config.org

@@ -137,7 +137,7 @@ Tangle ~packages.el~ from within org-mode.
 
 (package! org-wild-notifier)
 
-(package! modus-themes)
+(package! modus-themes :type 'built-in :built-in 'prefer)
 
 (package! eglot :type 'built-in :built-in 'prefer)
 

modules/emacs/emacs.nix

@@ -49,6 +49,7 @@ in
         vterm
         all-the-icons
         treesit-grammars.with-all-grammars
+        modus-themes
       ];
     };
   };