fix(emacs): Explicitly set TRAMP host shell to Bash

Fixes hang during connection.

modules/home/users/crumb/emacs/modules/syd-tramp.el

@@ -5,6 +5,13 @@
         (file-name-concat syd-cache-dir "tramp"))
   (setq tramp-auto-save-directory
         (file-name-concat syd-cache-dir "tramp-autosave/"))
+  ;; TRAMP's default settings try to disable Readline, *rc files, profiles, etc.
+  ;; This is all very important and prevents unexpected behaviour and various
+  ;; hangs/crashes.  However, the default settings (`tramp-sh-extra-args') can
+  ;; only kick in when the shell is accurately identified — on my NixOS system,
+  ;; /bin/sh links to Bash.  Thus, the appropriate flags are never applied,
+  ;; unless we make the Bash of the matter explicit.
+  (setq tramp-encoding-shell (executable-find "bash"))
   (add-to-list 'tramp-remote-path 'tramp-own-remote-path))
 
 (provide 'syd-tramp)

modules/home/users/crumb/readline.nix

@@ -10,7 +10,7 @@ in {
     programs.readline = {
       enable = true;
       extraConfig = ''
-        # Unfortunately, the Vi mode is... bad!
+        # Unfortunately, the Vi mode is... bad.
         set editing-mode emacs
 
         # Mimmic Comint/Eshell binds.