diff --git a/hosts/sydpc/configuration.nix b/hosts/sydpc/configuration.nix
index 702d37b..ceaa5b6 100644
--- a/hosts/sydpc/configuration.nix
+++ b/hosts/sydpc/configuration.nix
@@ -29,6 +29,7 @@
 
     users.users = [
       "crumb"
+      "msyds"
     ];
 
     impermanence = {
diff --git a/modules/home/emacs.nix b/modules/home/emacs.nix
new file mode 100644
index 0000000..bb15252
--- /dev/null
+++ b/modules/home/emacs.nix
@@ -0,0 +1,141 @@
+{ config, lib, pkgs, inputs, ... }@args:
+
+let cfg = config.sydnix.emacs;
+in {
+  options.sydnix.emacs = {
+    enable = lib.mkEnableOption "Emacs";
+    userDir = lib.mkOption {
+      description = ''
+        The path to the Emacs user directory.
+      '';
+      default = "/persist/dots/modules/home/users/msyds/emacs";
+      type = lib.types.path;
+    };
+    package = lib.mkPackageOption pkgs "emacs" {
+      default = [ "emacs-pgtk" ];
+    };
+    emacsPackages = lib.mkOption {
+      description = ''
+        Emacs packages to be installed.  Used primarily for Elisp packages with
+        system dependencies.
+      '';
+      default = _epkgs: [];
+      type = lib.types.anything // {
+        merge =
+          _loc: defs: epkgs: lib.concatMap (f: f epkgs) (lib.getValues defs);
+        check = lib.isFunction;
+      };
+    };
+    fontPackages = lib.mkOption {
+      description = ''
+        Font packages to be made available to Emacs.
+      '';
+      type = lib.types.listOf lib.types.package;
+      default = [];
+    };
+    files = [
+    ];
+    tex = {
+      enable = lib.mkEnableOption "TexLive";
+      extraTexPackages = lib.mkOption {
+        description = ''
+          TexLive package to be made available.
+        '';
+        default = {};
+        type = lib.types.attrsOf lib.types.package;
+      };
+    };
+    extraWrapProgramArgs = lib.mkOption {
+      description = ''
+        Extra arguments to pass to the final wrapProgram call.
+      '';
+      default = [];
+      type = lib.types.listOf lib.types.str;
+      apply = lib.escapeShellArgs;
+    };
+  };
+
+  config = lib.mkIf cfg.enable
+    (let
+      emacsDataDir = "${config.xdg.dataHome}/emacs";
+      emacsCacheDir = "${config.xdg.cacheHome}/emacs";
+
+      warnings =
+        if config.fonts.fontconfig.enable
+        then []
+        else [''This Emacs config will have font issues if
+                fonts.fontconfig.enable is not enabled.''];
+
+      essentialTexPackages = {
+        inherit (pkgs.texlive)
+          scheme-basic # Set of common packages.
+          fontspec
+          dvisvgm dvipng wrapfig # For Org-mode previews/export.
+          amsmath # Essential for mathematics.
+          ulem hyperref
+          capt-of
+          pgf # Includes TikZ.
+          tikz-cd # Commutative diagrams w/ TikZ.
+          quiver # Commutative diagrams w/ TikZ & q.uiver.app.
+          metafont
+          preview # For new-gen org-latex-preview.
+          mylatexformat # For new-gen org-latex-preview.
+          collection-fontsrecommended # Essential fonts.
+          etoolbox # For Org-mode exports.
+          ;
+      };
+
+      my-texlive = pkgs.texlive.combine
+        (essentialTexPackages ++ cfg.tex.extraTexPackages);
+
+      emacs-final =
+        let ewp = (pkgs.emacsPackagesFor cfg.package).emacsWithPackages
+                    cfg.emacsPackages;
+        in pkgs.symlinkJoin {
+          name = "sydmacs";
+          paths = [ ewp ];
+          nativeBuildInputs = [
+            pkgs.makeWrapper
+          ];
+          postBuild = ''
+            # Read all emacs binaries into a Bash array.
+            readarray -d "" emacsen \
+             < <(find "$out/bin" \( -name emacs -or -name 'emacs-*' \) -print0)
+
+            for emacs in "''${emacsen[@]}"; do
+              wrapProgram "$emacs" \
+                --add-flags "--init-directory \"${cfg.userDir}\"" \
+                ${cfg.extraWrapProgramArgs}
+            done
+          '';
+          meta = cfg.package.meta;
+          version = cfg.package.version;
+        };
+    in {
+      programs.emacs = {
+        enable = true;
+        package = emacs-final;
+      };
+
+      sydnix.impermanence.cache.directories = [
+        # Impermanence expects the path to be relative to ~.
+        (lib.removePrefix "${config.home.homeDirectory}/" emacsCacheDir)
+      ];
+
+      sydnix.impermanence.directories = [
+        # Impermanence expects the path to be relative to ~.
+        (lib.removePrefix "${config.home.homeDirectory}/" emacsDataDir)
+      ];
+
+      home.packages = cfg.fontPackages;
+
+      services.emacs = {
+        enable = true;
+        # Generate a desktop entry for emacsclient.
+        client.enable = true;
+      };
+
+      # We do this ourselves.
+      stylix.targets.emacs.enable = false;
+    });
+}
diff --git a/modules/home/users/msyds/emacs.nix b/modules/home/users/msyds/emacs.nix
new file mode 100644
index 0000000..fd9f6f4
--- /dev/null
+++ b/modules/home/users/msyds/emacs.nix
@@ -0,0 +1,24 @@
+{ config, lib, pkgs, inputs, ... }@args:
+
+let cfg = config.sydnix.users.msyds.emacs;
+in {
+  options.sydnix.users.msyds.emacs = {
+    enable = lib.mkEnableOption ''Emacs, à la msyds'';
+    userDir = lib.mkOption {
+      description = ''
+        The path to the Emacs user directory.
+      '';
+      default = "/persist/dots/modules/home/users/msyds/emacs";
+      type = lib.types.path;
+    };
+    package = lib.mkPackageOption pkgs "emacs" {
+      default = [ "emacs-pgtk" ];
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    sydnix.emacs = {
+      enable = true;
+    };
+  };
+}
diff --git a/users/msyds/default.nix b/users/msyds/default.nix
old mode 100755
new mode 100644
index 63f1ada..f415ca7
--- a/users/msyds/default.nix
+++ b/users/msyds/default.nix
@@ -1,70 +1,45 @@
 {
   systemConfiguration = { config, ... }: {
     isNormalUser = true;
-
-    # Unfortunately must be hard-coded so we can attribute it to the
-    # corresponding LDAP user.
-    uid = 1006;
-
     # TODO: Don't hard-code `persist`.  Use
     # config.sydnix.impermanence.persistGroupName.
-    extraGroups = [
-      # Admin account.
-      "wheel"
-      # Default permissions to modify /persist.
-      "persist"
-      # Can modify the files served by Nginx.
-      "nginx"
-      # Can modify Deertopia's git-annex repos.
-      "annex"
-      # Can modify Deertopia's Jellyfin libraries.
-      "jellyfin"
-      # Can access slskd's downloads.
-      "slskd"
-      # Can access Nixarr's media.
-      "media"
-      "www"
-    ];
-
+    extraGroups = [ "wheel" "persist" "input" ];
     initialHashedPassword =
-      "$y$j9T$aEFDDwdTZbAc6VQRXrkBJ0$K8wxTGTWDihyX1wxJ.ZMH//wmQFfrGGUkLkxIU0Lyq8";
+      "$y$j9T$4pyDiPlhnN4UarQoY7Sn70$URZQKPJ3yU4WoQFHRhzm4uF3bM4U7OVYem3oPioykMC";
 
     openssh.authorizedKeys.keyFiles = [
-      ../../public-keys/ssh/crumb-at-guix-rebound.pub
-      ../../public-keys/ssh/crumb-at-nixos-testbed.pub
-      ../../public-keys/ssh/termux.pub
     ];
   };
 
   homeConfiguration = { config, lib, pkgs, ... }: {
     home.file.".ssh/id_ed25519".source =
       config.lib.file.mkOutOfStoreSymlink
-        "/persist/private-keys/ssh/lain-at-deertopia";
+        "/persist/private-keys/ssh/crumb-at-nixos-testbed";
 
     home.file.".ssh/id_ed25519.pub".source =
-      ../../public-keys/ssh/lain-at-deertopia.pub;
+      ../../public-keys/ssh/crumb-at-nixos-testbed.pub;
 
-    programs.bash.enable = true;
+    # A few settings without a home:
+    xdg.enable = true;
+    home.preferXdgDirectories = true;
 
-    home.sessionVariables = {
-      "EDITOR" = "nvim";
-      "VISUAL" = "nvim";
-    };
+    home.packages = [];
 
-    home.packages = [
-      pkgs.btop
-    ];
+    fonts.fontconfig.enable = true;
 
     sydnix = {
-      impermanence = {
-        enable = true;
-        directories = [
-          ".ssh"
-          "public"
-        ];
+      xdg.enable = true;
+      # Personal configurations.
+      users.crumb = {
+        bash.enable = true;
+        direnv.enable = true;
+        git.enable = true;
+        nvim.enable = true;
+        readline.enable = true;
+      };
+      users.msyds = {
+        emacs.enable = true;
       };
-      users.crumb.git.enable = true;
-      users.crumb.nvim.enable = true;
     };
 
     # Don't touch!
diff --git a/users/msyds/files.nix b/users/msyds/files.nix
deleted file mode 100644
index 41c54c9..0000000
--- a/users/msyds/files.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-let mutableSymlink = config.lib.file.mkOutOfStoreSymlink;
-in {
-  home.file.".ssh/id_ed25519".source =
-    mutableSymlink "/persist/private-keys/ssh/lain-at-deertopia";
-  home.file.".ssh/id_ed25519.pub".source =
-    ../../public-keys/ssh/lain-at-deertopia.pub;
-}
diff --git a/users/msyds/secrets.yaml b/users/msyds/secrets.yaml
new file mode 100755
index 0000000..aee6b99
--- /dev/null
+++ b/users/msyds/secrets.yaml
@@ -0,0 +1,24 @@
+lastfm-password: ENC[AES256_GCM,data:gLcWwEFLhlVdMWez5Kaja17WFUA=,iv:KT9JO0823dn6qHnK2uOacMxHf4f776/soXFUVjUi1UA=,tag:n77bHc97yoKJPYvTCWhEuQ==,type:str]
+librefm-password: ENC[AES256_GCM,data:0gDlWC/2CxryI6jH5RuJ,iv:8QVnhLko3H/IupQrNknxTR8NewfTP+DJyzvHk9Hzr48=,tag:Ku02Jp7p5G5qkO41Y3EFwA==,type:str]
+github-oauth: ENC[AES256_GCM,data:t3FKFYu8edeBipC55nrG0lt1SCY8q1N5dZmvsCg7GLlVl4oDXW8FyQ==,iv:aewQ63H6c5wAw+YQRKbDT18Q05hSFsrdQBSYOUeVNeY=,tag:m1oCnSmLt+0rfcfSO4sOkQ==,type:str]
+gitlab-oauth: ENC[AES256_GCM,data:1THznoGRZmq7BkisZoGa0ZiPG7aSmkV06SY=,iv:Gq6UPHBBrnpkiAo4CZipc89kJ9mfJrwIp9NmUmjtKBo=,tag:UhvgCQlnkTEQ4hEbCTM6ow==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age1qayk0d0f765v57pedm7mtau6qkmv8rh6jtaqm40g5g9armaty4jqc0v0y2
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA2NE5mTER1OXpadmNzaXV6
+            b3RSbS9yWTN0NWR4Z2xBRnRSanQxYXdRT2drClVrSk1raXE4ZUVIVmxoMzJWU1Rj
+            VmxzdnVSUVEvQk1JcFo4Qjh6YWhiME0KLS0tIHh1OCtzSUZpWWhrbXB4SlA4RVBs
+            VVBqSEM2bVFBU0M5YzZBQWIwUmVXUXMKvWb57Rc+rO5M8Pf7lvbSjuZB4FrHgT3A
+            uBQHH3wpv0BVVzL8tucPnwNxDnwpWvFxxwNVy/rtfs6y6HPu6fuOsA==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2025-01-04T06:44:34Z"
+    mac: ENC[AES256_GCM,data:6zIMlRUHqX0yWVX8CWo69QtutuYshHuNGJ3N+PTpwe6qawwrAAEOMK9Xg4PDu7GZDRWu89UBq3SLOB9DpzOzj1sNoQeokNBvO2AyY+3iBcwBgzX8GeN/A7VK/HPv7g6CuEwnwjvhZLYH74UzmzfXraxMMdx0wldoQE7HD8Ya49M=,iv:QpRtoBUEAyLjeoj4+xtfEibMZj0vhfcMZON3q7LBMBQ=,tag:Dd+Lomo+rg6/fgBRudtIUg==,type:str]
+    pgp: []
+    unencrypted_suffix: _unencrypted
+    version: 3.9.1